PSYCH 7A Lecture Notes - Lecture 5: Frontal Lobe, Visual Cortex, Psychophysics
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Psych 7a - lecture 5 - brain and psychology (cont. ) Consists of the cerebral cortex and several other subcortical structures. Divided into two hemispheres (left/right) that are connected by the corpus callosum. Corpus callosum - bundle of nerve fibers that send messages between the two hemispheres. The convoluted outer surface of the cerebrum. 33mm ( inch) layer of densely-packed neurons. Allows us to coordinate movement, perceive the environment, use language, problem-solving, planning, judgment, etc. Fissures (deep valleys in the cortex) divide the cortex into lobes. Receiving stations for sensory information (sensory projection areas) Dispatching centers for motor commands (motor projection areas) Projection means that particular areas of the body are mapped onto particular areas of the cortex. Amount of cortical area determined by how precise movements are for that part of the body - not by the size of the body part. Amount of cortical area determined by how sensitive that particular body part is -
