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. Author manuscript; available in PMC: 2022 Jan 27.
Published in final edited form as: J Neural Eng. 2021 Feb 5;18(1):10.1088/1741-2552/abc7f0. doi: 10.1088/1741-2552/abc7f0

Figure 4.

Figure 4.

(A) A raw 1 second example trace of the Intan RHD2132 amplifier and OpenEphys data acquisition system noise floor [42]. Mean RMS noise floor (± std.) for all 5, 10 second long, recordings is overlayed as a dotted black line. (B) A raw 1 second example trace of the NeuroDAC noise floor recorded through the Intan/OpenEphys acquisition system. Mean RMS noise floor (± std.) for all 5, 10 second long, recordings is overlayed as a dotted black line. (C) A comparison of the estimated noise floor density between the data acquisition system with and without the NeuroDAC attached. The theoretical estimation of the noise density is given as a black dotted line. An expanded view of the frequency range from 0 to 250 Hz (blue highlighted region) is shown on the right.