intraventricular injections of substance p , trh and somatostatin were administered to rats rendered hypokinetic by bilateral microinjections of 6-hydroxydopamine into the anterolateral hypothalamus , only substance p in a dose of 0.30 micrigrams/rat significantly increased motor activity as determined by photocell counts in a 5 min test session immediately after administration of the peptide .
C0037659
somatostatin
C0020663
hypothalamus