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NETTER - Neuroscience Flash Cards

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Thalamic Nuclei

1. Anterior nuclei

2. Ventral anterior (VA) nucleus

3. Ventrolateral (VL) nucleus

4. Ventral posteromedial (VPM) nucleus

5. Ventral posterolateral (VPL) nucleus

6. Pulvinar

7. Lateral geniculate body (nucleus)

8. Medial geniculate body (nucleus)

9. Internal medullary lamina

10. Medial dorsal nucleus (MD)

11. Lateral posterior (LP) nucleus

12. Ventral posterolateral (VPL) nucleus

13. Reticular nucleus

14. Ventral posteromedial (VPM) nucleus

15. Centromedian (CM) nucleus

Comment: Many of the specific thalamic nuclei receive

topographically organized information from their sources of input

(e.g., sensory lemniscal channels for specific sensory nuclei for

somatosensory, trigeminal sensory, auditory, and visual processing).

The thalamus is not merely a relay station to the cortex; it extracts

information from its input and sends it to the associated region of

cerebral cortex in discrete patterns of projections. The cortex, in

turn, can act through interneurons of the thalamus to fine-tune its

own input that it is receiving from the thalamus. With many thalamic

nuclei, damage to the nucleus itself produces symptoms similar to

damage to its associated cortical region. This is also the case for

nuclei such as MD, interconnected with regions of frontal cortex.

Overview of the Nervous System See book 3.19

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