Skip to main content
. Author manuscript; available in PMC: 2022 Sep 14.
Published in final edited form as: IEEE Trans Biomed Eng. 2017 Aug 29;65(6):1272–1280. doi: 10.1109/TBME.2017.2713647

Fig. 5.

Fig. 5.

Signal-to-noise ratio (SNR) comparison of flexible epidermal electrodes and conventional invasive electrodes. (a) A representative average SSEP recorded with flexible epidermal electrodes (black, an average of 25 evoked trials) and conventional invasive electrodes (orange, an average of 20 evoked trials). We define the noise as the maximum peak-to-peak amplitude within the pre-stimulation period. (b) Signal and noise levels of SSEPs, one for each animal. (Flexible: N = 14; Invasive: N = 8.) The error bars represent the standard error of the mean. (c) The SNR derived from the SSEPs. SNR = (peak-to-peak amplitude of the SSEP) / (peak-to-peak amplitude of pre-stimulation baseline).