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4 Lobes of the Brain.docx

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PSYC 100
Ingrid Johnsrude

4 Lobes of the Brain  Frontal Lobe o front portion of cerebral cortex o includes Broca’s speech area and motor cortex o movement, planning, flexibility  Parietal lobe o behind the frontal lobe o contains somatosensory cortex o spatial perception and memory  Temporal Lobe o Below frontal lobe o Contains auditory cortex  Occipital Lobe o Back of the brain o Contains primary visual cortex Cortexs  Primary visual cortex o Receives visual information o Occipital lobe  Primary auditory cortex o Receives auditory information o Temporal lobe  Primary somatosensory cortex o Vertical strip in the middle of the cerebral hemisphere o Parietal lobe o Receives information from the body senses o Left side of the hemisphere controls right hand, right primary cortex controls left hand  Primary motor cortex o Directly controls the movements of the body, posterior  Sensory association cortex o Receive information from the primary sense areas Anterior region (front) o is involved in movement related activities o planning and executing behaviours Posterior region (back) o perceiving and learning contralateral – residing in the side of the body opposite the reference point prefrontal cortex – front portion of the frontal lobe, contains motor association cortex motor association cortex – regions of the cerebral cortex that control the primary motor cortex. Involved in planning and executing behaviours Left hemisphere  Participates in analysis of information  Extraction of elements that make up an experience  Verbal activities (talking, understanding speech, reading, writing) Right Hemisphere  Synthesis  Putting isolated elements together to perceive things as a whole  E.g. drawing sketches Corpus callosum  a large band of axons that connects the two cerebral hemispheres  allows each region of the association cortex to know what is happening in the corresponding region of the opposite side of the brain visual agnosia – the inability of a person who is not blind to recognize the identity or use of an object by means of vision left parietal lobe plays an important role in our ability to keep track of the location of moving parts of our own body right parietal
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