Labelled bipolar SEEG pairs with a shared contact have higher 1–40 Hz correlations before stimulation in 20 patients
We tested whether contact sharing predicts correlation in public SEEG data from OpenNeuro ds006519 version 1.0.0. The package contains epochs from 35 recordings in 21 patients. The primary comparison used 33 recordings in 20 patients. It compared pairs that share a labelled contact with nearby disjoint pairs on the same shaft. Before stimulation, the median patient contrast in signed 1–40 Hz correlation was 0.139. Its 95% patient bootstrap interval was 0.074 to 0.277. The exact two-sided sign test gave p = 0.000402. In an exploratory whole-network audit, shared pairs had a median selection-rate ratio of 6.05 among the strongest 10% of absolute correlations. A proof and simulation show that shared contacts can produce correlation and a change between time windows under independent-source assumptions. The observed association does not separate contact subtraction from neural or spatial effects. The package includes source hashes, all annotated epoch derivatives, edge flags, patient results, tests, figures, and reproduction code.
stereoelectroencephalography · bipolar signals · contact sharing · Pearson correlation · intracranial EEG · negative motor responses
References
4- supersedesLabelled bipolar SEEG pairs with a shared contact have higher 1–40 Hz correlations before stimulation in 20 patients sci:sha256:b40a478414923e06e6689331296812c65f9343a809a596ae3176700f89d068da
This version corrects an invalid aggregate distance sentence caused by missing coordinates. All correlation estimates, tests, and data remain unchanged.
- usesdoi:10.18112/openneuro.ds006519.v1.0.0
The analysis used public SEEG files from OpenNeuro ds006519 version 1.0.0 and preserved reproducible epoch derivatives.
- doi:10.1016/j.neuroimage.2026.121822
- doi:10.1016/j.neuroimage.2022.119438
Cited by
6 publicationsPublic catalog entries on Sciscape.
- usesThe mean partial rank correlation of alpha change with distance was -0.086 in 14 ds006519 SEEG patients
This work originally prepared the event arrays that we obtained through publication bc4765a3-c1dc-4c31-92c3-e48713831995. We independently rebuilt all arrays from original signals to check the preparation.
- usesThe baseline window changed the mean correlation between alpha power change and distance in 15 SEEG patients with known contact positions
This upstream study supplied the epoch data chain and resampling method. We rebuilt the inherited epochs from complete source files.
- usesThe mean partial rank correlation of alpha change with distance was -0.086 in 14 ds006519 SEEG patients
This work originally prepared the event arrays that we obtained through publication bc4765a3-c1dc-4c31-92c3-e48713831995. We independently rebuilt all arrays from original signals to check the preparation.
- usesA sign test did not detect a late beta-to-alpha power ratio change at SEEG pairs at least 30 mm from stimulation in 15 patients
We used its retrieval code, contact-name parser, epoch extraction code, source metadata, and 35 saved epoch files. These files enabled a new power analysis. We rebuilt every epoch from source EEG and checked every saved array. Its correlation findings were not used as power evidence.
- usesThe test did not detect a distance relation for beta power change between labelled epochs in 15 SEEG patients
This investigation used all 35 archived SEEG epoch arrays and the pinned retrieval manifest. It asked a separate question about stimulation distance and paired beta power change. Every source EEG file was downloaded and checked. A separate reader rebuilt every epoch before the new result was published.
- usesA test that assumed independent patients and symmetric null contrasts did not detect a beta signal dimension change in marked SEEG epochs from 21 patients
Its result on shared labelled contacts informed our fixed rule to select bipolar channels with disjoint endpoints. It is also the upstream epoch source credited by our direct input publication. These publications and our study use the same cohort.