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Cortical Functions-3

Cerebral Cortex, Intellectual Functions of the Brain, Learning, and Memory Chapter 57-Guyton and Hall, Textbook of Medical Physiology, 12th edition -Unit Ten: The Nervous System

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What are the Granular (stellate) neurons?interneurons of the sensory areas of the cortex Found in association areas between sensory and motor areas
How neurotransmitters affect the granular cortical neurons?Excitatory with glutamate Inhibitory with GABA
What are Fusiform and Pyramidal neurons?they give rise to the output fibers of the cortex pyramidal nerve fibers
How many layers make the cerebral cortex?six layers.
Most incoming specific sensory signals from the body terminate in cortical layer ___IV.
Most of the output signals leave the cortex through neurons located in layers ___V&VI.
The fibers from the cortex to the thalamus arise in layer__VI.
most of the intracortical association functions are peformed by layersI, II, and III.
The secondary motor areas provide the“patterns” of motor activity.
Which cortical area interpret the shape or texture of an object in one’s handthe secondary motor areas.
Wernicke’s area is part of theparieto-occipitotemporal association area
The angular gyrus area is part of theparieto-occipitotemporal association area
Which cortical areas store on a short-term basis the “working memories”?the pre-frontal association area.
Which cortical areas enables language comprehension?Wernicke’s area.
Which cortical areas enables reading?the angular gyrus area.
Which cortical areas enables word formationthe Broca’s area.
Which cortical areas is responsible for behavior, emotions, and motivation?the limbic association area.
Prosophenosia is theinability to recognize faces.
Which brain areas damage results in decreased aggressiveness, inappropriate social behavior, inability to progress toward goals and engage “working memory”?the prefrontal association areas.
Wernicke’s area is highly developed in thedominant side of the brain.
Activation of Wernicke’s area can callcomplicated memory patterns.
Damage to the Angular Gyrus leads toseing words and know that they are words but not be able to interpret their meanings.
Damage to the Angular Gyrus leads todyslexia, or word blindness.
In about 95% of people which is the dominant hemisphere?the left hemisphere.
The motor areas for controlling hands are located in thethe dominant hemisphere.
Which is the significance of the corpus callosum?allows communication between the two hemispheres
Damage to the Wernicke’s area in the nondominant hemisphere affects?interpreting music, nonverbal visual experiences, intonations of people’s voices, and somatic experiences related to use of the limbs and hands.
Which brian area if damaged the ability to solve complex problems will be lost?the prefrontal areas.
Cutting the Corpus Callosum results inpreventing the transfer of somatic and visual info from the right to left hemisphere.
Wernicke’s Aphasia isunderstanding either the spoken word or the written word but are unable to interpret the thought that is expressed.
Global aphasia islosing languag understanding or communication.
What causes motor aphasia?loss of Broca’ area.
What is declarative memory?memory of the various details of integrated thought.
What is skill memory?memory of motor activities based on previous learning.
Memories are stored by creatingmemory traces.
Habituation is a type ofnegative memory.
This is positive memory is the brain enhancing and storing the memory traces as results from facilitation ofthe synaptic pathways and memory sensitization.
Intermediate long-term memories last fordays to weeks but then fade away.
“Working memory,” isis terminated as each stage of the problem is resolved.
“Working memory,” isshort-term memory.
Which neurotransmitter supports memory Facilitation?serotonin.
For short-term memory to be converted into long-term memory it must become“consolidated” memory.
For short-term memory to be converted into long-term memory requires ___5 to 10 minutes for minimal consolidation and 1 hour or more for strong consolidation.
Hippocampus promotesstorage of memories.
Hippocampal Lesions leads toanterograde Amnesia.
Retrograde Amnesia is theinability to recall memories from the past.
What is dementia?A disorder of cognition, interferes with daily functioning and results in loss of independence.
Apathy, loss of initiative, depression, anxiety, irritability, paranoia, delusional thinking, and hallucinations are allneuropsychiatric symptoms.
The most common dementia isAlzheimer's disease.
Dementia is diagnosed based on evidence ofcognitive dysfunction.
Alzheimer's disease isDementing illness in which anterograde amnesia is a dominant symptom.
Between 60 and 80% of all dementing illness is due toAlzheimer's disease.
The histopathologic diagnosis of Alzheimer's disease is based on the presence ofneuritic plaques and neurofibrillary tangles.
The most consistent neurotransmitter deficit in Alzheimer's disease is incholinergic neurotransmission.
Early Alzheimer's disease manifests:anterograde amnesia with impairment in short-term memory.
Dementia with formation of Lewy bodies, visual hallucinations, and sleep disorder indicatesParkinsonism
Dementia with prominent behavioral, personality changes, prominent motor and language difficulties indicatesFrontotemporal lobar degeneration
What is vascular dementia?It is a dementing illness cause by cerebral infarction.
The diagnosis of dementia with Lewy bodies is similar to diagnosis ofof both dementia and Parkinson's disease.
the syndrome of behavior-variant frontotemporal dementia isThe most common neurodegenerative disorder the caused by prefrontal and anterior temporal neocortices.


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