Figure 1.
VTA protein expression, optic fiber placements, and pulse-train parameters. (A) A photomicrogram showing representative EYFP expression with the placement of an optic fiber (dotted line). Abbreviations: cp, cerebral peduncle; IPN, interpeduncular nucleus; SNR, substantia nigra pars reticulata; VTA, ventral tegmental area. (B) Pulse duration, intensity, frequency, and number of a photo-pulse trains varied.
