Extended Data Fig. 7: Chronic neuronal activity recordings in macaque monkey primary motor cortex by a 256-channel ki-MEA.
From: Flexible kirigami microelectrode arrays for neuronal activity recordings in non-human primate brains

a, Action potential traces recorded by the 256-channel ki-MEA at 36 weeks post implantation. Scale bars, 100 ms (horizontal) and 500 μV (vertical). b, c, Example wide-band and action potential traces. Scale bars, 100 ms (horizontal) and 500 μV (vertical). d, Waveforms of simultaneously recorded M1 neurons. Scale bars, 1 ms (horizontal) and 500 μV (vertical).