Editing 20110105 Lecture 4 notes.txt

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***one cannot distinguish between two stimuli in the same field so when receptive fields are large, two distinct stimuli must be farther apart than when the receptive field is smaller
***one cannot distinguish between two stimuli in the same field so when receptive fields are large, two distinct stimuli must be farther apart than when the receptive field is smaller
*Pacinian and ruffini have large receptive fields
*Pacinian and ruffini have large receptive fields
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**Within the field, there is an area of highest sensitivity--near the nerve terminal, presumably.
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**And locations of highest sensitivity; near the nerve terminal, presumably.
**Example: medial half of the hand from the 5'th digits proximal filange to the distal end of the ulna.
**Example: medial half of the hand from the 5'th digits proximal filange to the distal end of the ulna.
*Meissner's corpuscles, Merkel's disks, and free nerve endings have small receptive fields
*Meissner's corpuscles, Merkel's disks, and free nerve endings have small receptive fields

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