318:, which consists of ineffective afferent neurons with fully functioning efferent neurons; essentially, motor movement without somatosensation. Sensory loss can occur due to a minor nick or lesion on the spinal cord which creates a problem within the neurosystem. This can lead to loss of smell, taste, touch, sight, and hearing. In most cases it often leads to issues with touch. Sometimes people cannot feel touch at all while other times a light finger tap feels like someone has punched them. There are medications and therapies that can help control the symptoms of sensory loss and deprivation.
352:(meaning "pleasant/savory taste"). It is sometimes confused with anosmia (a loss of the sense of smell). Because the tongue can only indicate texture and differentiate between sweet, sour, bitter, salty, and umami, most of what is perceived as the sense of taste is actually derived from smell. True ageusia is relatively rare compared to hypogeusia (a partial loss of taste) and dysgeusia (a distortion or alteration of taste).
266:
While touch (also called tactile or tactual perception) is considered one of the five traditional senses, the impression of touch is formed from several modalities. In medicine, the colloquial term "touch" is usually replaced with "somatic senses" to better reflect the variety of mechanisms involved.
430:
older adults had a dual sensory impairment, and 70% of severely visually impaired older adults additionally suffered from significant hearing loss. Vision and hearing loss both interfere with the interpretation and comprehension of speech. People with sensory loss often have problems communicating.
204:, may indicate a problem with the nerves in the ear or brain. Hearing loss may be unilateral or bilateral. Unilateral hearing loss is most often associated with conductive causes, trauma, and acoustic neuromas. Pain in the ear is associated with ear infections, trauma, and obstruction in the canal.
101:
Partial or total vision loss may affect every single area of a person's life. Though loss of eyesight may occur naturally with age, trauma to the eye or exposure to hazardous conditions may also cause this serious condition. Workers in virtually any field may be at risk of sustaining eye injuries
241:
The diagnosis of anosmia as well as the degree of impairment can now be tested much more efficiently and effectively than ever before thanks to "smell testing kits" that have been made available as well as screening tests which use materials that most clinics would readily have.
179:
Hearing loss may be gradual or sudden. Hearing loss may be very mild, resulting in minor difficulties with conversation, or as severe as complete deafness. The speed with which hearing loss occurs may give clues as to the cause. If hearing loss is sudden, it may be from
363:. The lingual nerve passes taste for the front two-thirds of the tongue and the glossopharyngeal nerve passes taste for the back third of the tongue. The lingual nerve can also be damaged during otologic surgery, causing a feeling of metal taste.
583:
Stevens, Joseph C.; Alvarez-Reeves, Marty; Dipietro, Loretta; Mack, Gary W.; Green, Barry G. (September 2003). "Decline of tactile acuity in aging: a study of body site, blood flow, and lifetime habits of smoking and physical activity".
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is a complex sensory system made up of a number of different receptors, including thermoreceptors, nociceptors, mechanoreceptors and chemoreceptors. It also comprises essential processing centres, or sensory modalities, such as
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Many cases of congenital anosmia remain unreported and undiagnosed. Since the disorder is present from birth the individual may have little or no understanding of the sense of smell, hence are unaware of the deficit.
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in the nose or by brain injury in which there is damage to the olfactory nerve or damage to brain areas that process smell. The lack of the sense of smell at birth, usually due to genetic factors, is referred to as
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such as a laceration or a non-penetrating injury such as an impact. Because the eye is a delicate and complex organ, even a slight injury may have a temporary or permanent effect on eyesight.
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can also lead to blindness. Most causes of vision loss can cause varying degrees of damage, from total blindness to a negligible effect. Media opacity occurs in the presence of
263:, touch, temperature, and nociception. The sensory receptors cover the skin and epithelia, skeletal muscles, bones and joints, internal organs, and the cardiovascular system.
442:, anxious, lethargic, and dissatisfied. Thus, sensory loss, the inability to communicate, and poor psychosocial functioning reduces quality of life and well-being.
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Bizley, J. K.; Walker, K. M. M. (2010). "Sensitivity and
Selectivity of Neurons in Auditory Cortex to the Pitch, Timbre, and Location of Sounds".
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A temporary loss of smell can be caused by a blocked nose or infection. In contrast, a permanent loss of smell may be caused by death of
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lead to dysfunction in the afferent nerve pathway once the signal has been correctly transmitted from retinal photoreceptors.
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through trauma or exposure. A traumatic eye injury occurs when the eye itself sustains some form of trauma, whether a
718:"Communication and psychosocial consequences of sensory loss in older adults: overview and rehabilitation directions"
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functioning. Older adults with sensory loss often find it difficult to adapt to their sensory loss, becoming
90:. Vision loss often results despite correctly functioning retinal receptors. Optic nerve diseases such as
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Personal, situational and environmental factors can also become prohibitive barriers to communication.
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148:. Primary causes of hearing loss due to an impaired sensory system include long-term exposure to
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Tissue damage to the nerves that support the tongue can cause ageusia, especially damage to the
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Macaluso, E. (2010). "Orienting of spatial attention and the interplay between the senses. ".
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Dual sensory loss is the simultaneous loss of two senses. Research has shown that 6% of non-
378:, a distortion or alteration of taste. The primary cause of ageusia involves damage to the
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Li, X. (1976). "Acute
Central Cord Syndrome Injury Mechanisms and Stress Features".
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signals to varying areas of the body, causing both a loss of touch and a loss of
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Craig JC (1999). "Grating orientation as a measure of tactile spatial acuity".
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Hawkins, S. (2010). "Phonological features, auditory objects, and illusions".
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Ageusia is the loss of taste, particularly the inability to detect
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of sound which can typically be heard by members of their
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such as meningoencephalopathy. Other causes include a
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Degrees of vision loss vary dramatically, although the
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released in 1979 categorized them into three tiers:
32:, these impairments are due to damages prior to the
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434:Poor communication frequently results in poor
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716:Heine, C.; Browning, C. J. (1 January 2002).
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314:. Other types of somatosensory loss include
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316:hereditary sensory and autonomic neuropathy
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422:Dual sensory loss and psychological impact
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218:Anosmia is the inability to perceive
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586:Somatosensory & Motor Research
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392:glossopharyngeal nerve
361:glossopharyngeal nerve
890:Psychological stress
478:Journal of Phonetics
256:somatosensory system
96:retrobulbar neuritis
404:infectious diseases
168:, which damage the
150:environmental noise
88:photoreceptor cells
70:diseases, although
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312:motor coordination
250:Somatosensory loss
236:congenital anosmia
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126:frequencies
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46:Vision loss
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911:Physiology
905:Categories
463:References
452:Perception
384:taste buds
372:hypogeusia
342:bitterness
166:meningitis
60:low vision
34:perception
18:sense loss
880:Sensation
870:Satiation
742:0963-8288
440:depressed
414:, and/or
412:radiation
408:vitamin B
390:, or the
376:dysgeusia
346:saltiness
334:sweetness
292:paralysis
224:olfaction
80:opacities
64:blindness
36:process.
22:receptors
830:Blushing
815:Appetite
758:32915734
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446:See also
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338:sourness
308:efferent
304:afferent
198:tinnitus
820:Arousal
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416:tobacco
368:ageusia
328:Ageusia
322:Ageusia
214:Anosmia
208:Anosmia
202:vertigo
170:cochlea
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885:Sleep
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696:S2CID
653:S2CID
629:Spine
610:S2CID
529:S2CID
418:use.
350:umami
284:touch
194:tumor
192:or a
190:aging
84:image
52:ICD-9
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738:ISSN
688:PMID
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306:and
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280:cold
276:heat
254:The
220:odor
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