PSYC 256 Lecture Notes - Lecture 3: Lesion, Action Potential, Positron Emission Tomography

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13 Jun 2018
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BRAIN AND BEHAVIOR
Anatomical Terminology
Dorsal: top/superior
Ventral: bottom/inferior
Rostral: front/anterior
Caudal: back/posterior
Medial: middle
Lateral: away from the middle or also side of the body
Proximal: closer
Distal: farther away
Cortex: outer brain/wrinkly thing
Brain Lobes: frontal, parietal, temporal, occipital
Left hemisphere: gyri & sulci
Cerebral Cortex Principles
Hemispheric specialization
o Each lobe has specialized functions
Localization of function
o Specific mental processes are correlated with discrete regions of the brain
Corpus Callosum
A bundle of axons that connects the left and right hemispheres
o Left: language dominant
o Right: visuospatial dominant
Split Brain Studies
Sperry (1960-1998)
o First to study patients with a split corpus callosum for epilepsy treatment
o Conclusion: two hemispheres function independently
Gazzaniga (1980s-current)
o Conclusion: two hemispheres are complementarity
Conclusions
Left hemisphere
o Rhythm
o Temporal order
o Language
Right hemisphere
o Melody
o Spatial orientation
o Face and pattern recognition
Lesion Approach
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