Evaluating Tonic and Phasic Variations for User Perception by Moisture Detection on Fingerprint

 

Fatima Isiaka 

Ken E Ehimwenma 

Sopha Al Sharji

 

Abstract 

 

Users often experience wetness cursed by stimuli using their hands, and little is known of how this sensitivity in the fingers to moisture is released and the mechanisms underlying this sensory function. This paper, therefore, is aimed to quantify the minimum moisture content required to detect wetness in the user’s first two fingers on the touchpad, the moisture detection threshold and assessment are modulated by the body temperature. The participants were asked to rate the wetness and the sensations based on subjective reports to identify areas of tonic and phasic changes in their physiological response based on a visual analog scaling. The MoistureC detection threshold at a temperature similar to ((3.5) × 10oC), and this temperature reduces at ((2.5) × 10oC) and increases at ((3.7) × 10oC) for warmer conditions similar to stress and relaxed mood of the participants. At neutral settings over the contact area, the hotness in moisture content is similar to the maximum normal body temperature ((3.6) × 10oC). The differences in threshold (baseline) are reflected by the magnitude estimation data that were used for analysis.

 

Keywords: Skin conductance response, Skin temperature, Moisture content, Baseline, Touchpad, User Perception

 

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