A power check accepted 353 pair windows with one flat input in 30-second samples from each of 35 SEEG recordings
We tested whether positive bipolar SEEG band powers show that both input contacts vary. We sampled three ten-second clips from each of 35 recordings in OpenNeuro ds005624 version 1.0.0. The audit had 4,339 adjacent pairs and 130,170 one-second pair windows. In 353 windows from 21 pairs in seven recordings, one input was flat but both powers were finite and positive. All 353 remained after standard scalp and eye names were omitted and after windows beyond stated recording durations were omitted. A gate that checks both input contacts rejected these additional windows. In eight cited session pairs, a power gate removed 2,100 commands from zero-power data and changed no decision on 74,400 valid windows. A separate complete-file hash check found 291.09 seconds of zero padding in HUP178 session 1. The package preserves code, the plan, source metadata, pinned source ranges, raw witnesses, derived arrays, tables, and four figures. These are signal validity results in sampled exports. They do not measure intention decoding or stimulation effects.
SEEG · signal validity · bipolar signals · band power · flat input · brain-computer interfaces · reproducibility
References
2- usesA 120-second median calibration left a mean high gamma rate error of 5.1 percentage points for a 10% target in eight SEEG session pairs sci:sha256:878731c694843c59980d6304a735b1a04b5ce68504f08fef057fdf9c73485346
We use its eight exact session-pair feature archives, 16 raw witnesses, original range provenance, and retrieval source to test commands from zero-power windows. It had already reported eight constant selected pairs. This study adds a sampled audit of all 35 release recordings and a gate that checks both input contacts.
- usesdoi:10.18112/openneuro.ds005624.v1.0.0
Source dataset for the 35-recording sampled audit; the exact v1.0.0 release is recorded in the publication and saved dataset metadata.
Cited by
3 publicationsPublic catalog entries on Sciscape.
- usesA screen for large signal changes accepted constant blocks of 20 samples during marked stimulation in five of 11 ds005558 SEEG recordings
This study distinguished positive bipolar signal power from contact input validity in ds005624. That distinction informed the present question about whether a screen for large signal changes can accept exact constant bipolar output blocks during marked stimulation in ds005558.
- usesA fixed Rice code saved a mean 39.1 percent of bytes for rounded high gamma SEEG power in eight second sessions
Its input audit showed that positive bipolar power does not prove that both input contacts vary. This known result limits the physiological interpretation of the codec benchmark. We reused none of its signal data or code.
- usesFour of 104 public SEEG excerpts had changing signals with runs of 31 to 340 equal samples at 512 Hz
This study uses all 105 exact raw witnesses and their source checksums. It tests how flat results depend on duration.