What's the difference between tactile and vibrissa?

Tactile


Definition:

  • (a.) Of or pertaining to the organs, or the sense, of touch; perceiving, or perceptible, by the touch; capable of being touched; as, tactile corpuscles; tactile sensations.

Example Sentences:

  • (1) Tactile stimulation of a coin-sized area in a T-2 dermatome consistently triggered a lancinating pain in the ipsilateral C-8 dermatome in a 38-year-old woman.
  • (2) Study I findings did not provide support for synergistic mechanisms; nonorthogonal analysis of variance showed interaction effects (CRT x IT) restricted to tactile-perceptual speed.
  • (3) For tactile modalities, a lesion of the spinothalamic complex causes minimal or no defects and a lesion of the posterior columns causes only slight defects, whereas a lesion of both pathways gives rise to total loss of tactile and pressure sensibility in the part of the body served by both pathways.
  • (4) More importantly, motor and cardiovascular responses to startle may be separated through discrimination of afferent stimuli suggesting either differences in neural pathways for acoustic and tactile stimuli or a differential dependency of the various responses on stimulus characteristics.
  • (5) Animals were trained to perform an orientation match-to-sample task using either a visual or a tactile orientation sample.
  • (6) Simple screening tests for visual and tactile inattention were used to investigate the influence of perceptual deficits on predictions for the outcome of acute stroke.
  • (7) The position of the visual receptive field of these neurons did not change after saccadic eyes displacements, but remained in-register with the tactile receptive field.
  • (8) Complete transection of the thoracic spinal cord eliminated both thermally elicited responses and orienting responses to noxious and tactile mechanical stimulation of the hindlimbs.
  • (9) The similarity between type III cells and Merkel cells (cells of the tactile system) was surprising.
  • (10) The level of the DA metabolite 3,4-dihydroxyphenylacetic acid (DOPAC) increases only in pups receiving both odor and tactile stimulation and peaks at about 200% of baseline.
  • (11) IR is considered to be caused by a group of neurons in the brain stem which inhibit spinal motoneurons, either directly or indirectly, when those inhibitory neurons are activated by a specific pattern of tactile and proprioceptive input.
  • (12) Although they may occur spontaneously, they are commonly precipitated by tactile stimulation or movement of the extremity.
  • (13) The oscillatory activity was not affected by anesthesia, but it was often reduced by tactile stimulation or self-initiated movements.
  • (14) Detection of estrus in mares is problematic in that it requires the presence (or at least facsimile acoustic or tactile stimuli) or a stallion.
  • (15) The usefulness of tactile devices as aids to lipreading has been established.
  • (16) Tactile stimuli were applied to the right index fingertip at intervals ranging from 63 to 1,000 msec after the completion of rapid thumb movement.
  • (17) We previously reported a modality-specific layering of leg sensory axons in the CNS of the flies Phormia regina and Drosophila melanogaster with tactile and gustatory axons projecting into a ventral layer and the proprioceptive hair plate axons into an intermediate layer.
  • (18) Profound inhibitions of the second phase were also produced by tactile segmental stimulation and noxious stimuli applied to widespread areas of the body (diffuse noxious inhibitory controls).
  • (19) The apparatus is easily constructed, easily operated, and markedly increases the control of variables in tactile form perception experiments.
  • (20) Double burst stimulation (DBS) is a new nerve stimulation pattern introduced to facilitate tactile evaluation of recovery from neuromuscular blockade.

Vibrissa


Definition:

  • (n.) One of the specialized or tactile hairs which grow about the nostrils, or on other parts of the face, in many animals, as the so-called whiskers of the cat, and the hairs of the nostrils of man.
  • (n.) The bristlelike feathers near the mouth of many birds.

Example Sentences:

  • (1) Cholinergic muscarinic receptor binding and acetylcholinesterase (AChE) histochemistry were studied in the barrel cortex of adult, vibrissae deprived and vibrissae denervated mice.
  • (2) Fifty percent of the stained neurons were vibrissa sensitive.
  • (3) The specific cortical vibrissa area is somatotopically organized; 39% of the cortical units in that area responded to stimulation of only a single sinus hair but in some cases all maxillary vibrissae activated a single cortical neurone.
  • (4) Peripheral processes of dorsomedially situated ganglion cells course dorsally toward the presumptive vibrissa field, and those of ventrolaterally situated ganglion cells project ventrally.
  • (5) Movements of RF-vibrissae produced a burst of multiple discharges in S-TR neurons and single spike discharges followed by a prominent suppression of spontaneous discharges in VB neurons.
  • (6) The PSA frequency varied in relation to the difference between fast and slow vibrissa tremor, as reported previously.
  • (7) Responses of neurones to either physiological stimulation of hair and vibrissa follicle sensory afferents and to ionophoretically applied excitatory amino acids were challenged with the antagonists D-2-amino-5-phosphonovalerate (APV), kynurenate and gamma-D-glutamylaminomethyl sulphonate (GAMS).
  • (8) The following structures of the host brain were stimulated: ventrobasal complex and posterior thalamic nuclei, ipsilateral area of vibrissae representation in the sensorimotor cortex and contralateral barrel field.
  • (9) The vibrissae of rex are curved or bent and may break off; those of waved are a mixture of straight, curved, and bent hairs.
  • (10) These patterns of metabolic activity underscore the vertical and horizontal organization of the SmI vibrissa cortex and suggest that neurons located within the central core of a column have functional properties distinct from those located in zones where individual columns interface.
  • (11) The normal cytoarchitectonic pattern of barrels in layer IV of mouse SmI face cortex is altered by early damage to the mystacial vibrissae (Van der Loos and Woolsey, '73).
  • (12) In most cases, each of the response reflexes was found to be associated with several genes (locomotion, hind limb, crossed extensor, righting, vibrissae placing, bar holding).
  • (13) All but one of the recovered cells were responsive to deflection of any one of a number (4-19) of vibrissae.
  • (14) The arrangement of barreloids showed a distinct orderlines similar to that of facial vibrissae on a horizontal section.
  • (15) The paper deals with the contribution of intracortical inhibitory processes to the organization of receptive fields in the vibrissae projection area of the somatosensory cortex.
  • (16) The connective tissues are organized into capsular and extracapsular systems that serve to stabilize the vibrissae and return them to initial rest positions.
  • (17) The oculomotor effects of vibrissae stimulation have been studied in the "encĂ©phale isolĂ©" non-anaesthetized Cat.
  • (18) Immediately after nerve crushing, the latency of the initial positive potential evoked at contralateral scalp sites by stimulating the vibrissae of the nerve-crushed side was increased.
  • (19) Injections of isotope in the two other foci of vibrissa-evoked activity usually recorded in each brain were invariably found to label a part of area 3b of the first somatosensory area (SI) in the case of the more anterior focus.
  • (20) Deprivation of vibrissae affected the performance of the control cats only in darkness and had no effect on the blind cats.

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