Pooled high gamma signals had a mean correlation of 0.016 in eight film SEEG records after block mean removal

We measured shared timing in high gamma power during one film. We used eight adult SEEG records from OpenNeuro ds003688, version 1.0.7. Each patient supplied 312 separate one-second windows from 12 blocks. We removed contact block means, standardized the residual power, and took the median across good SEEG contacts. The mean correlation of 28 patient pairs was 0.015842. A one-sided test with 9,999 joint circular shift draws gave p = 0.1148. The test assumes independent circular positions within each patient and block under the null. It does not give clear evidence of shared timing in this pooled signal. It does not establish the absence of local responses. All fixed checks are reported. We used the same records as the cited feature study; this is not an independent cohort test. An independent spectrum calculation reproduced all 315,120 power values from complete raw files with checked hashes. The package contains the fixed plan, input features, source metadata, retrieval code, complete results, figures, and repeat instructions.

intracranial EEG · high gamma power · intersubject correlation · shared response timing · circular shift test · epilepsy · naturalistic film