Extended Data Fig. 4: PF size and sensory magnitude increase with ICMS amplitude and frequency. | Nature Biomedical Engineering

Extended Data Fig. 4: PF size and sensory magnitude increase with ICMS amplitude and frequency.

From: Evoking stable and precise tactile sensations via multi-electrode intracortical microstimulation of the somatosensory cortex

Extended Data Fig. 4: PF size and sensory magnitude increase with ICMS amplitude and frequency.The alternative text for this image may have been generated using AI.

a, Normalized ratings of sensory magnitude and PF size vs. ICMS amplitude (with frequency fixed at 100 Hz). The size of the PF for each electrode and condition was normalized by the mean PF across conditions. b, Normalized ratings of sensory magnitude and PF size vs. ICMS frequency (with amplitude fixed at 60 µA). Both frequency and amplitude significantly impact perceived size and intensity (2-way ANOVA, p < 0.01 for all). c, The effect of ICMS amplitude and frequency on PF size can be accounted for by the latter’s impact on sensory magnitude (r = 0.77, p < 0.01). Data from participant C1. Lines and shaded areas in A and B represent mean and standard deviation.

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