Like a mental weather map or traffic update, the Biomapping project visualizes emotional data within cities. Christian Nold, a London-based artist, used GPS coordinates coupled with a device that measured participant's galvanic skin response as they walked through a designated urban area. Galvanic skin response gauges emotional arousal by measuring the electrical resistance of the skin. Emotions GSR usually picks up include: fear, anger, startle response, orienting response and sexual feelings.

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