Lecture 1-28-08 (CH 2) - Speech Areas Broca’s aphasia –...

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Chapter 2 – The Biology Underlying Behavior Central Core Controls basic involuntary functions In common with vertebrates Spinal column – reflexes; communication channel Medulla – breathing, circulation Pons – sleep Reticular Formation – sleep, arousal, attention Cerebellum – controls bodily balance Thalamus – relay station for information concerning the senses Hypothalamus – maintains homeostasis and vital body functions (hunger, thirst, temperature control) Limbic System Controls: Involuntary emotions Instinct (self-preservation) Sexual pleasure (hippocampus) Some memory Cerebral Cortex Responsible for information processing in the brain Controls voluntary behavior Distinguishes us as human Lobes: Frontal – motion Parietal – taste, touch, smell Occipital – controls hearing Temporal – auditory function (hearing) Motor Area – responsible for voluntary movements of particular parts of the body
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Unformatted text preview: Speech Areas Broca’s aphasia – controls speaking language Wernicke’s aphasia – affects understanding language Sensory area Somatosensory area Association Areas In all lobes Largest part of brain lobes Controls higher level thinking and reasoning processes Language, memory, speech Apraxia – inability to integrate activities The specialization of the Hemispheres Hemispheres Two symmetrical left and right halves of the brain that control the side of the body opposite to their location Lateralization The dominance of one hemisphere of the brain in specific functions Connected by ‘corpus callosum’ Left hemisphere • Verbal • Thinking • Reasoning Right hemisphere • Visual spatial • Emotional • Artistic (visual, global) Sides work in tandem...
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