A simple method of monitoring licking responses that is compatible with electrophysiological recording

A simple technique is described for the monitoring of drinking behavior that is compatible with concurrent recording of electrophysiological events. The technique involves transduction of the movement of a water spout induced by tongue contact during licking, to an electrical signal via a coil and magnet. An example of this technique is provided with simultaneous recording of hippocampal EEG in a rat. The advantages of this technique include simplicity of construction, low cost, and insensitivity to most extraneous factors in addition to its compatibility with electrophysiological recording.