Reticular Formation and the Brainstem RAS

The reticular formation is a network of gray and white matter in the brainstem. It extends from the medulla to the midbrain. Its nuclei are grouped into three main regions: raphe nuclei, medial nuclei, and lateral nuclei.

The raphe nuclei lie along the midline of the brainstem. They are best know...

The reticular formation is a complex network of gray and white matter spread across the core of the brainstem.

It is roughly divided into three paired columns of nuclei — the median or raphe, the medial, and the lateral — connected to the limbic system, different parts of the brain, and the spinal cord.

The reticular formation has ...