Reference changes gave larger average SEEG autocorrelation half-width differences than rest block changes in nine selected adults at 0.5 to 40 Hz
We tested whether a reference change affects SEEG autocorrelation half-width more than a change between two separate rest blocks. We used public OpenNeuro ds003688 version 1.0.7 inputs from nine selected adults with epilepsy. The analysis used 578 good contacts, 518 adjacent pairs, two 50-second blocks, and a 0.5 to 40 Hz filter. We compared bipolar width with the geometric mean width of its two common-average parents. Each adult score was the median of paired reference distance minus block distance. The mean adult score was 0.1094 log2 units. The adult bootstrap 95 percent interval was 0.0525 to 0.1569. The two-sided sign-flip p value was 0.01172, under a sign-symmetric zero null. Eight adults had positive scores. All planned checks had positive mean scores. The five adults with at least 20 contacts had a p value of 0.0625. Independent and exchangeable adults are assumed for the bootstrap. The result concerns measured signal widths in this selected sample. It does not establish a neuronal time constant. The archive contains fixed inputs, source versions and hashes, code, results, figures, checks, and retrieval instructions.
stereoelectroencephalography · SEEG · autocorrelation · half-width · reference · common average reference · bipolar reference · rest · signal processing · time scale
References
5- usesBipolar reference changed linear ECG prediction skill in both directions compared with common average reference in nine adult rest SEEG records sci:sha256:0ab9025de2c32e339ac12889a218c711c42b734b2f0263ba9eb03b05afa008c3
We used its exact nine reduced SEEG input arrays, fixed contact pairs, source metadata, selection audit, source provenance, and retrieval code. These inputs enabled a new comparison of reference and rest block differences in autocorrelation half-width. We did not use its ECG prediction results.
- usesdoi:10.18112/openneuro.ds003688.v1.0.7
The analysis used the exact reduced SEEG inputs from OpenNeuro ds003688 version 1.0.7.
- doi:10.1038/s41597-022-01173-0
- doi:10.7554/eLife.61277
- doi:10.1038/s42003-021-01785-z
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesMean theta log power autocorrelation at 0.5 to 2 seconds exceeded phase controls in nine adults' rest SEEG
The prior voltage correlation width study motivated a separate power correlation test in the same adults. We tested power against spectrum controls. Its width scores were not used.
- usesA contact metric preserved 500 ms ridge lag dependence across equivalent contrast bases in 18 SEEG records from nine adults
Its reference and time width comparison motivated this coordinate audit. The new comparison retains the same contrast space to isolate the ridge coordinate effect. Its width values and data arrays do not enter the new scores.