An easily constructed biphasic constant-current stimulator for intracranial self-stimulation.

This paper describes a biphasic, constant-current stimulator that is appropriate for intracranial self-stimulation (ICSS) studies. The stimulator is made from components that are readily available in electronic supply stores at low cost. A printed circuit board has also been designed for the stimulator which facilitates its production. The device has proven extremely reliable in various ICSS paradigms.