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29 Cards in this Set
- Front
- Back
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according to brodman about how many cortical areas does each hemisphere contain?
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-52
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which is the dominant hemisphere for language in most people?
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-left hemisphere
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what are polymodal perception areas and what areas are they?
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-create perceptions involving more than one sensory modality
-5,7,39,40 |
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what cortical areas are important for planning and performance of motor behavior?
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-the premotor cortex (rostral to the primary motor ctx)
-FEF |
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what is wernickes area important for?
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-speech comprehension
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what is brocas area important for?
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-language expression
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how does info get from wernickes to brocas area?
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-thru the arcuate fibers
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what areas contribute to anterograde memory?
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-hippocampus and amygdala
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what areas are involved in creative or original thinking?
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-prefrontal areas
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what areas are involved in personality, motivation, emotional state, and arousal?
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-midline frontal lobe areas
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what areas are involved in judegement, decision making, and social conduct?
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-medial and inferior surfaces of the frontal lobes
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in what area does most sensory perception occur?
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-posterior hemisphere
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in what area does most motor and language perception occur?
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-central hemishpere
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in what area does most learning, thinking, emotion, personality occur?
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-anterior and medial hemisphere
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what is required for conciousness?
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-activity in the cerebral cortex
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dualism
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-conciousness cant be explained by the substance of the brain
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electrical activity theory
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-conciousness is an emergent property of electrical activity in the brain/ctx
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global spatial theories
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-conciousness is an emergent property of large, diffuse groups of neurons
-not possible to localize conciousness to activation of specific neurons |
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local spatial theories
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-conciousness emerges from activity in particular subsystems of neurons that can be localized
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temporal theories
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-conciousness emerges from large numbers of interconnected parts of ctx whose activity is synchronized and oscillating at the same frequency
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cortical matrix processes
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-conciousness is the physical processes of the brain
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what does blindsight illustrate?
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-that there can be a level of recognition without a level of awareness
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prosopagnosia
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-inability to recognize faces
-results from temporal lobe damage -awareness without recognition |
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what characterizes an awake, desynchronized EEG pattern?
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-low amplitude voltage
-high frequency -beta waves |
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what characterizes an asleep, synchronized EEG pattern?
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-high amplitude voltage
-low frequency -delta waves -associated with deep sleep |
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what are typical EEG patterns of comatose patients?
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-deep coma=flat in both hemispheres
-less deep=high amplitude and low frequency |
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what are the criteria for brain death?
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-EEG having no waves greater than 2uV amplitude that is irreversible
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reticular activating system is important for what?
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-activity here is important for EEG desynchronization
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what three things does the RAS consist of?
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-cholinergic cells in LDT and PPT nuclei
-serotonergic cells in the raphe nuclei -noradrenergic neurons in the locus ceruleus |
