In the present study, we examined the ability of the orexigenic peptid
e neuropeptide Y (NPY) to stimulate feeding when administered into the
lateral ventricle of baboons. No increase of either meal size or tota
l daily food intake was observed over the dose range tested (1-30 mu g
) These results suggest that, in the baboon, NPY may not be an orexige
n as it is in other species.