38:
801:
Nagi, Saad S.; Marshall, Andrew G.; Makdani, Adarsh; Jarocka, Ewa; Liljencrantz, Jaquette; Ridderström, Mikael; Shaikh, Sumaiya; O’Neill, Francis; Saade, Dimah; Donkervoort, Sandra; Foley, A. Reghan; Minde, Jan; Trulsson, Mats; Cole, Jonathan; Bönnemann, Carsten G.; Chesler, Alexander T.; Bushnell,
558:. Aδ fibers carry information from peripheral mechanoreceptors and thermoreceptors to the dorsal horn of the spinal cord. This pathway describes the first-order neuron. Aδ fibers serve to receive and transmit information primarily relating to
204:
There are four subdivisions of group A nerve fibers: alpha (α) Aα; beta (β) Aβ; , gamma (γ) Aγ, and delta (δ) Aδ. These subdivisions have different amounts of myelination and axon thickness and
562:(sharp, immediate, and relatively short-lasting). This type of pain can result from several classifications of stimulants: temperature-induced, mechanical, and chemical. This can be part of a
597:
and axons are sent to the periphery to innervate target organs and are also sent through the dorsal roots to the spinal cord. Within the spinal cord the axons reach the
547:. Type Aβ fibres from the skin are mostly dedicated to touch. However a small fraction of these fast fibres, termed "ultrafast nociceptors", also transmit pain.
943:
1070:
102:
74:
634:
81:
55:
785:
965:
919:
121:
88:
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1624:
1689:
1619:
1234:
70:
721:"Axonal conduction velocity changes following muscle tenotomy or deafferentation during development in the rat"
59:
574:
group. Aδ fibers carry cold, pressure, and acute pain signals; because they are thin (2–5 μm in diameter) and
1309:
17:
1304:
1292:
1063:
653:
1344:
1282:
1339:
989:
1849:
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1634:
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867:
Skljarevski, V.; Ramadan, N. M. (2002). "The nociceptive flexion reflex in humans – review article".
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Basbaum, Allan I.; Bautista, Diana M.; Scherrer, Grégory; Julius, David (October 2009).
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212:. Larger diameter axons and more myelin insulation lead to faster signal propagation.
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1016:
876:
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823:
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732:
691:
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507:
351:
680:"Properties of fast and slow motor units in hind limb and tail muscles of the rat"
582:, but more slowly than other, more thickly myelinated group A nerve fibers. Their
1574:
1543:
1538:
1420:
1415:
1239:
523:
sensory fibers of the alternative classification system, and are the fibers from
472:
321:
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960:. Purves, Dale. (5th ed.). Sunderland, Mass.: Sinauer Associates. 2012.
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Quarterly
Journal of Experimental Physiology and Cognate Medical Sciences
629:(12th ed.). Philadelphia, Pa.: Saunders/Elsevier. pp. 563–564.
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804:"An ultrafast system for signaling mechanical pain in human skin"
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Group A nerves are found in both motor and sensory pathways.
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258:
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138:
800:
802:
M. Catherine; McGlone, Francis; Olausson, Håkan (2019).
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are innervated by type Ia, Ib and II sensory fibers,
909:
308:are innervated by different types of nerve fibers.
62:. Unsourced material may be challenged and removed.
866:
769:
570:of activating withdrawal responses. These are the
1881:
648:
646:
794:
627:Guyton and Hall textbook of medical physiology
578:, they send impulses faster than unmyelinated
1064:
776:. Lippincott Williams & Wilkins. p.
643:
1005:"Cellular and Molecular Mechanisms of Pain"
767:
1071:
1057:
942:: CS1 maint: location missing publisher (
718:
677:
1028:
912:Neurobiology : a functional approach
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744:
695:
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122:Learn how and when to remove this message
996:
601:and terminate in Rexed laminae I to V.
316:by type II and III sensory fibers, and
14:
1882:
950:
611:
1052:
768:Siegel, Allan; Sapru, Hreday (2005).
534:Type Aβ fibres, and type Aγ, are the
624:
60:adding citations to reliable sources
31:
914:(Instructor's ed.). New York.
566:—initiated by the Aδ fibers in the
324:by type III and IV sensory fibers.
27:One of three classes of nerve fiber
24:
1078:
25:
1911:
697:10.1113/expphysiol.1972.sp002151
654:"Classification of Nerve Fibers"
169:, and group C are unmyelinated.
153:. The other two classes are the
137:are one of the three classes of
36:
1235:Oligodendrocyte progenitor cell
47:needs additional citations for
903:
860:
761:
737:10.1113/jphysiol.1980.sp013085
712:
671:
172:The other classification is a
13:
1:
881:10.1016/s0304-3959(02)00018-0
678:Andrew, BL; Part, NJ (1972).
604:
176:grouping that uses the terms
910:Striedter, Georg F. (2016).
7:
1345:Postganglionic nerve fibers
515:Type Aα fibers include the
10:
1916:
1340:Preganglionic nerve fibers
1021:10.1016/j.cell.2009.09.028
430:cutaneous mechanoreceptors
1850:Olfactory receptor neuron
1805:
1746:
1739:
1675:
1605:
1562:
1522:
1514:Neurofibril/neurofilament
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1459:
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1392:
1364:
1270:
1261:
1208:
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165:, group B are moderately
504:paleospinothalamic tract
297:Intrafusal muscle fibers
270:Extrafusal muscle fibers
199:
550:Type Aδ fibers are the
1797:Neuromuscular junction
1660:III or Aδ or fast pain
988:: CS1 maint: others (
828:10.1126/sciadv.aaw1297
772:Essential Neuroscience
468:neospinothalamic tract
461:of touch and pressure
378:Muscle spindle fibres
161:. Group A are heavily
599:posterior grey column
584:conduction velocities
71:"Group A nerve fiber"
1815:Meissner's corpuscle
1780:Postsynaptic density
1677:Efferent nerve fiber
1665:IV or C or slow pain
1607:Afferent nerve fiber
1433:Satellite glial cell
328:Sensory fiber types
208:transmit signals at
159:group C nerve fibers
155:group B nerve fibers
143:generally classified
135:Group A nerve fibers
56:improve this article
1820:Merkel nerve ending
820:2019SciA....5.1297N
719:Russell NJ (1980).
625:Hall, John (2011).
595:dorsal root ganglia
593:are located in the
434:pacinian corpuscles
347:Conduction velocity
329:
238:Conduction velocity
220:
179:type Ia and type Ib
1855:Photoreceptor cell
1825:Pacinian corpuscle
1756:Electrical synapse
1710:Lower motor neuron
1705:Upper motor neuron
1426:Internodal segment
1366:Connective tissues
1336:Autonomic ganglion
459:Free nerve endings
402:Golgi tendon organ
327:
219:Motor fiber types
218:
196:, sensory fibers.
1877:
1876:
1873:
1872:
1840:Free nerve ending
1807:Sensory receptors
1735:
1734:
1650:Ib or Golgi or Aα
1558:
1557:
1441:
1440:
1318:Ramus communicans
1257:
1256:
1253:
1252:
1123:Commissural fiber
1118:Association fiber
1113:Projection fibers
636:978-1-4160-4574-8
564:withdrawal reflex
545:stretch receptors
513:
512:
352:sensory receptors
306:sensory receptors
302:
301:
132:
131:
124:
106:
16:(Redirected from
1907:
1770:Synaptic vesicle
1765:Chemical synapse
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808:Science Advances
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531:, respectively.
527:endings and the
508:Warmth receptors
496:0.5–2.0 m/s
336:Erlanger-Gasser
330:
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314:mechanoreceptors
227:Erlanger-Gasser
221:
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210:different speeds
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32:
21:
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1900:Sensory systems
1895:Neurophysiology
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1879:
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1801:
1731:
1680:
1671:
1655:II or Aβ and Aγ
1610:
1601:
1554:
1544:Apical dendrite
1539:Dendritic spine
1518:
1480:
1450:
1437:
1421:Node of Ranvier
1416:Myelin incisure
1388:
1360:
1249:
1240:Oligodendrocyte
1223:Ependymal cells
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814:(7): eaaw1297.
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658:pharmacy180.com
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552:afferent fibers
541:afferent fibers
506:
473:thermoreceptors
470:
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398:80–120 m/s
375:80–120 m/s
337:
322:thermoreceptors
266:80–120 m/s
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1890:Neurohistology
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1865:Taste receptor
1862:
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1835:Muscle spindle
1832:
1830:Ruffini ending
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1792:Ribbon synapse
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1612:Sensory neuron
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1580:Pseudounipolar
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1548:Basal dendrite
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1351:Nerve fascicle
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1080:Nervous tissue
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1015:(2): 267–284.
995:
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787:978-0781750776
786:
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690:(2): 213–225.
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586:are moderate.
525:muscle spindle
511:
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425:33–75 m/s
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338:Classification
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310:Proprioceptors
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293:4–24 m/s
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229:Classification
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1725:γ motorneuron
1723:
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1720:β motorneuron
1718:
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1715:α motorneuron
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455:3–30 m/s
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112:December 2017
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73: –
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67:Find sources:
61:
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45:This article
43:
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34:
33:
30:
19:
18:A delta fiber
1760:Gap junction
1682:Motor neuron
1659:
1476:Axon hillock
1452:nerve fibers
1406:Schwann cell
1316:
1299:
1277:
1195:Medium spiny
1108:White matter
1096:Tissue Types
1012:
1008:
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958:Neuroscience
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663:September 6,
661:. Retrieved
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529:Golgi tendon
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54:Please help
49:verification
46:
29:
1775:Active zone
1740:Termination
1590:Interneuron
1494:Telodendron
1402:Myelination
1384:Endoneurium
1379:Perineurium
1200:Interneuron
1190:Von Economo
1138:Decussation
1133:Nerve tract
1103:Grey matter
731:: 347–360.
591:cell bodies
556:nociceptors
500:Nociceptors
464:Nociceptors
350:Associated
318:nociceptors
241:Associated
139:nerve fiber
1884:Categories
1845:Nociceptor
1585:Multipolar
1534:Nissl body
1411:Neurilemma
1374:Epineurium
1159:Cell Types
875:(1): 3–8.
605:References
576:myelinated
568:reflex arc
560:acute pain
432:including
304:Different
167:myelinated
163:myelinated
157:, and the
82:newspapers
1860:Hair cell
1394:Neuroglia
1356:Funiculus
1245:Microglia
1218:Astrocyte
1175:Pyramidal
1128:Lemniscus
984:cite book
976:754389847
938:cite book
930:919041751
836:2375-2548
725:J Physiol
206:therefore
1645:Ia or Aα
1575:Unipolar
1524:Dendrite
1509:Axolemma
1504:Axoplasm
1288:Ganglion
1228:Tanycyte
1180:Purkinje
1167:Neuronal
1150:Meninges
1145:Neuropil
1039:19837031
897:23881420
889:11932055
854:31281886
580:C fibers
572:type III
487:0.2–1.5
341:Diameter
232:Diameter
190:type III
147:Erlanger
1787:Autapse
1748:Synapse
1595:Renshaw
1570:Bipolar
1447:Neurons
1300:Ventral
1271:General
1185:Granule
1030:2852643
845:6609212
816:Bibcode
755:7359413
746:1279120
706:4482075
537:type II
521:type Ib
517:type Ia
194:type IV
185:type II
174:sensory
96:scholar
1640:fibers
1278:Dorsal
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589:Their
389:13–20
366:13–20
344:Myelin
257:13–20
235:Myelin
192:, and
151:Gasser
98:
91:
84:
77:
69:
1563:Types
1460:Parts
1329:White
1310:Ramus
1293:Ramus
1210:Glial
893:S2CID
543:from
471:Cold
416:6–12
200:Types
103:JSTOR
89:books
1486:Axon
1468:Soma
1324:Gray
1305:Root
1283:Root
1035:PMID
1009:Cell
990:link
972:OCLC
962:ISBN
944:link
926:OCLC
916:ISBN
885:PMID
869:Pain
850:PMID
832:ISSN
782:ISBN
751:PMID
702:PMID
665:2023
631:ISBN
519:and
452:Thin
446:1–5
440:III
428:All
333:Type
320:and
284:5–8
224:Type
149:and
75:news
1700:SVE
1695:GVE
1690:GSE
1635:SVA
1630:SSA
1625:GVA
1620:GSA
1263:PNS
1088:CNS
1025:PMC
1017:doi
1013:139
877:doi
840:PMC
824:doi
778:257
741:PMC
733:doi
729:298
692:doi
554:of
502:of
479:IV
466:of
422:Yes
395:Yes
383:Ib
372:Yes
290:Yes
263:Yes
145:by
141:as
58:by
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656:.
645:^
613:^
493:No
489:μm
448:μm
443:Aδ
418:μm
413:Aβ
409:II
391:μm
386:Aα
368:μm
363:Aα
359:Ia
286:μm
281:Aγ
259:μm
254:Aα
188:,
182:,
1758:/
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1338:(
1072:e
1065:t
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694::
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639:.
483:C
277:γ
250:α
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119:(
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110:(
100:·
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20:)
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