The Frontal Lobes and the Hippocampus Flashcards Preview

MS2 - Nervous System > The Frontal Lobes and the Hippocampus > Flashcards

Flashcards in The Frontal Lobes and the Hippocampus Deck (16):
1

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

anticorrelative

2

Damage to the dorsolateral prefrontal cortex results in ____________________.

inability to use intention to modulate attention

3

The ______________ is activated by conflict monitoring.

anterior cingulate cortex

4

Abulia means ____________.

lack of will

5

The hippocampus is crucial for ______________ memory and _____________ memory.

episodic; spatial

6

The primary input into the hippocampus is the ___________ cortex.

entorhinal

7

The hippocampus is ____________ layers after the subiculum.

three

8

The ____________ is the output portion of the hippocampus.

subiculum

9

The Schaffer collaterals connect the _______________.

CA3 and CA1 cortices

10

Lesions of the DLPFC produce ________________.

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

11

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

VMPFC

12

The anterior cingulate cortex is Brodmann area ________.

24

13

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

attentional conflict

14

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

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

15

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

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.

16

Describe the most common circuit of the hippocampus.

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.

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