A multidisciplinary course for advanced physics and biology majors at the undergraduate level is described. The focus of the course is on the problem of how the nervous system receives, processes, and transmits information. Our main goals are to provide recognition of an important, interdisciplinary area of research, to elucidate some of what is presently known about this area, and, finally, to indicate the kinds of questions that must be asked in order to obtain an understanding of neural mechanisms.