notes 2010

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Published on 13 Feb 2011
School
UTSC
Department
Psychology
Course
PSYB65H3
Professor
evolutionary pressure (become omre smart) force the human brain to expand over time, cover is
not smooth
right hemisphere and left hemisphere are connected at corpus callosum
-connect analogous brain parts of two hemisphere
3 big fissures
-longtudinal fissure separate LH and RH
-central fissure separate each hemisphere into anterior part and posterior part
-lateral (sylvian) fissure separete temporal lobe from other two parts
4 big lobes
-frontal lobe (from anterior brain to central fissure)
-parietal lobe (from central fissure to occipital lobe)
-occipital lobe (at the back of the brain)
-temporal lobe (ventral/bottom portion of the brain)
-each lobe has its primary and associational cortex for a certain sense
(eg: occipital lobe has primary and associational visual cortex which involves in visual process)
primary cortex--
-primarily receive input from outside (particular sensory information)
associational cortex--
-process the in put info from primary cortex ('make sense')
-more evoled animals have more percentage of associational cortex relative to primary cortex
primary area in each lobe has a number accord ing to the brain map built by Brodmann
-6 and 4 for frontal lobe
-3 1 2 for parietal lobe
-17 for occipital lobe (deals with visual inputs)
-41 for temporal lobe (deals with speech and auditory inputs)
frontal lobe
-precentral gyrus (6&4-primary motor strip): controls motor movement
neurons in this gyrus directly controls muscle movement (fine map of which part controls which
body muscle --> homunculus)
-associational motor cortex: involes in planning of motor movements even lifestyle (higher
fuctions rather than simple body movement)
-inhibit inappropriate behaviours
parietal lobe
-there is NOT a clear boundary between parietal and occipital lobe
-postcentral gyrus (3 1 2-primary sensory strip): somatosensory (none-specialized senses) input
-associational cortex (all other remaining parts in this lobe): feelings of one's own body
occipital lobe
-primary visual cortex(17-primary visual receptive area): receives information from eyes
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Document Summary

Evolutionary pressure (become omre smart) force the human brain to expand over time, cover is not smooth right hemisphere and left hemisphere are connected at corpus callosum. Central fissure separate each hemisphere into anterior part and posterior part. Lateral (sylvian) fissure separete temporal lobe from other two parts. Frontal lobe (from anterior brain to central fissure) Parietal lobe (from central fissure to occipital lobe) Occipital lobe (at the back of the brain) Each lobe has its primary and associational cortex for a certain sense (eg: occipital lobe has primary and associational visual cortex which involves in visual process) primary cortex-- Primarily receive input from outside (particular sensory information) associational cortex-- Process the input info from primary cortex ("make sense") More evoled animals have more percentage of associational cortex relative to primary cortex primary area in each lobe has a number according to the brain map built by brodmann. 17 for occipital lobe (deals with visual inputs)