The intralaminar nuclei are thin groups of neurons embedded within the Y-shaped band of white matter (internal medullary lamina) that divides the thalamus. The largest is the centromedian nucleus.
| Location | Within the internal medullary lamina of the thalamus |
|---|---|
| Parts |
|
| Connections |
|
| Blood Supply | Posterior cerebral artery (thalamoperforating and thalamogeniculate branches); Posterior communicating artery |
Help maintain arousal and attention and link the basal ganglia with the cortex; also relay pain-related signals.
Damage to these nuclei on both sides can cause reduced consciousness or akinetic mutism. The centromedian nucleus is a deep brain stimulation target for some types of epilepsy and Tourette syndrome.
Bilateral thalamic infarction causing drowsiness, memory loss and gaze problems.
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