Estimating Human Tactile Resolution Limits for Stimulator Design
نویسنده
چکیده
To build a better stimulator display for the human tactile system, it is necessary to quantify the performance of that system. A fundamental component of a tactile stimulator system is an elastic layer which functions as an anti-aliasing filter. Psychophysical experiments performed measure the ability to statically perceive gratings through an intervening layer of elastic material. Spatial threshold levels are established for the subjects, and a modulation index is determined for those levels based on predicted sub-surface strain using a half-plane elastic model. Hysteresis effects observed during the tests are believed to reduce discrimination.
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