Paired good SEEG contacts in five-minute interictal ds004100 1.1.3 files from 36 patients had no exact matches for nonconstant one-second anchors at integer seconds

We tested exact sample reuse in OpenNeuro ds004100 version 1.1.3. The scan used 72 five-minute files and 4,261 good SEEG contact pairs from 36 patients. There were 2,555,996 nonconstant one-second anchors. Each anchor started at an integer second. It was searched at every allowed native sample start in the other file. Both search directions had no exact matches. A second scan allowed a constant digital offset and also found no matches. The quality check found 604 constant anchors, which were excluded from both scans. The package preserves source identities, all result tables, contact hashes, code, and an unchanged public example file. Direct searches, inserted copies, forced hash collisions, and an independent EDF reader checked the method. A negative result applies to these anchors and this snapshot. It does not prove independent acquisition or exclude all transformed or short copies.

SEEG · EEG · sample reuse · exact sequence matching · digital signals · data audit · OpenNeuro