| This is
a darkfield photomontage showing cholera toxin B - immunoreactive
optic axons (arrows) emerging from the gerbil optic tract (OTr)
at the level of the rostral superior colliculus (SC). These
axons course medially through the commissure of the superior
colliculus (CSC), descend through the periaqueductal gray, and
ultimately terminate in the serotonergic dorsal raphe nucleus
(DRN) (not shown). Studies in the Fite
laboratory are aimed at understanding the neuroanatomical
organization and functional significance of this unusual retinal-brainstem
projection, as well as determining how light stimulation may
influence the activity of DRN neurons over the diurnal cycle
and during experimentally controlled visual stimulation. |
