Figure 4. Intravenous administration of Hcrt-1 (3 μg kg⁻¹) has no effect on glutamate and GABA levels in the cerebellar cortex, a region that lacks significant Hcrt innervation.

Glutamate and GABA levels in the cerebellar cortex from 30 min before to 90 min after intravenous administration of Hcrt-1 (3 μg kg⁻¹). The arrow indicates the point of injection, the continuous line shows glutamate levels (n = 7) and the broken line shows GABA levels (n = 5). All values are means ±s.e.m.