PSYCH 1XX3 Lecture Notes - Lecture 6: Visual Cortex, Split-Brain, Montreal Procedure
1 Apr 2014
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*unlike this case study, most human brain lesions are not isolated to a specific structure within the brain. This makes it more difficult to assign impaired function to specific brain areas. This problem can be overcome: study specific brain lesions in animal models. Researcher destroys/inactivates a brain region observes behaviour. Accuracy of results/understanding of lesion depends on precision of lesion. Ie) n170 wave: corresponds to face processing: when combined w/ behavioral measure, eeg & erp signals = informative markers with precise temporal resolution, on the order of milliseconds. Plays imp. role in vital functions (breathing, hr, digestion, reflexes: pons: Relays info about movement from cerebral hemispheres to cerebellum. Contains number of nuclei that"re generally part of reticular formation. Involved in some aspects of emotional processing: ascending reticular formation: May be part of large network responsible for conscious experience. Damage to ras leads to devastting losses in brain function. In extreme cases leads to permanent coma: descending reticular formation:
