The reticular nucleus is a thin shell of inhibitory neurons wrapped around the outer side of the thalamus. Fibres travelling between the thalamus and cortex pass through it and give it branches.
| Location | Lateral surface of the thalamus, between the external medullary lamina and the internal capsule |
|---|---|
| Parts |
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| Connections |
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| Blood Supply | Anterior choroidal artery; Posterior cerebral artery branches |
Acts as a gatekeeper, filtering information flowing from the thalamus to the cortex and generating sleep spindles.
Its rhythms generate the 3 per second spike-and-wave pattern of childhood absence seizures, which drugs such as ethosuximide reduce. It is also studied in attention and schizophrenia research.
Brief lapses of awareness caused by abnormal thalamocortical rhythms involving the reticular nucleus.
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