01:830:331 Lecture Notes - Lecture 33: Pyramidal Cell, Somatosensory System, Occipital Lobe
24 Jul 2016
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Document Summary
~cats that are born blind have better sense of hearing than normal cats. ~anterior ectosylvian cortex in brain for locating stimuli in space. Three different sense come together to help with location of stimuli. ~in blind cats, the part of the anterior ectosylvian cortex for audition (hearing) is bigger. ~in blind cats, the part for vision is smaller. ~barrel cortex is the cortex devoted to whiskers. ~blind cats have bigger whiskers and bigger barrels in cortex. ~indoor cats also have smaller whiskers and barrels. ~moving an indoor cat to outdoors can make their whiskers grow. ~greenough et al looked at neural plasticity in adults. ~gave animals a new maze every day for 26 days. Stellate cells have small cell body, axon branches only have local targets, intracortical processing. Pyramidal cells large, triangular cell body, has dendrites that integrate info from multiple stellate cells, axons branch out to local and faraway targets, does intracortical processing and has outputs.
