Unit 4: The Thalamus Flashcards
L1: Awakening and interruption of slow wave EEG tracings occurs via activation of _____-ergic neurons in the reticular activating system.
cholinergic
L1: Opening of T-type Calcium channels in thalamic relay neurons results in characteristic spikes at a frequency of __.
3 Hz
L1: Valproic acid and ethosuximide inhibit __________.
T-type Ca channels
L1: Where does taste information reside in the cortex?
Insular Cortex
L1: Which molecular structure is thought to play a role in absence seizures?
T-type Ca channels
L1: Which thalamic nucleus? Auditory information
MGN
L1: Which thalamic nucleus? Connects with Brodmann Areas 1-3
VPL, VPM
L1: Which thalamic nucleus? Hippocampal and Limbic information
Anterior
L1: Which thalamic nucleus? Somatosensory information (body)
VPL
L1: Which thalamic nucleus? Somatosensory information (face)
VPM
L1: Which thalamic nucleus? Taste information
VPM
L1: Which thalamic nucleus? Visual information
LGN
L2: ________ neurons inhibit thalamic relay neurons via release of GABA.
Thalamic reticular
L2: Direct and indirect effects on the thalamus, especially those affecting sleep and wakefulness, are mediated by _______-ergic neurons from the ________.
Serotonergic; raphe nuclei
L2: Fight or flight behaviors result from _____-ergic neurons in the ________ that release NT into the thalamus.
noradrenergic; locus coeruleus
L2: Thalamic relay neurons have a _______ channel that only conducts at ____-polarized potentials.
T-type Calcium; hyper
L2: Which thalamic nucleus? Connects with Brodmann Area 17
LGN
L2: Which thalamic nucleus? Connects with Brodmann Area 4
VA, VL
L2: Which thalamic nucleus? Connects with Brodmann Area 41
MGN
L2: Which thalamic nucleus? Includes fibers of the anterior limb of the internal capsule
DM, Ant
L2: Which thalamic nucleus? Includes fibers of the posterior limb of the internal capsule
VPL, VPM, (Motor)
L2: Which thalamic nucleus? Inlcudes fibers of the retrolenticular limb of the internal capsule
LGN, Pulvinar (connects to parietal association areas)
L2: Which thalamic nucleus? Inlcudes fibers of the sublenticular limb of the internal capsule
MGN, LGN
L3: ________ neurons convey sensory information received in the thalamus to _______ neurons in layer __ of the cortex via _______ (NT) synapses
Thalamic relay; pyramidal; 4; glutamatergic
