Figure 18. Diagrammatic representation of a parasagittal view of the rat brain, illustrating the VIP chemistry in fiber systems of the stria terminalis and medial forebrain bundle. VIP neurons (blue) are shown projecting through the stria terminalis from the amygdala to the bed nucleus of the stria terminalis, anterior preoptic regions and accumbens nucleus. VIP neurons (blue) in the central grey and dorsal raphe region are shown projecting through the medial forebrain bundle to these anterior brain regions. Many of these nuclei have reciprocal connections, but they are not shown. VIP binding (red) is shown, with the intensity of the color representing the density of VIP binding. The connections of the smaller VIP neurons (red) of the stratum griseum superficiale of the superior colliculus are not shown.