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Fig. 7 | Journal of NeuroEngineering and Rehabilitation

Fig. 7

From: A high-performance 8 nV/√Hz 8-channel wearable and wireless system for real-time monitoring of bioelectrical signals

Fig. 7

(a) Step response, (b) impulse response and (c) response to a biphasic pulse, which characterize the proposed instrument’s AFE. (d) The step response of the AFE, which initially exhibits an undershoot of 250 μV, is free of ringing (there is no decaying oscillatory activity after the undershoot). (e) The impulse response of the AFE exhibits a relatively fast settling. (f) The response of the AFE to a biphasic pulse exhibits a significantly faster settling in comparison to its corresponding impulse response (shown in (e)). In all cases, the output voltage (black line) is presented after removing the gain of 60 dB that is applied by the biopotential recording AFE

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