PHGY 314 Chapter Notes - Chapter 17: Posterior Parietal Cortex, Primary Motor Cortex, Parietal Lobe
23 Sep 2017
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Document Summary
Ch17- internal representation of space & action: for vision, information from retina separated into different pathways based on aspect of image (form, movement, color, then integrated together into full images. Info about specific stimulus sent to unimodal regions, then combine in multimodal regions: perception is result of fashion in which nerve cells wired, connections differ between individuals, altered by learning. Cognition & perception: cognition: ways by which sensory input is modified, dampened, stored, recovered, interpreted, used, etc, perception dependent on both stimulus and mental apparatus of perceiver. In the cerebral cortex"s parietal lobe, main divisions: s-i: primary somatosensory cortice, s-ii: secondary somatosensory cortice, posterior parietal cortex. If stop using limb (sever nerves) then adjacent region in cortex expands and takes over: phantom limb caused by rearrangement of cortical circuits, region of cortex previously associated with limb now receiving afferents from other site on skin.
