Qubit Systems: GSR SENSOR

The S220 Galvanic Skin Response (GSR) Sensor measures the psycho-galvanic reflex. This reflex generates a change in skin conductivity during periods of stress, excitement or shock. The GSR sensor monitors skin conductivity between two reusable electrodes attached to 2 fingers of one hand. While the subject is at rest, a steady background signal will be monitored by C901 Logger Pro software on the computer screen. It is also possible to obtain an audible signal. The subject may then be stimulated in different ways and the degree of stimulation measured graphically.

The GSR sensor can be used in bio-feedback studies in which the subject learns to control emotional state voluntarily by using relaxation techniques. This is often done with closed eyes while listening to the audible signal from the GSR sensor. The pitch of this signal declines as skin conductivity decreases, allowing the subject to concentrate on, and monitor, the degree of relaxation. Alternatively, the subject can watch the graphical response on the computer screen while using relaxation techniques such as controlled breathing. Relaxation techniques with eyes open and eyes shut can then be compared.

As well as relaxation studies, the GSR sensor can also be used to determine the types of stimuli that excite various subjects. For example, the stimulatory or relaxing effect of different colours can be assessed, as well as the effects of various patterns and images.

All human electrophysiology and human respiratory monitoring
products produced by Qubit Systems Inc. are not appropriate for medical or clinical applications.