In normal awake and slow wave sleep states, the raphe nucleus is releasing serotonin.
In the third group, with two valves, the raphes reached to the mid point of the conjoined leaflet.
A raphe, or false commissure, was present in all 13 cases.
The calcified raphe is seen in both views.
No correlation was found between neurone numbers in any subnucleus of the dorsal raphe and duration of illness.
Special attention was given to the raphe and the leaflets, the calcification of which can lead to stenosis.
There may be a firm fibrous raphe between the leaflets, so that they are attached at the same level.
Forebrain afferents to the rat dorsal raphe nucleus demonstrated by retrograde and anterograde tracing methods.
