Tags: Anatomical Structure, Brain.
The nucleus incertus is a region of the rodent pontine brainstem just ventral to the 4th ventricle. The nucleus incertus has a bilateral structure which sits near the brainstem and is often also called ‘nucleus O’. It consists of mostly ascending GABAergic projection neurons which innervate a broad range of forebrain regions involved in behavioural activation and the response to stress.