Single Tactile Afferents Outperform Human Subjects in a Vibrotactile Intensity Discrimination Task
We simultaneously compared the sensitivity of single primary afferent neurons supplying the glabrous skin of the hand and the psychophysical amplitude discrimination thresholds in human subjects for a set of vibrotactile stimuli delivered to the receptive field. All recorded afferents had a dynamic range narrower than the range of amplitudes across which the subjects could discriminate. However, when the vibration amplitude was chosen to be within the steepest part of the afferent’s...[Show more]
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|Source:||Journal of Neurophysiology|
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