Fig. 2: Quantitative classification of electrotactile via SEP. | Nature Communications

Fig. 2: Quantitative classification of electrotactile via SEP.

From: Interference haptic stimulation and consistent quantitative tactility in transparent electrotactile screen with pressure-sensitive transistors

Fig. 2

a Schematic image showing the positioning of electrodes and the identification of peaks during short-latency SEPs elicited by median nerve stimulation. b SEPs ranging from 13 ms to 30 ms with amplitudes of 3, 6, 9, 12, and 15 mA. c VN20-P23 graph when changing amplitude and classification of the electrotactile intensity, along with the categorization of electrotactile intensity, which is divided into six levels from 0 mA to 15 mA denoted by the numbers 0–5. d SEPs ranging from 13 ms to 30 ms at frequencies of 5, 10, 15, and 20 Hz e, TN20 and TP23 graph when altering the frequency from 5 Hz to 20 Hz, along with the classification of electrotactile texture, which is divided into six levels from 5 Hz to 200 Hz represented by the letters A – F. Data in c and e are presented as mean ± SEM.

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