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Control of Behaviour.docx

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PSYC 3325
John Usher

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Control of Behaviour ● regulating physiological functions – looks inward (body temperature, blood pressure, nutrient levels) Organization of Cerebral Cortex ● contains large groove/fissure called central fissure – provides important dividing line between anterior part of cerebral cortex and posterior regions  anterior – toward front  posterior – toward back ● cerbral cortex – divided into 4 areas/lobes, named for bones of skulls that cover them: frontal lobe, parietal lobe, temporal lobe, and occipital lobe  brain contains 2 of each lobe, one in each hemisphere  frontal lobe – front portion of cerebral cortex, including Broca's speech area and motor cortex; damage impairs movement, planning, and flexibility in behavioural strategies  parietal lobe – region of cerebral cortex behind frontal lobe and above temporal lobe; contains somatosensory cortex; is invovled in spatial perception and memory  temporal lobe – portion of cerbral cortex below frontal and parietal lobes; contains auditory cortex  occipital lobe – nearmost portion of cerebral cortex; contains primary visual cortex Regions of Primary Sensory and Motor Cortex ● we become aware of events in environment through 5 major senses:  vision, audition, olfaction, gustation, and somatosenses (touch, pain, temperature) ● three areas of cerebral cortex receive information from sensory organs  primary visual cortex – region of cerebral cortex that receives information directly from visual system; located on inner surface of occipital lobe  primary auditory cortex – region of cerebral cortex that receives information directly from auditory system; located on inner surface of deep fissure in temporal lobe  primary somatosensory cortex – region of cerebral cortex that receives information directly from somatosensory system and base receives information on taste; located on vertical strip near middle of parietal lobe ■ receive information from opposite side
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