The Frontal Lobes and the Hippocampus Flashcards

1
Q

There are both attentional and default networks of brain activity. They have a(n) ____________ distribution in the brain.

A

anticorrelative

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2
Q

Damage to the dorsolateral prefrontal cortex results in ____________________.

A

inability to use intention to modulate attention

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3
Q

The ______________ is activated by conflict monitoring.

A

anterior cingulate cortex

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4
Q

Abulia means ____________.

A

lack of will

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5
Q

The hippocampus is crucial for ______________ memory and _____________ memory.

A

episodic; spatial

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6
Q

The primary input into the hippocampus is the ___________ cortex.

A

entorhinal

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7
Q

The hippocampus is ____________ layers after the subiculum.

A

three

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8
Q

The ____________ is the output portion of the hippocampus.

A

subiculum

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9
Q

The Schaffer collaterals connect the _______________.

A

CA3 and CA1 cortices

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10
Q

Lesions of the DLPFC produce ________________.

A

inability to rely on intention (also called “environmental dependency) and the inability to modulate attention (leading to perseveration)

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11
Q

Lesions to the _____________ produce the lack of response to the Iowa gambling test.

A

VMPFC

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12
Q

The anterior cingulate cortex is Brodmann area ________.

A

24

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13
Q

The anterior cingulate cortex lights up on PET scans when people have ________________.

A

attentional conflict

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14
Q

The DLPFC controls _________________; the VMPFC controls _______________; and the ACC controls ________________.

A

representation, selection, and control of goal-directed behaviors; assessment of the positive and negative aspects of behaviors; attentional conflicts

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15
Q

Describe the layout of the entorhinal cortex, the subiculum, areas CA 1/3, and the dentate gyrus.

A

As you follow the hippocampus through its terminal swirl, you first approach the entorhinal cortex, then the subiculum, then CA 1, then CA 3, and finally the dentate gyrus.

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16
Q

Describe the most common circuit of the hippocampus.

A

The entorhinal cortex sends axons to the dentate gyrus via the perforant pathway. The dentate gyrus sends axons (called mossy fibers) to CA 3. Axons from CA 3 form auto-associations with other CA 3 neurons and send Schaffer collaterals to CA 1. Axons from CA 1 then connect to the subiculum and back to the entorhinal cortex.