Thalamic Nuclei Flashcards
1
Q
Ventral Posteromedial Nucleus (VPM)
A
- INPUT: trigeminothalamic system
- OUTPUT: Somatosensory cortex
- VASCULATURE: Inferolateral vessels (PCA)
- FUNCTION: face somatosensory
2
Q
Ventral posterolateral nucleus (VPL)
A
- INPUT: STT, DCML
- OUTPUT: Somatosensory cortex
- VASCULATURE: Inferolateral vessels (PCA)
- FUNCTION: Somatosensory from limbs, trunk
3
Q
Ventral lateral nucleus (VL)
A
- INPUT: crossed cerebellar deep nuclei
- OUTPUT: Primary motor cortex
- VASCULATURE: Inferolateral vessels (PCA)
- FUNCTION: neuron firing timing
- LESION (to cerebellum): ipsilateral motor control
- (corticospinal tract crosses in medulla)
4
Q
Ventral Anterior Nucleus (VA)
A
- INPUT: BG (GPi, SNr)
- OUTPUT: Premotor cortex
- VASCULATURE: Inferolateral vessels (PCA)
- FUNCTION: motor initiation
- LESION (to BG): contralateral motor deficit
- Because corticospinal tract crosses in medulla
5
Q
Medial Geniculate Nucleus (MGN)
A
- INPUT: inferior colliculus
- OUTPUT: auditory cortex
- VASCULATURE: PChA
- FUNCTION: Auditory input
6
Q
Lateral Geniculate Nucleus (LGN)
A
- INPUT: Optic tract
- OUTPUT: V1 (primary visual cortex)
- VASCULATURE: PChA
- FUNCTION: contralateral visual field
7
Q
Anterior Nucleus of Thalamus (AN)
A
- INPUT: Hippocampus via mammillothalamic tract
- OUTPUT: Cingulate gyrus
- VASCULATURE: Tuberothalamic vessels (PCA)
- FUNCTION: Memory
- LESION: Korsakoff’s
8
Q
Mediodorsal Nucleus
A
- INPUT: amygdala, olfactory cortex, ventral pallidum
- OUTPUT: Prefrontal cortex, limbic system
- VASCULATURE: Paramedian vessels of PCA
- FUNCTION: Attention, planning, active mem
- LESION: Apathy, memory changes, perseveration
9
Q
Pulvinar
A
- INPUT: Retina, superior colliculus, STT, association cortices
- OUTPUT: Association cortices
- VASCULATURE: PChA
- FUNCTION: Integration of sensory stim
- LESION: Visual perception, pain perception, language processing
