Fig. 4: Index distal phalanx sensitivity.
From: Bioinspired adaptable multiplanar mechano-vibrotactile haptic system

a Sensitivity across areas and BAMH's stimuli frequencies. The median is highlighted with a notch,  + are outliers, and each box’s limits are the second and third quartiles. b Linear correlation between the result obtained using the BAMH system and von Frey hairs (handheld device) across different areas of the fingertip. Light blue shading emphasizes coefficients exceeding 0.5, with increasing color intensity indicating proximity to a correlation coefficient of 1 (where 1 represents direct relationship of the variables).