PSYB51H3 Lecture Notes - Lecture 11: Hair Cell, Habituation, Fred Lawrence Whipple Observatory
Document Summary
Major difference: touch doenst have two nerves such as auditory or visual do. Somatosensory trunks are formed by axons of various tactile recptors thant bundle together. Also, optic nerves etc go directly to the brian wehre as tactile nerves go through teh spinal cord to the brian. Touch sensations that result from skin being stimulated are are spatially represented in area s1. Some areas of the bodya re overrepresented in the sensory homunculs and are dedictae much more processing. receptors are much more heavily concentrated in such areas. Perceived sensation from a physically amputate limb of the body. Parts of the brain are lsitenign in to missing limbs not fullya ware of altered connections so they attribute activity in these brain areas to stimulation form missing loimbs. Phantom pain is real and could be very intense. Two contact points will elicit different responses if : Stereotyped hand movement pattern used to contact objects inroder to perceive their properties.
