Lecture 13 - Thalamus Flashcards Preview

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Flashcards in Lecture 13 - Thalamus Deck (11):
1

Thalamus

-connects just about every brain structure with just about every other brain structure
-relays and processes information
-particularly important for most of the senses

2

Anterior nucleus

-Anterior division
-input from limbic system
-outputs to cingulate gyrus --> hippocampus (entorhinal)
-emotion, cognition

3

Lateral dorsal nucleus

-Lateral division
-input from limbic system
-outputs to cingulate gyrus --> hippocampus (entorhinal)
-emotion, cognition

4

Mediodorsal nucleus

-Medial division
-input to olfactory cortex and spinothalamic tract
-output to olfactory inputs go to insular and orbitofrontal cortex
-cognition (memory), emotion, flavor

5

Pulvinar and Lateral posterior nuclei

-Lateral division
-inputs from many sensory systems
-output to association cortex
-attention to visual and other stimuli
-lesion causes hemineglect

6

Ventral later and ventral anterior nuclei

-Ventral division
-inputs from cerebellum, globus pallidus, substantia nigra
-output to cortical areas 4 and 6
-motor function (both association and primary)

7

Ventral posterior, VPL, VPM

-Ventral division
-inputs from medial lemniscus, spinothalamic tract, trigeminothalamic tract, solitariothalamic tracts
-outputs to somatosensory cortices (3, 1, 2) and some area 4, as well as taste to insular cortex
-pain+temp+somatosensation and flavor

8

Medial geniculate

-Ventral division
-inputs from inferior colliculus
-outputs to auditory cortex (areas 41 and 42)
-hearing

9

Lateral geniculate

-Ventral divison
-inputs from retinal ganglion cells
-outputs to visual cortex (area 17)
-vision

10

Centromedian

-Intralaminar divison
-inputs from Globus Pallidus and Nigra, spinal cord (reticular formations)
-output to motor cortex and striatum
-ascending arousal system

11

Blood supply

tuberothalamic artery
posterior choroial artery
paramedian artery
thalamogeniculate artery
-branches from P. comm, PCA and MCA