Our method provides a new approach to measuring tactile spatial acuity. Our semiautomated system is easy to operate and can be used to control movement, speed, distance and contact duration. To prepare tactile angle stimuli, use a milling machine
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Presented is the tactile semiautomated passive-finger angle stimulator TSPAS, a new way to assess tactile spatial acuity and tactile angle discrimination using a computer-controlled tactile stimulus system that applies raised angle stimuli to a subject's passive fingerpad, while controlling for movement speed, distance, and contact duration.