Simultaneous space threshold
The smallest distance between two points that can be haptically perceived as such is called the simultaneous space threshold . These distances are determined with the help of the tips of a caliper.
Simultaneous space thresholds in different body regions
The higher the density of mechanoreceptors , the higher the spatial resolution of the sense of touch and at the same time the smaller the simultaneous spatial threshold. According to a model by Robert F. Schmidt and Hans-Georg Schaible 2001, the highest values of about 60 mm are on the back and thigh. At the fingertips and on the tongue, these are only around 1.5 to 3 mm.
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