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Clinical Neuroscience > Cerebrum- White Matter (2) > Flashcards

Cerebrum- White Matter (2) Flashcards

1
Q

Where do white matter fibers convey signals from?

A

Cortex

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2
Q

What is the cerebral cortex?

A

Gray matter on surface of hemispheres

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3
Q

What are granule cells?

A

Small interneurons within cortex

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4
Q

What are pyramidal cells?

A

Output cells for cerebral cortex (projection, commissural, and association fibers)

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5
Q

What is the function of brodmanns area?

A

Cortical mapping and are useful for designating specific locations in the cortex

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6
Q

What does the primary sensory cortex receive information from?

A

Peripheral afferent/dorsal column neuron

Medial lemniscus neuron

Thalamocortical neuron

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7
Q

Where does the primary auditory cortices receive info from?

A

Both cochlea

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8
Q

What is the function of the primary auditory cortices?

A

Conscious discrimination of loudness and pitch of sounds

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9
Q

Where does the primary vestibular cortices receive info from?

A

Vestibulothalamocortical pathway

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10
Q

What is the function of the primary vestibular cortices?

A

Discriminates among head positions and head movements (contributes to perception of vertical)

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11
Q

What is the pathway of the primary visual cortex?

A

Retina to lateral geniculate to primary visual cortex

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12
Q

What is the function of the primary visual cortex?

A

Distinguishes intensity of light, shape, size, and location of objects

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13
Q

What is the function of the secondary somatosensory?

A

Sterogenesis and memory of tactile and spatial environment

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14
Q

What is the function of the secondary visual?

A

Analysis of motion, color, recognition, and visual fixation

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15
Q

What is the function of secondary auditory?

A

Classification of sounds

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16
Q

What does a lesion to the secondary somatosensory lead to?

A

Astereogenesis (cannot determine what an object is with touch)

17
Q

What does a lesion to the secondary visual lead to?

A

Visual agnosia (unable to recognize with vision)

18
Q

What does a lesion to the secondary auditory lead to?

A

Auditory agnosia (unable to recognize sounds)

19
Q

What is the function of the supplementary motor area?

A

Initiation of movement, orientation planning, and sequential movements

20
Q

What is the function of the premotor area?

A

Control of trunk and girdle muscles (anticipatory postural movements)

Clinical Neuroscience (31 decks)

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