Cortical Functioning Areas Flashcards Preview

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Flashcards in Cortical Functioning Areas Deck (12):

Parietal lobe, post-central gyrus, Broadmann areas 3, 1, 2
Processes pain, temperature, touch
Receives projections from VPL and VPM thalamus
Damage results in sensory loss on the contralateral side of the body or face

Primary somatosensory area


Parietal lobe, superior bank of lateral fissure

primary somatosensory area II


Superior parietal lobule, areas 5, 7
Integrates impulses associated with somatic sensations for recognition of body parts, position, and appreciation of sensations
Damage results in defective recognition of sensory impressions, failure to recognize objects

somatosensory association area


Area 17
Receives input from fibers originating in the LGN thalamus
Borders calcarine sulcus above and below the banks
Retinotopically organized
Unilateral lesion results in contralateral homonymous hemianopsia

primary visual cortex


Areas 18, 19
Essential for seeing colors and motion

visual association areas


Temporal lobe, transverse gyri of Heschl, area 41
Dorsal surface of the superior temporal gyrus
Receives input from MGN thalamus
Tonotopically organized
Unilateral lesion results in difficulty in localizing sounds and difficulty distinguishing speech from background noise

primary auditory cortex


Posterior part of area 22
Interprets what is heard

auditory association area


Parietal and temporal lobes, inferior parietal lobule
Supramarginal gyrus, area 40
Angular gyrus, area 39
Superior temporal gyrus, area 22
Involved in understanding speech
Damage to the dominant hemisphere results in aphasia

Wernicke's area


Inferior frontal gyrus, areas 44, 45
Involved in generating speech
Damage to the dominant hemisphere results in difficulty producing fluent sentences, resulting in telegraphic speech

Broca's area


Frontal lobe, precentral gyrus, area 4
Somatotopic representation
Receives input from premotor somatosensory area, and VA and VL thalamus
Motor-sensory area

primary motor area


Frontal lobe, areas 6, 8
Produces movements similar to those obtained by stimulating area 4 but require stronger stimulation
Stimulation of area 8 (frontal eye field) results in conjugate movement of the eyes to opposite side, influences voluntary eye movements

premotor area


Areas 9, 10, 11, 12
Functions in higher intellectual capacities and executive functions such as planning, ambition, drive, and personality
Lobotomy destroys ambition, personality, and drive

prefrontal cortex