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. Author manuscript; available in PMC: 2021 Apr 21.
Published in final edited form as: J Neural Eng. 2020 Dec 16:10.1088/1741-2552/abd460. doi: 10.1088/1741-2552/abd460

Figure 9.

Figure 9.

PAC spacing and signal statistics for human, NHP, and chronically implanted rat summarized across temporal bandpasses. PAC spacings per frequency band based on the observed noise conditions (dots) are placed in the context of the sufficient sampling projected for 0–50% noise (vertical gradients). PAC spacing was within 115 μm (mean) of the ideal case for electrodes that were placed per-session (human and NHP) or were recently implanted (rat week 1). Deteriorated SNR conditions at week 8 of implantation (near the peak of electrode impedance) decreased actual PAC sampling by 365 μm (mean) compared to zero noise. At 50% noise (gradient gray levels), all fields required sampling below 375 μm.