From SFN’s Winter 2011 issue of Neuroscience Quaterly:

Females represent 50 percent of undergraduate neuroscience majors, 54 percent of predoctoral trainees, 37 percent of postdoctoral trainees, and 44 percent of non-tenure-stream faculty members. In contrast, female represent only 29 percent of tenure-stream faculty members and 26 percent of full professors.

Not cool, men. Stop using us. Oh, by the way:

Most tenure-stream faculty members in undergraduate programs in U.S. institutions are Caucasian (92 percent), male (71 percent) and American citizans (96 percent). The median number of tenure-stream faculty positions is 8 per program, and the median number of undergraduate students with majors in neuroscience is 110 per program.

Although,

Only 22 percent of the incoming graduate students had an undergraduate major in neuroscience or behavioral neuroscience. Other common majors were biology (23 percent), psychology (18 percent), and chemistry (7 percent); an additional 12 percent had dual majors that included one or more of these disciplines.

Ha! That leaves a lot of % of way more interesting majors!