Figure 3: In vivo-recorded signal characterizations. | Nature Communications

Figure 3: In vivo-recorded signal characterizations.

From: Graphene-based carbon-layered electrode array technology for neural imaging and optogenetic applications

Figure 3

(a) Average longitudinal 1 kHz impedance values for CLEAR and platinum micro-ECoG devices implanted in the same animal. The error bar represents s.d. of impedance extracted from 16-channel measurement. (b) Baseline signal power spectra for the CLEAR and platinum devices under dexmedetomidine with 95% confidence interval using jack knife resampling. (c) Baseline signal power spectra for a CLEAR device under two analgesic conditions, dexmedetomidine and isoflurane, compared with an awake condition. (d) Sensory evoked potentials recorded by the CLEAR device via electrical stimulation of the sciatic nerve on the hind leg of the rat, contralateral to the array. The device was implanted over somatosensory cortex. Stimuli were applied for 1 ms at 3 and 1.5 mA current levels. The x scale bar, 50 ms; y scale bar, 100 μV.

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