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Synapse

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607:. The stability of long-term memory can persist for many years; nevertheless, synapses, the neurological basis of memory, are very dynamic. The formation of synaptic connections significantly depends on activity-dependent synaptic plasticity observed in various synaptic pathways. Indeed, the connection between memory formation and alterations in synaptic efficacy enables the reinforcement of neuronal interactions between neurons. As neurotransmitters activate receptors across the synaptic cleft, the connection between the two neurons is strengthened when both neurons are active at the same time, as a result of the receptor's signaling mechanisms. The strength of two connected neural pathways is thought to result in the storage of information, resulting in memory. This process of synaptic strengthening is known as 699:
diseases, synaptopathy is thought to be the inevitable end-result of an ongoing pathophysiological cascade. These diseases are identified by a gradual loss in cognitive and behavioral function and a steady loss of brain tissue. Moreover, these deteriorations have been mostly linked to the gradual build-up of protein aggregates in neurons, the composition of which may vary based on the pathology; all have the same deleterious effects on neuronal integrity. Furthermore, the high number of mutations linked to synaptic structure and function, as well as dendritic spine alterations in post-mortem tissue, has led to the association between synaptic defects and neurodevelopmental disorders, such as ASD and SCZ, characterized by abnormal behavioral or cognitive phenotypes.
319:. Opening Cl- channels tends to buffer the membrane potential, but this effect is countered when the membrane starts to depolarize, allowing more negatively charged Cl- ions to enter the cell. Consequently, it becomes more difficult to depolarize the membrane and excite the cell when Cl- channels are open. Similar effects result from the opening of K+ channels. The significance of inhibitory neurotransmitters is evident from the effects of toxins that impede their activity. For instance, strychnine binds to glycine receptors, blocking the action of glycine and leading to muscle spasms, convulsions, and death. 304:
reducing firing. Depending on their release location, the receptors they bind to, and the ionic circumstances they encounter, various transmitters can be either excitatory or inhibitory. For instance, acetylcholine can either excite or inhibit depending on the type of receptors it binds to. For example, glutamate serves as an excitatory neurotransmitter, in contrast to GABA, which acts as an inhibitory neurotransmitter. Additionally, dopamine is a neurotransmitter that exerts dual effects, displaying both excitatory and inhibitory impacts through binding to distinct receptors.
755: 99:. Synapses (at least chemical synapses) are stabilized in position by synaptic adhesion molecules (SAMs) projecting from both the pre- and post-synaptic neuron and sticking together where they overlap; SAMs may also assist in the generation and functioning of synapses. Moreover, SAMs coordinate the formation of synapses, with various types working together to achieve the remarkable specificity of synapses. In essence, SAMs function in both excitatory and inhibitory synapses, likely serving as devices for signal transmission. 715: 343: 731: 190: 360:
molecule binding, causing a momentary alteration in the membrane's permeability. Additionally, transmitter-gated channels are comparatively less sensitive to the membrane potential than voltage-gated channels, which is why they are unable to generate self-amplifying excitement on their own. However, they result in graded variations in membrane potential due to local permeability, influenced by the amount and duration of neurotransmitter released at the synapse.
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an electrical alteration in the postsynaptic cell and rapidly diffuses across the synaptic cleft. Once released, the neurotransmitter is swiftly eliminated, either by being absorbed by the nerve terminal that produced it, taken up by nearby glial cells, or broken down by specific enzymes in the synaptic cleft. Numerous Na+-dependent neurotransmitter carrier proteins recycle the neurotransmitters and enable the cells to maintain rapid rates of release.
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to environmental biochemical processes can lead to synaptic dysfunction. The synapse is the primary unit of information transfer in the nervous system, and correct synaptic contact creation during development is essential for normal brain function. In addition, several mutations have been connected to neurodevelopmental disorders, and that compromised function at different synapse locations is a hallmark of neurodegenerative diseases.
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that are capable of passing an electric current, causing voltage changes in the presynaptic cell to induce voltage changes in the postsynaptic cell. In fact, gap junctions facilitate the direct flow of electrical current without the need for neurotransmitters, as well as small molecules like calcium.
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Synapses are essential to the transmission of nervous impulses from one neuron to another, playing a key role in enabling rapid and direct communication by creating circuits. In addition, a synapse serves as a junction where both the transmission and processing of information occur, making it a vital
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Nevertheless, due to limited access to human tissue at late stages and a lack of thorough assessment of the essential components of human diseases in the available experimental animal models, it has been difficult to fully grasp the origin and role of synaptic dysfunction in neurological disorders.
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Synaptic defects are causally associated with early appearing neurological diseases, including autism spectrum disorders (ASD), schizophrenia (SCZ), and bipolar disorder (BP). On the other hand, in late-onset degenerative pathologies, such as Alzheimer's (AD), Parkinson's (PD), and Huntington's (HD)
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Synapses function as ensembles within particular brain networks to control the amount of neuronal activity, which is essential for memory, learning, and behavior. Consequently, synaptic disruptions might have negative effects. In fact, alterations in cell-intrinsic molecular systems or modifications
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Moreover, Ca2+/calmodulin (CaM)-dependent protein kinase II (CaMKII) is best recognized for its roles in the brain, particularly in the neocortex and hippocampal regions because it serves as a ubiquitous mediator of cellular Ca2+ signals. CaMKII is abundant in the nervous system, mainly concentrated
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In nerve terminals, synaptic vesicles are produced quickly to compensate for their rapid depletion during neurotransmitter release. Their biogenesis involves segregating synaptic vesicle membrane proteins from other cellular proteins and packaging those distinct proteins into vesicles of appropriate
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At chemical synapses, transmitter-gated ion channels play a vital role in rapidly converting extracellular chemical impulses into electrical signals. These channels are located in the postsynaptic cell's plasma membrane at the synapse region, and they temporarily open in response to neurotransmitter
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Neurotransmitters are tiny signal molecules stored in membrane-enclosed synaptic vesicles and released via exocytosis. Indeed, a change in electrical potential in the presynaptic cell triggers the release of these molecules. By attaching to transmitter-gated ion channels, the neurotransmitter causes
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Drugs have long been considered crucial targets for transmitter-gated ion channels. The majority of medications utilized to treat schizophrenia, anxiety, depression, and sleeplessness work at chemical synapses, and many of these pharmaceuticals function by binding to transmitter-gated channels. For
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Synapses can be classified by the type of cellular structures serving as the pre- and post-synaptic components. The vast majority of synapses in the mammalian nervous system are classical axo-dendritic synapses (axon synapsing upon a dendrite), however, a variety of other arrangements exist. These
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However, while the synaptic gap remained a theoretical construct, and was sometimes reported as a discontinuity between contiguous axonal terminations and dendrites or cell bodies, histological methods using the best light microscopes of the day could not visually resolve their separation which is
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While Ca2+/CaM binding stimulates CaMKII activity, Ca2+-independent autonomous CaMKII activity can also be produced by a number of other processes. CaMKII becomes active by autophosphorylating itself upon Ca2+/calmodulin binding. CaMKII is still active and phosphorylates itself even after Ca2+ is
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to travel directionally (from dendrites to cell body down the axon), and for these signals to then be received and carried on by post-synaptic neurons or received by effector cells. Nerve cells have long been used as models for cellular polarization, and of particular interest are the mechanisms
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process, in which these compounds are synthesized in and released from postsynaptic neuronal elements and travel back to the presynaptic terminal to act on the CB1 receptor for short-term or long-term synaptic depression, that causes a short or long lasting decrease in neurotransmitter release.
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An influx of Na+ driven by excitatory neurotransmitters opens cation channels, depolarizing the postsynaptic membrane toward the action potential threshold. In contrast, inhibitory neurotransmitters cause the postsynaptic membrane to become less depolarized by opening either Cl- or K+ channels,
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Neurotransmitters bind to ionotropic receptors on postsynaptic neurons, either causing their opening or closing. The variations in the quantities of neurotransmitters released from the presynaptic neuron may play a role in regulating the effectiveness of synaptic transmission. In fact, the
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Furthermore, psychoactive drugs could potentially target many other synaptic signalling machinery components. In fact, numerous neurotransmitters are released by Na+-driven carriers and are subsequently removed from the synaptic cleft. By inhibiting such carriers, synaptic transmission is
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strengthened as the action of the transmitter is prolonged. For example, Prozac is an antidepressant medication that works by preventing the absorption of serotonin neurotransmitter. Also, other antidepressants operate by inhibiting the reabsorption of both serotonin and norepinephrine.
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cleaved; as a result, the brain stores long-term memories using this mechanism. Nevertheless, when the CaMKII enzyme is dephosphorylated by a phosphatase enzyme, it becomes inactive, and memories are lost. Hence, CaMKII plays a vital role in both the induction and maintenance of LTP.
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located in the plasma membrane of the postsynaptic cell. The neurotransmitter may initiate an electrical response or a secondary messenger pathway that may either excite or inhibit the postsynaptic neuron. Chemical synapses can be classified according to the neurotransmitter released:
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in the synapses in the nerve cells. Indeed, CaMKII has been definitively identified as a key regulator of cognitive processes, such as learning, and neural plasticity. The first concrete experimental evidence for the long-assumed function of CaMKII in memory storage was demonstrated
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By altering the release of neurotransmitters, the plasticity of synapses can be controlled in the presynaptic cell. The postsynaptic cell can be regulated by altering the function and number of its receptors. Changes in postsynaptic signaling are most commonly associated with a
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The formation of neural circuits in nervous systems appears to heavily depend on the crucial interactions between chemical and electrical synapses. Thus these interactions govern the generation of synaptic transmission. Synaptic communication is distinct from an
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now known to be about 20 nm. It needed the electron microscope in the 1950s to show the finer structure of the synapse with its separate, parallel pre- and postsynaptic membranes and processes, and the cleft between the two.
584:, which conceptualizes Alzheimer's as an imbalance between these processes. As of October 2023, studies concerning this protocol remain small and few results have been obtained within a standardized control framework. 460:
genes demonstrated behavioral and localization defects, which were rescued by expression of IMPase. This led to the conclusion that IMPase is required for the correct localization of synaptic protein components. The
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instance, some drugs like barbiturates and tranquilizers bind to GABA receptors and enhance the inhibitory effect of GABA neurotransmitter. Thus, reduced concentration of GABA enables the opening of Cl- channels.
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Mixed chemical electrical synapses are synaptic sites that feature both a gap junction and neurotransmitter release. This combination allows a signal to have both a fast component (electrical) and a slow component
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In fact, the axon can synapse onto a dendrite, onto a cell body, or onto another axon or axon terminal, as well as into the bloodstream or diffusely into the adjacent nervous tissue.
501:. The activation of GPCRs located at the presynaptic terminal, can decrease the probability of neurotransmitter release. This presynaptic depression involves activation of 1646: 363:
Recently, mechanical tension, a phenomenon never thought relevant to synapse function has been found to be required for those on hippocampal neurons to fire.
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means of communication between neurons. Neurons are specialized to pass signals to individual target cells, and synapses are the means by which they do so.
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gene were largely reversed. These results suggest that PIP2 signaling establishes polarized localization of synaptic components in living neurons.
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refer to synapse-producing and synapse-removing activities within the biochemical signalling chain. This terminology is associated with the
754: 623:(LTD) due to the influx of calcium into the post-synaptic cell, which are the most analyzed forms of plasticity at excitatory synapses. 428: 2407: 299:
Inhibitory synapse: Diminishes the probability of depolarization in postsynaptic neurons and the initiation of an action potential.
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that link the two membranes together and carry out the signaling process. In many synapses, the presynaptic part is located on an
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Excitatory synapse: Enhances the probability of depolarization in postsynaptic neurons and the initiation of an action potential.
1970:"Inositol monophosphatase regulates localization of synaptic components and behavior in the mature nervous system of C. elegans" 1531:
Sotelo C, Palay SL (February 1970). "The fine structure of the later vestibular nucleus in the rat. II. Synaptic organization".
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Perea G, Navarrete M, Araque A (August 2009). "Tripartite synapses: astrocytes process and control synaptic information".
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concentration of cytoplasmic calcium is involved in regulating the release of neurotransmitters from presynaptic neurons.
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proposed that neurons are not continuous throughout the body, yet still communicate with each other, an idea known as the
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is a chemical or electrical synapse that forms when the axon of one neuron synapses onto dendrites of the same neuron.
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Stanley EF (1992). "The calyx-type synapse of the chick ciliary ganglion as a model of fast cholinergic transmission".
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also exchange information with the synaptic neurons, responding to synaptic activity and, in turn, regulating
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Thus, the main advantage of an electrical synapse is the rapid transfer of signals from one cell to the next.
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size. Besides, it entails the endocytosis of synaptic vesicle membrane proteins from the plasma membrane.
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Strausfeld NJ, Bassemir UK (December 1983). "Cobalt-coupled neurons of a giant fibre system in Diptera".
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For technical reasons, synaptic structure and function have been historically studied at unusually large
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prevents Cl- from entering the cell, even when its concentration is much higher outside than inside. The
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Joy MS, Nall DL, Emon B, Lee KY, Barishman A, Ahmed M, Rahman S, Selvin PR, Saif MT (2023-12-26).
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Lovinger DM (2008). "Presynaptic Modulation by Endocannabinoids". In Südhof TC, Starke K (eds.).
532: 333: 235: 131: 3133: 2660: 2424: 657: 608: 581: 437: 243: 1666:"A serotonergic axon-cilium synapse drives nuclear signaling to alter chromatin accessibility" 2991: 2981: 2916: 2207: 792: 336:, axo-secretory, axo-ciliary, somato-dendritic, dendro-somatic, and somato-somatic synapses. 3116: 3013: 2943: 2769: 2624: 1758: 1026: 807: 620: 540: 265:, the presynaptic and postsynaptic cell membranes are connected by special channels called 524: 8: 3156: 3001: 2996: 2531: 2464: 678: 652: 255: 247: 1787: 1762: 1746: 1030: 3191: 3161: 3092: 3061: 3051: 3046: 3041: 2986: 2762: 2672: 2526: 2367: 2334: 2275: 2250: 2226: 2195: 2096: 2063: 1998: 1969: 1945: 1916: 1705: 1692: 1665: 1591: 1475: 1450: 1375: 1350: 1326: 1301: 1277: 1252: 1168: 1047: 1014: 990: 965: 941: 916: 892: 453: 329: 312: 308: 262: 130:
elements, and the actual term "synapse" was suggested by the English classical scholar
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Sheu SH, Upadhyayula S, Dupuy V, Pang S, Deng F, Wan J, et al. (September 2022).
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The word synapse first appeared in 1897, in the seventh edition of Michael Foster's
1172: 896: 217:, electrical activity in the presynaptic neuron is converted (via the activation of 3143: 3106: 3101: 2449: 2362: 2346: 2307: 2270: 2262: 2221: 2211: 2179: 2174: 2162: 2135: 2091: 2075: 2026: 1993: 1985: 1940: 1932: 1884: 1819: 1782: 1766: 1687: 1677: 1575: 1540: 1470: 1462: 1370: 1362: 1321: 1313: 1272: 1264: 1152: 1042: 1034: 985: 977: 936: 928: 876: 502: 490: 405: 222: 214: 194: 1253:"Some features of the submicroscopic morphology of synapses in frog and earthworm" 1139:
Tansey EM (1997). "Not committing barbarisms: Sherrington and the synapse, 1897".
283:, in which communication between neurons occurs via indirect electric fields. An 2911: 2880: 2875: 2757: 2752: 2576: 2266: 2030: 1889: 1872: 1238: 466: 111: 60: 1936: 981: 126:. Sherrington struggled to find a good term that emphasized a union between two 75:) cell. Both the presynaptic and postsynaptic sites contain extensive arrays of 3201: 3171: 3128: 2948: 2906: 2884: 2804: 2687: 2511: 2416: 2139: 1846: 1682: 1617: 1499: 1019:
Proceedings of the National Academy of Sciences of the United States of America
880: 672: 645: 593: 518: 251: 88: 49: 37: 2163:"Changes of synaptic structures associated with learning, memory and diseases" 1451:"Electrical synapses and their functional interactions with chemical synapses" 3220: 2850: 2835: 2516: 2358: 2216: 2087: 1778: 1224: 666: 401: 231: 202: 198: 135: 114:. The word "synapse" was introduced in 1897 by the English neurophysiologist 1770: 1432: 1101: 1038: 603:
It is widely accepted that the synapse plays a key role in the formation of
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located at the presynaptic terminal, are involved in this modulation by a
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This article is about synapses of the nervous system. For other uses, see
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Chemical and electrical synapses are two ways of synaptic transmission.
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that mediate different inhibitory mechanisms, including inhibition of
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Controlling the release of neurotransmitters into the synaptic cleft.
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Alberts B, Johnson A, Lewis J, Raff M, Roberts K, Walter P (2002).
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The chemical transmission involves several sequential processes:
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for Cl- in many neurons is quite negative, nearly equal to the
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Basic Neurochemistry: Molecular, Cellular and Medical Aspects
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underlying the polarized localization of synaptic molecules.
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Synthesizing neurotransmitters within the presynaptic neuron.
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Taoufik E, Kouroupi G, Zygogianni O, Matsas R (2018-09-05).
2061: 445:-inositol monophosphatase (IMPase), an enzyme that produces 2822: 616: 80: 1015:"Engineered adhesion molecules drive synapse organization" 2194:
Krugers HJ, Zhou M, Joëls M, Kindt M (October 11, 2011).
1967: 1738: 1618:"Ion Channels and the Electrical Properties of Membranes" 1663: 1615: 391:
Ceasing the activity of the released neurotransmitters.
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Binding of neurotransmitters to postsynaptic receptors.
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Neuropsychology: Clinical and Experimental Foundations
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Loading the neurotransmitters into secretory vesicles.
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Pitman RM (September 1984). "The versatile synapse".
963: 147:), meaning "conjunction", which in turn derives from 862: 134:, a friend of Foster. The word was derived from the 1910: 1908: 1497: 1396: 1394: 1355:
The Journal of Biophysical and Biochemical Cytology
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The Journal of Biophysical and Biochemical Cytology
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The Journal of Biophysical and Biochemical Cytology
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When 290: 1559: 1530: 1524: 1439: 1400: 1299: 1251:De Robertis ED, Bennett HS (January 1955). 2408: 2394: 2064:"Biogenesis of synaptic vesicles in vitro" 1844: 970:Cold Spring Harbor Perspectives in Biology 903: 825: 221:) into the release of a chemical called a 83:and the postsynaptic part is located on a 32:Diagram of a chemical synaptic connection. 2366: 2274: 2225: 2215: 2178: 2160: 2095: 1997: 1944: 1888: 1786: 1691: 1681: 1474: 1374: 1325: 1276: 1046: 989: 940: 853: 484: 254:). 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San Francisco: 1342: 1302:"The fine structure of neurons" 1293: 1244: 517:, and direct inhibition of the 328:include but are not limited to 2180:10.26599/BSA.2018.2018.9050012 1186: 1132: 1063: 1006: 957: 511:voltage-gated calcium channels 219:voltage-gated calcium channels 44:is a structure that permits a 1: 1622:Molecular Biology of the Cell 1157:10.1016/S0361-9230(97)00312-2 1070:Elias LJ, Saucier DM (2006). 819: 783:Cooperative synapse formation 560: 322: 2267:10.1016/j.neuron.2019.05.033 2031:10.1007/978-3-540-74805-2_14 1890:10.1016/j.neuron.2005.11.007 1545:10.1016/0006-8993(70)90459-2 1455:Nature Reviews. Neuroscience 609:long-term potentiation (LTP) 367:Release of neurotransmitters 7: 2682:Postganglionic nerve fibers 2068:The Journal of Cell Biology 1937:10.1534/genetics.111.137844 1929:Genetics Society of America 1845:Holz RW, Fisher SK (1999). 1645:Lasica A, Brewer C (2023). 1125:Online Etymology Dictionary 982:10.1101/cshperspect.a005694 921:The Journal of Cell Biology 765: 627:Mechanism of protein kinase 599:Potentiation and depression 531:elements and their cognate 495:G-protein-coupled receptors 346:Different types of synapses 10: 3248: 2677:Preganglionic nerve fibers 2140:10.1152/physrev.00014.2003 1883:(6). Cell Press: 881–884. 1716:University press release: 1683:10.1016/j.cell.2022.07.026 1218: 1210: 1202: 1194: 881:10.1016/j.tins.2009.05.001 591: 473:mutants also had a mutant 465:gene encodes a homolog of 173: 163: 153: 143: 102: 18: 3187:Olfactory receptor neuron 3142: 3083: 3076: 3012: 2942: 2899: 2859: 2851:Neurofibril/neurofilament 2821: 2803: 2796: 2782: 2729: 2701: 2607: 2598: 2545: 2502: 2495: 2432: 2423: 2122:Lynch MA (January 2004). 1407:Pearson/Benjamin Cummings 1076:Pearson/Allyn & Bacon 291:Excitatory and inhibitory 67:neuron) comes into close 2217:10.3389/fnbeh.2011.00062 1568:Journal of Neurocytology 1449:Pereda AE (April 2014). 966:"Synaptic cell adhesion" 798:Neurotransmitter vesicle 617:N-methyl-d-aspartic acid 456:. Organisms with mutant 184: 21:Synapse (disambiguation) 1974:Genes & Development 1847:"Synaptic Transmission" 1771:10.1073/pnas.2311995120 1401:Silverthorn DU (2007). 1234:A Greek–English Lexicon 1141:Brain Research Bulletin 1039:10.1073/pnas.2215905120 915:Südhof TC (July 2021). 865:Trends in Neurosciences 724:for interactive version 648:synapses, for example: 535:, including the (GPCR) 413:signaling regulated by 132:Arthur Woollgar Verrall 3134:Neuromuscular junction 2997:III or Aδ or fast pain 2167:Brain Science Advances 2080:10.1083/jcb.130.5.1041 1349:Palay SL (July 1956). 1179:Textbook of Physiology 837:Textbook of Physiology 658:Neuromuscular junction 485:Presynaptic modulation 438:Caenorhabditis elegans 347: 244:neuromuscular junction 206: 124:Textbook of Physiology 108:Santiago Ramón y Cajal 33: 2128:Physiological Reviews 1824:10.1242/jeb.112.1.199 1676:(18): 3390–3407.e18. 1500:"Physiology, Synapse" 1225:Liddell, Henry George 933:10.1083/jcb.202103052 793:Immunological synapse 690:Synapses and Diseases 499:synaptic transmission 396:Synaptic polarization 345: 192: 31: 3152:Meissner's corpuscle 3117:Postsynaptic density 3014:Efferent nerve fiber 3002:IV or C or slow pain 2944:Afferent nerve fiber 2770:Satellite glial cell 1361:(4 Suppl): 193–202. 808:Postsynaptic density 621:long-term depression 541:retrograde signaling 435:) was identified in 238:(often inhibitory), 234:(often excitatory), 3227:Signal transduction 3157:Merkel nerve ending 2351:10.1098/rsob.180138 1990:10.1101/gad.1497806 1763:2023PNAS..12011995J 1757:(52): e2311995120. 1367:10.1083/jcb.2.4.193 1031:2023PNAS..12015905H 679:Schaffer collateral 653:Squid giant synapse 640:Experimental models 582:Alzheimer's disease 256:signal transduction 116:Charles Sherrington 77:molecular machinery 3192:Photoreceptor cell 3162:Pacinian corpuscle 3093:Electrical synapse 3047:Lower motor neuron 3042:Upper motor neuron 2763:Internodal segment 2703:Connective tissues 2673:Autonomic ganglion 2306:(Suppl): S73–S77. 2208:Frontiers Media SA 1580:10.1007/BF01153345 1318:10.1083/jcb.1.1.69 1269:10.1083/jcb.1.1.47 1025:(3): e2215905120. 515:potassium channels 454:inositol phosphate 348: 313:reversal potential 309:membrane potential 263:electrical synapse 207: 59:At a synapse, the 34: 3214: 3213: 3210: 3209: 3177:Free nerve ending 3144:Sensory receptors 3072: 3071: 2987:Ib or Golgi or Aα 2895: 2894: 2778: 2777: 2655:Ramus communicans 2594: 2593: 2590: 2589: 2460:Commissural fiber 2455:Association fiber 2450:Projection fibers 1651:TeachMePhysiology 1416:978-0-8053-6851-2 927:(7): e202103052. 846:978-1-4325-1085-5 707:Additional images 578:Bredesen Protocol 451:dephosphorylating 421:Phosphoinositides 406:action potentials 317:resting potential 281:ephaptic coupling 242:(e.g. vertebrate 195:neurotransmitters 167:) "together" and 97:neurotransmission 3239: 3107:Synaptic vesicle 3102:Chemical synapse 3081: 3080: 2801: 2800: 2794: 2793: 2605: 2604: 2500: 2499: 2430: 2429: 2410: 2403: 2396: 2387: 2386: 2381: 2380: 2370: 2330: 2324: 2323: 2295: 2289: 2288: 2278: 2246: 2240: 2239: 2229: 2219: 2191: 2185: 2184: 2182: 2158: 2152: 2151: 2119: 2110: 2109: 2099: 2074:(5): 1041–1049. 2059: 2053: 2052: 2018: 2012: 2011: 2001: 1965: 1959: 1958: 1948: 1912: 1903: 1902: 1892: 1868: 1862: 1861: 1859: 1858: 1842: 1836: 1835: 1807: 1801: 1800: 1790: 1742: 1736: 1733: 1731: 1729: 1713: 1695: 1685: 1661: 1655: 1654: 1642: 1633: 1632: 1630: 1629: 1613: 1600: 1599: 1563: 1557: 1556: 1528: 1522: 1521: 1519: 1518: 1495: 1489: 1488: 1478: 1446: 1437: 1436: 1398: 1389: 1388: 1378: 1346: 1340: 1339: 1329: 1297: 1291: 1290: 1280: 1248: 1242: 1221: 1220: 1213: 1212: 1205: 1204: 1197: 1196: 1190: 1184: 1183: 1136: 1130: 1129: 1115: 1106: 1105: 1085:978-0-20534361-4 1067: 1061: 1060: 1050: 1010: 1004: 1003: 993: 961: 955: 954: 944: 912: 901: 900: 860: 851: 850: 832: 757: 745: 733: 717: 681:synapses in the 669:in the brainstem 525:Endocannabinoids 513:, activation of 491:neurotransmitter 334:dendro-dendritic 223:neurotransmitter 215:chemical synapse 176: 175: 166: 165: 156: 155: 146: 145: 3247: 3246: 3242: 3241: 3240: 3238: 3237: 3236: 3217: 3216: 3215: 3206: 3138: 3068: 3017: 3008: 2992:II or Aβ and Aγ 2947: 2938: 2891: 2881:Apical dendrite 2876:Dendritic spine 2855: 2817: 2787: 2774: 2758:Node of Ranvier 2753:Myelin incisure 2725: 2697: 2586: 2577:Oligodendrocyte 2560:Ependymal cells 2541: 2491: 2419: 2414: 2384: 2331: 2327: 2312:10.1139/y92-246 2296: 2292: 2247: 2243: 2192: 2188: 2159: 2155: 2120: 2113: 2060: 2056: 2041: 2019: 2015: 1966: 1962: 1913: 1906: 1869: 1865: 1856: 1854: 1843: 1839: 1808: 1804: 1743: 1739: 1727: 1725: 1717: 1662: 1658: 1643: 1636: 1627: 1625: 1614: 1603: 1564: 1560: 1529: 1525: 1516: 1514: 1496: 1492: 1467:10.1038/nrn3708 1447: 1440: 1417: 1409:. p. 271. 1399: 1392: 1347: 1343: 1298: 1294: 1249: 1245: 1239:Perseus Project 1191: 1187: 1137: 1133: 1116: 1109: 1086: 1068: 1064: 1011: 1007: 962: 958: 913: 904: 861: 854: 847: 833: 826: 822: 817: 768: 761: 758: 749: 746: 737: 734: 725: 718: 709: 692: 642: 629: 601: 596: 590: 563: 550: 487: 467:phospholipase C 398: 369: 353: 325: 293: 187: 177:) "to fasten". 112:neuron doctrine 105: 61:plasma membrane 24: 17: 12: 11: 5: 3245: 3235: 3234: 3232:Neural synapse 3229: 3212: 3211: 3208: 3207: 3205: 3204: 3202:Taste receptor 3199: 3194: 3189: 3184: 3179: 3174: 3172:Muscle spindle 3169: 3167:Ruffini ending 3164: 3159: 3154: 3148: 3146: 3140: 3139: 3137: 3136: 3131: 3129:Ribbon synapse 3126: 3121: 3120: 3119: 3114: 3109: 3099: 3089: 3087: 3078: 3074: 3073: 3070: 3069: 3067: 3066: 3065: 3064: 3059: 3054: 3044: 3039: 3034: 3029: 3023: 3021: 3010: 3009: 3007: 3006: 3005: 3004: 2999: 2994: 2989: 2984: 2974: 2969: 2964: 2959: 2953: 2951: 2949:Sensory neuron 2940: 2939: 2937: 2936: 2935: 2934: 2924: 2919: 2917:Pseudounipolar 2914: 2909: 2903: 2901: 2897: 2896: 2893: 2892: 2890: 2889: 2888: 2887: 2885:Basal dendrite 2878: 2873: 2865: 2863: 2857: 2856: 2854: 2853: 2848: 2843: 2838: 2836:Axon terminals 2833: 2827: 2825: 2819: 2818: 2816: 2815: 2809: 2807: 2798: 2791: 2780: 2779: 2776: 2775: 2773: 2772: 2767: 2766: 2765: 2760: 2755: 2750: 2735: 2733: 2727: 2726: 2724: 2723: 2718: 2713: 2707: 2705: 2699: 2698: 2696: 2695: 2690: 2688:Nerve fascicle 2685: 2679: 2670: 2669: 2668: 2663: 2651: 2650: 2649: 2644: 2634: 2633: 2632: 2627: 2622: 2611: 2609: 2602: 2596: 2595: 2592: 2591: 2588: 2587: 2585: 2584: 2579: 2574: 2569: 2568: 2567: 2557: 2551: 2549: 2543: 2542: 2540: 2539: 2534: 2529: 2524: 2519: 2514: 2508: 2506: 2497: 2493: 2492: 2490: 2489: 2484: 2479: 2478: 2477: 2472: 2467: 2462: 2457: 2452: 2442: 2436: 2434: 2427: 2421: 2420: 2417:Nervous tissue 2413: 2412: 2405: 2398: 2390: 2383: 2382: 2325: 2290: 2261:(3): 380–394. 2241: 2186: 2153: 2111: 2054: 2039: 2013: 1960: 1904: 1863: 1837: 1818:(1): 199–224. 1802: 1737: 1735: 1734: 1656: 1634: 1601: 1558: 1533:Brain Research 1523: 1490: 1461:(4): 250–263. 1438: 1415: 1390: 1341: 1292: 1243: 1185: 1131: 1107: 1084: 1062: 1005: 976:(4): a005694. 956: 902: 852: 845: 823: 821: 818: 816: 815: 810: 805: 800: 795: 790: 785: 780: 775: 769: 767: 764: 763: 762: 759: 752: 750: 747: 740: 738: 735: 728: 726: 719: 712: 708: 705: 691: 688: 687: 686: 676: 673:Ribbon synapse 670: 664: 661: 655: 641: 638: 628: 625: 600: 597: 594:Hebbian theory 592:Main article: 589: 588:Role in memory 586: 574:synaptoclastic 570:Synaptoblastic 562: 559: 549: 546: 519:vesicle fusion 489:Modulation of 486: 483: 397: 394: 393: 392: 389: 386: 383: 380: 368: 365: 352: 349: 324: 321: 301: 300: 297: 292: 289: 276: 275: 271: 259: 252:norepinephrine 225:that binds to 186: 183: 120:Michael Foster 104: 101: 38:nervous system 15: 9: 6: 4: 3: 2: 3244: 3233: 3230: 3228: 3225: 3224: 3222: 3203: 3200: 3198: 3195: 3193: 3190: 3188: 3185: 3183: 3180: 3178: 3175: 3173: 3170: 3168: 3165: 3163: 3160: 3158: 3155: 3153: 3150: 3149: 3147: 3145: 3141: 3135: 3132: 3130: 3127: 3125: 3122: 3118: 3115: 3113: 3110: 3108: 3105: 3104: 3103: 3100: 3098: 3094: 3091: 3090: 3088: 3086: 3082: 3079: 3075: 3063: 3062:γ motorneuron 3060: 3058: 3057:β motorneuron 3055: 3053: 3052:α motorneuron 3050: 3049: 3048: 3045: 3043: 3040: 3038: 3035: 3033: 3030: 3028: 3025: 3024: 3022: 3020: 3015: 3011: 3003: 3000: 2998: 2995: 2993: 2990: 2988: 2985: 2983: 2980: 2979: 2978: 2975: 2973: 2970: 2968: 2965: 2963: 2960: 2958: 2955: 2954: 2952: 2950: 2945: 2941: 2933: 2930: 2929: 2928: 2925: 2923: 2920: 2918: 2915: 2913: 2910: 2908: 2905: 2904: 2902: 2898: 2886: 2882: 2879: 2877: 2874: 2872: 2869: 2868: 2867: 2866: 2864: 2862: 2858: 2852: 2849: 2847: 2844: 2842: 2839: 2837: 2834: 2832: 2829: 2828: 2826: 2824: 2820: 2814: 2811: 2810: 2808: 2806: 2802: 2799: 2795: 2792: 2790: 2785: 2781: 2771: 2768: 2764: 2761: 2759: 2756: 2754: 2751: 2749: 2746: 2745: 2744: 2740: 2737: 2736: 2734: 2732: 2728: 2722: 2719: 2717: 2714: 2712: 2709: 2708: 2706: 2704: 2700: 2694: 2691: 2689: 2686: 2683: 2680: 2678: 2674: 2671: 2667: 2664: 2662: 2659: 2658: 2657: 2656: 2652: 2648: 2645: 2643: 2640: 2639: 2638: 2635: 2631: 2628: 2626: 2623: 2621: 2618: 2617: 2616: 2613: 2612: 2610: 2606: 2603: 2601: 2597: 2583: 2580: 2578: 2575: 2573: 2570: 2566: 2563: 2562: 2561: 2558: 2556: 2553: 2552: 2550: 2548: 2544: 2538: 2535: 2533: 2530: 2528: 2525: 2523: 2520: 2518: 2515: 2513: 2510: 2509: 2507: 2505: 2501: 2498: 2494: 2488: 2485: 2483: 2480: 2476: 2473: 2471: 2468: 2466: 2463: 2461: 2458: 2456: 2453: 2451: 2448: 2447: 2446: 2443: 2441: 2438: 2437: 2435: 2431: 2428: 2426: 2422: 2418: 2411: 2406: 2404: 2399: 2397: 2392: 2391: 2388: 2378: 2374: 2369: 2364: 2360: 2356: 2352: 2348: 2345:(9): 180138. 2344: 2340: 2336: 2329: 2321: 2317: 2313: 2309: 2305: 2301: 2294: 2286: 2282: 2277: 2272: 2268: 2264: 2260: 2256: 2252: 2245: 2237: 2233: 2228: 2223: 2218: 2213: 2209: 2205: 2201: 2197: 2190: 2181: 2176: 2173:(2): 99–117. 2172: 2168: 2164: 2157: 2149: 2145: 2141: 2137: 2134:(1): 87–136. 2133: 2129: 2125: 2118: 2116: 2107: 2103: 2098: 2093: 2089: 2085: 2081: 2077: 2073: 2069: 2065: 2058: 2050: 2046: 2042: 2040:9783540748052 2036: 2032: 2028: 2024: 2017: 2009: 2005: 2000: 1995: 1991: 1987: 1984:: 3296–3310. 1983: 1979: 1975: 1971: 1964: 1956: 1952: 1947: 1942: 1938: 1934: 1930: 1926: 1922: 1918: 1911: 1909: 1900: 1896: 1891: 1886: 1882: 1878: 1874: 1867: 1852: 1848: 1841: 1833: 1829: 1825: 1821: 1817: 1813: 1806: 1798: 1794: 1789: 1784: 1780: 1776: 1772: 1768: 1764: 1760: 1756: 1752: 1748: 1741: 1724: 1720: 1715: 1714: 1711: 1707: 1703: 1699: 1694: 1689: 1684: 1679: 1675: 1671: 1667: 1660: 1652: 1648: 1641: 1639: 1623: 1619: 1612: 1610: 1608: 1606: 1597: 1593: 1589: 1585: 1581: 1577: 1574:(6): 971–91. 1573: 1569: 1562: 1554: 1550: 1546: 1542: 1539:(1): 93–115. 1538: 1534: 1527: 1513: 1509: 1505: 1501: 1494: 1486: 1482: 1477: 1472: 1468: 1464: 1460: 1456: 1452: 1445: 1443: 1434: 1430: 1426: 1422: 1418: 1412: 1408: 1404: 1397: 1395: 1386: 1382: 1377: 1372: 1368: 1364: 1360: 1356: 1352: 1345: 1337: 1333: 1328: 1323: 1319: 1315: 1311: 1307: 1303: 1296: 1288: 1284: 1279: 1274: 1270: 1266: 1262: 1258: 1254: 1247: 1240: 1236: 1235: 1230: 1229:Scott, Robert 1226: 1222: 1214: 1206: 1198: 1189: 1182: 1180: 1174: 1170: 1166: 1162: 1158: 1154: 1150: 1146: 1142: 1135: 1127: 1126: 1121: 1114: 1112: 1103: 1099: 1095: 1091: 1087: 1081: 1077: 1073: 1066: 1058: 1054: 1049: 1044: 1040: 1036: 1032: 1028: 1024: 1020: 1016: 1009: 1001: 997: 992: 987: 983: 979: 975: 971: 967: 960: 952: 948: 943: 938: 934: 930: 926: 922: 918: 911: 909: 907: 898: 894: 890: 886: 882: 878: 874: 870: 866: 859: 857: 848: 842: 838: 831: 829: 824: 814: 811: 809: 806: 804: 801: 799: 796: 794: 791: 789: 786: 784: 781: 779: 776: 774: 771: 770: 756: 751: 744: 739: 732: 727: 723: 716: 711: 710: 704: 700: 696: 684: 680: 677: 675:in the retina 674: 671: 668: 667:Calyx of Held 665: 662: 659: 656: 654: 651: 650: 649: 647: 637: 633: 624: 622: 618: 612: 610: 606: 595: 585: 583: 580:for treating 579: 575: 571: 567: 558: 554: 545: 542: 538: 534: 530: 526: 522: 520: 516: 512: 508: 504: 500: 496: 492: 482: 480: 476: 472: 468: 464: 459: 455: 452: 448: 444: 441:that encodes 440: 439: 434: 430: 426: 422: 418: 416: 412: 407: 403: 402:cell polarity 390: 387: 384: 381: 378: 377: 376: 373: 364: 361: 357: 344: 340: 337: 335: 331: 320: 318: 314: 310: 305: 298: 295: 294: 288: 286: 282: 272: 268: 267:gap junctions 264: 260: 257: 253: 249: 245: 241: 237: 233: 232:glutamatergic 228: 224: 220: 216: 212: 211: 210: 204: 203:glutamic acid 200: 199:acetylcholine 196: 191: 182: 178: 170: 160: 150: 140: 137: 133: 129: 125: 121: 117: 113: 109: 100: 98: 94: 90: 86: 82: 78: 74: 70: 66: 62: 57: 53: 51: 47: 43: 39: 30: 26: 22: 3097:Gap junction 3084: 3019:Motor neuron 2813:Axon hillock 2789:nerve fibers 2743:Schwann cell 2653: 2636: 2614: 2532:Medium spiny 2445:White matter 2433:Tissue Types 2342: 2339:Open Biology 2338: 2328: 2303: 2299: 2293: 2258: 2254: 2244: 2203: 2199: 2189: 2170: 2166: 2156: 2131: 2127: 2071: 2067: 2057: 2022: 2016: 1977: 1973: 1963: 1924: 1920: 1880: 1876: 1866: 1855:. 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Retrieved 1503: 1493: 1458: 1454: 1402: 1358: 1354: 1344: 1312:(1): 69–88. 1309: 1305: 1295: 1263:(1): 47–58. 1260: 1256: 1246: 1232: 1188: 1178: 1176: 1144: 1140: 1134: 1123: 1071: 1065: 1022: 1018: 1008: 973: 969: 959: 924: 920: 868: 864: 836: 813:Synaptopathy 722:learnbio.org 701: 697: 693: 643: 634: 630: 613: 602: 577: 573: 569: 568: 564: 555: 551: 537:CB1 receptor 523: 488: 478: 474: 470: 462: 457: 442: 436: 432: 427:, PIP2, and 419: 399: 374: 370: 362: 358: 354: 338: 326: 306: 302: 277: 208: 179: 168: 158: 148: 138: 127: 123: 106: 73:postsynaptic 72: 64: 58: 54: 41: 35: 25: 3112:Active zone 3077:Termination 2927:Interneuron 2831:Telodendron 2739:Myelination 2721:Endoneurium 2716:Perineurium 2537:Interneuron 2527:Von Economo 2475:Decussation 2470:Nerve tract 2440:Grey matter 1931:: 509–521. 1151:: 211–212. 875:: 421–431. 773:Active zone 683:hippocampus 493:release by 274:(chemical). 250:(releasing 240:cholinergic 65:presynaptic 3221:Categories 3182:Nociceptor 2922:Multipolar 2871:Nissl body 2748:Neurilemma 2711:Epineurium 2496:Cell Types 1857:2024-01-04 1728:19 October 1628:2024-01-20 1517:2024-01-01 1504:StatPearls 1425:2005056517 1118:Harper D. 1094:2005051341 1074:. 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Index

Synapse (disambiguation)

nervous system
neuron
signal
plasma membrane
apposition
molecular machinery
axon
dendrite
soma
Astrocytes
neurotransmission
Santiago Ramón y Cajal
neuron doctrine
Charles Sherrington
Michael Foster
Arthur Woollgar Verrall
Greek

neurotransmitters
acetylcholine
glutamic acid
chemical synapse
voltage-gated calcium channels
neurotransmitter
receptors
glutamatergic
GABAergic
cholinergic

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