If a single spinal nerve is cut, the area of tactile loss is always greater than the area of loss of painful sensation, because
Ans. (c) Degree of overlap of fiber carrying tactile sensation is much less(Ref: Ganong, 25th ed/p.160)The degree of overlap of fibers carrying pain is much greater than tactile sensationSo, the area of tactile loss is always greater for tactile sensation
Tactile information is carried by myelinated fast conduction fiber
Tactile receptors adapt quickly
Degree of overlap of fibers carrying tactile sensation is much less
In the primary sensory cortex tactile sensation is represented on a larger area
Nervous System