A subject's reaction to the sensation when exposed to the application of a pin, needle or minor electrical stimulus is applied to a point on the skin. Sensations may be attributed to feeling an itch, or other sensation depending on how applied.
A subject's reaction to the sensation when exposed to the application of a pin, needle or minor electrical stimulus is applied to a point on the skin. Sensations may be attributed to feeling an itch, or other sensation depending on how applied.