“Handtracker” is an integrated software–hardware system for evaluation and analysis of quantitative characteristics of human percipiency of visual and sound stimulus. It includes such visual tests as color campimetry – a figure color management against a color background, a virtual segment inclination management, the “rotated clock” test, the Stroop test, the tests of the sensorimotoric reactions on the visual stimulus. Such sound tests as the tests of the sensorimotoric reaction on the sound stimulus, interstimulus interval measurements, interearthreshold delay gap measurement in the presence of the lateralization, keeping the audio signal frequency. There is also implementation of such classical tests as the test of the emotional disadaptation, the Spilberger – Khanin test, “hospital scale of anxiety and depression” and some other tests. Standard peripheral devices such as keyboard, mouse and joystick as well as an original ultrasonic sensor called handtracker are used to communicate test subject to computer. This sensor held and displaced by the test subject generates the signal depending on his hand position and this signal transmitted to a computer port is used to control some stimulus characteristics: sound tone frequency, images form and color etc. The signal generated by a handtracker reflects not only appropriate actions of the test subject but also unintentional hand movements such as tremor for instance which reflects the test subject ability to adequately react to the stimulus.

The program is developed by “MA–tec” JSC for Nizhny Novgorod State University and Institute of Applied Physics of Russian Academy of Science.

Calibration of the handtracker

The handtracker in action