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PSYC 3325 (30)
John Usher (30)

Lateralization of Function.docx

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PSYC 3325
John Usher

Lateralization of Function ● 2 hemispheres cooperate with each other but do not perform identical functions – some are lateralized: located primarily on one side of brain ● left hemisphere – analysis of information (extraction of elements that make up whole of experience)  good at recognizing serial events – events whose elements occur one after another  involved incontrolling social behaviour  serial functions include: verbal activities (talking, understanding speech of others, reading and writing) ● right hemisphere – specialized for synthesis (putting isolated elements together to perceive things as whole)  ability to draw (especially 3D), read maps, and construct complex objects out of smaller elements ● corpus callosum – large bundle of axons (white matter) that connects cortex of two hemispheres  connects corresponding parts (left and right temporal lobe, etc) Vision: Occipital and Temporal Lobes ● occipital lobe and lower part of temporal lobe – seeing  total damage to primary visual cortex, located in inner surface of posterior occipital lobe, produces blindness  small lesion in primary visual cortex produces hole in specific part of field of vision – visual field is mapped onto surface of primary visual cortex ● visual association cortex is located in rest of occipital lobe and in lower portion of temproal lobe  damage will cause person to be unable to recognize objects by sight ■ visual agnosia – inability of person who is not blind to recognize identity or use of an object by means of vision Audition: The Temporal Lobe ● primary auditory cortex is hidden from view on inner surface of upper temporal lobe ● auditory association cortex is located on lateral surface of upper temporal lobe  damag
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