Plateau signals in three ds006065 closed-loop runs are likely non-neural

In three of nine checked closed-loop (cl) and phase-blind control (clcontrol) runs in OpenNeuro ds006065 v1.0.0, one contact pair per run showed plateaus near +5000 and -5000 stored units. The plateaus occupied 82.4–93.8% of the analyzed samples, with opposite signs on 99.4–100% of plateau samples. Sign changes used linear ramps, many aligned with whole-second sample marks. These features are not physiological; the pairs probably carry an untested control or timing signal. Exclude them from neural analyses and bipolar references, and do not treat their jumps as stimulation artifacts. Only the first 10–40 seconds of three runs were checked; the other runs, stimulation pulse times, and the planned theta-phase analysis were not evaluated.

intracranial EEG · electrophysiology · closed-loop · signal quality · brain-computer interface · OpenNeuro