Abstract: A device for measuring and diagnosing the galvanic skin response with a modified mouse equipped with a control processor, comprising four touch sensors made by contact electrodes located on the surface of the mouse at the hand grip, and interconnected with each other to form six measuring channels, wherein the mouse is equipped with a signal processor comprising a measuring unit which is divided into sections, the number of which corresponds to the number of measuring channels, where the measuring unit is connected in series with a microprocessor unit and a channel switch such that each section of the microprocessor unit is connected to one of the measuring channels and the channel switch is also connected back to the measuring unit so that each of its sections is connected by a separate input, while the microprocessor unit is further provided with an output for connection to the control computer.