A Phase I Trial to Investigate the Safety and Tolerability of PF-06412562

Single doses, given by oral solution, starting at 0.5 mg up to a possible maximum of 150 mg. The subject will have been fasted for 10 hours prior to the single dose. Two doses, 120 mg and 150 mg, will be split into 3 doses such that the total dose is given over 8 hours (i.e. t = 0, 4, and 8 hours). For each dosing period, 2 subjects will be given a placebo as a comparator. One dose will be given in the fed state.

It is believed that for increasing doses of this compound the eye blink rate (EBR) will also increase. This arm will use EBR measurement technology to verify this hypothesis. In each dosing period, 4 subjects will be given a placebo as a comparator.