The dorsal longitudinal fasciculus is a thin fibre bundle that runs from the hypothalamus down through the periaqueductal grey and floor of the fourth ventricle. It links the hypothalamus with autonomic centres in the brainstem.
| Location | Periventricular grey matter from the hypothalamus through the midbrain to the medulla |
|---|---|
| Parts |
|
| Connections | |
| Blood Supply | Posterior cerebral and basilar artery branches |
Carries hypothalamic control to brainstem centres for salivation, heart rate, gut function and other autonomic activity.
Rarely damaged alone but contributes to autonomic disturbances in brainstem lesions.
Disturbed heart rate, blood pressure or gut control from damage to descending autonomic pathways.
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