Fig. 2: Signal compensation model and experimental validation.
From: Chest-scale self-compensated epidermal electronics for standard 6-precordial-lead ECG
a Schematic of co-front-back compensation. b Schematic of front-end compensation proposed in the previous work. c The potential distribution in dermis without stratum corneum. d The potential distribution in dermis covered with a layer of gold (Au). e The potential distribution in dermis covered with stratum corneum. f The potential distribution in dermis covered with two layers of SC and Au. g Interfacial potential of dermis extracted from c–f. h ECG measured with forearm relaxed. i ECG measured with forearm gripping. j Pearson correlation coefficient (PCC) with respect to grip force. Error bars represent the standard deviation of 3 measurements.
