Unit 4: The Thalamus Flashcards Preview

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Flashcards in Unit 4: The Thalamus Deck (24):
1

L1: Awakening and interruption of slow wave EEG tracings occurs via activation of _____-ergic neurons in the reticular activating system.

cholinergic

2

L1: Opening of T-type Calcium channels in thalamic relay neurons results in characteristic spikes at a frequency of __.

3 Hz

3

L1: Valproic acid and ethosuximide inhibit __________.

T-type Ca channels

4

L1: Where does taste information reside in the cortex?

Insular Cortex

5

L1: Which molecular structure is thought to play a role in absence seizures?

T-type Ca channels

6

L1: Which thalamic nucleus? Auditory information

MGN

7

L1: Which thalamic nucleus? Connects with Brodmann Areas 1-3

VPL, VPM

8

L1: Which thalamic nucleus? Hippocampal and Limbic information

Anterior

9

L1: Which thalamic nucleus? Somatosensory information (body)

VPL

10

L1: Which thalamic nucleus? Somatosensory information (face)

VPM

11

L1: Which thalamic nucleus? Taste information

VPM

12

L1: Which thalamic nucleus? Visual information

LGN

13

L2: ________ neurons inhibit thalamic relay neurons via release of GABA.

Thalamic reticular

14

L2: Direct and indirect effects on the thalamus, especially those affecting sleep and wakefulness, are mediated by _______-ergic neurons from the ________.

Serotonergic; raphe nuclei

15

L2: Fight or flight behaviors result from _____-ergic neurons in the ________ that release NT into the thalamus.

noradrenergic; locus coeruleus

16

L2: Thalamic relay neurons have a _______ channel that only conducts at ____-polarized potentials.

T-type Calcium; hyper

17

L2: Which thalamic nucleus? Connects with Brodmann Area 17

LGN

18

L2: Which thalamic nucleus? Connects with Brodmann Area 4

VA, VL

19

L2: Which thalamic nucleus? Connects with Brodmann Area 41

MGN

20

L2: Which thalamic nucleus? Includes fibers of the anterior limb of the internal capsule

DM, Ant

21

L2: Which thalamic nucleus? Includes fibers of the posterior limb of the internal capsule

VPL, VPM, (Motor)

22

L2: Which thalamic nucleus? Inlcudes fibers of the retrolenticular limb of the internal capsule

LGN, Pulvinar (connects to parietal association areas)

23

L2: Which thalamic nucleus? Inlcudes fibers of the sublenticular limb of the internal capsule

MGN, LGN

24

L3: ________ neurons convey sensory information received in the thalamus to _______ neurons in layer __ of the cortex via _______ (NT) synapses

Thalamic relay; pyramidal; 4; glutamatergic