ch. 3 Flashcards
(25 cards)
the cortex
wrinkly part of the brain
what is the cortex divided into
2 hemispheres
contra laterally organized
information from the right side of the body is processed on the left and vice verse
corpus callosum
band of tissue that connects the two hemispheres and allows them to communicate
primary sensory areas
primary visual cortex, primary auditory cortex, somatosensory cortex, the processing of specific sensory input
motor cortex
send signals to motor neurons, controls motion
Association cortex (everything else)
integrate sensory info. to perform complex functions
topographic organization
adjacent portions of cortex control adjacent body parts
penfield (experiment guy)
wanted to know what was in the brain, looked in peoples brains during surgery
four lobes
frontal, parietal, temporal and occipital
frontal lobe
involved in motion and higher order cognition, such as reasoning, planning and language production also mood and personality
Phineas Gage
working on railroad then hit a rod went up his jaw out of his head, he lived, mood changed
frontal lobe contains
notable areas, prefrontal cortex, motor cortex and broca’s area
parietal lobe
important for touch sensation, perception, object recognition and number representation
parietal lobe contains
notable areas, somatosensory
temporal lobe
important for auditory sensation, cortex understanding language and storing autobiographical memory
notable area contains
primary auditory cortex, wernickes area, primary visual cortex
occipital lobe
important for vision
broca’s aphasia
inability to produce speech broca’s area important for producing speech
wernickes aphasia
inability to comprehend speech
wernickes area
important for comprehending speech usually split brain patients
lateralization
some functions are only processed by one hemisphere
Left hem.
right visual field, right hand, language
right hem.
left visual field, left handed
