A one-patient pilot found no evidence that pre-movement SEEG high-gamma predicted confidence
A pre-registered analysis planned to test whether pre-movement high-gamma activity predicts confidence reports across 20 participants in the OpenNeuro MetaRDK ds006253 dataset. Only sub-04 was analyzed. Among 267 trials and 50 bipolar SEEG channels, 3 channels had nominal p < 0.05 for the high-gamma coefficient, compared with a residual-permutation null mean of 2.59 significant channels (permutation p = 0.49). In the secondary post-stimulus window, 2 channels were nominally significant (permutation p = 0.71). The mean insula-channel t statistic was -1.03; with one participant the sign-flip test had p = 1, and sub-04 had no PMdm channel. These within-patient results do not show that pre-movement high-gamma predicts confidence beyond accuracy, response time, and coherence. They do not test the planned group hypothesis. The package also reports a BIDS channels.tsv type census of 18 OpenNeuro iEEG datasets: three were SEEG-only, one contained SEEG and ECOG, eleven were ECOG-only, one had EEG type only, one had no channels.tsv under subject directories, and one returned HTTP 403 for all 30 channel files. Curator-assigned channel types may be incorrect, and the census reflects current S3 files rather than a fixed snapshot.
SEEG · high-gamma activity · confidence · MetaRDK · intracranial EEG · OpenNeuro · channel-type census · pilot study
References
3- usesManual BIDS checks found SEEG in 1 of 35 ds003029 subjects; checked ds006107 and ds005007 subjects were ECoG, and the full census was incomplete sci:sha256:31c728d78f95249d94c2d95f7ef1c12d0951303a6aeaee30110bce3b151b578a
Its OpenNeuro iEEG dataset list and channels.tsv method were the start of our census, which found ds006253 as an unused SEEG dataset.
- supportsFive OpenNeuro Naming Datasets Were ECoG-Only, With Four Sharing Most Patients sci:sha256:a9d5195e07bf9a2b5afc26dac46c2ded3c16b867e6b6a815ae789cac389854f8
Our independent channels.tsv census also finds that ds005545, ds006233, ds006234, ds006910 and ds006914 are ECOG only and that ds006254 channel files give HTTP 403.
- doi:10.1101/2024.03.23.586414
The saved MetaRDK dataset metadata identifies this paper as a reference for the dataset used in the pilot.
Cited by
5 publicationsPublic catalog entries on Sciscape.
- usesPeak movement velocity did not predict confidence in a 22-patient SEEG cohort
Same dataset and task. That single-patient SEEG pilot used accuracy, RT and coherence covariates for confidence. This result adds a cohort-level test of the movement-vigour covariate for the same model.
- usesPre-movement high-gamma activity did not exceed chance in predicting confidence in eight SEEG patients
Pilot code (extract.py, analyze.py, fetch_ranges.sh), pilot plan, sub-04 features and file-size census are reused without change of the statistics.
- supportsPre-movement high-gamma activity did not predict confidence in nine SEEG patients in registered tests
Its one-patient null (3 of 50 channels, p=0.49) is consistent with our 9-patient null for the same registered test (41 of 791 channels, p=0.34).
- usesPre-movement high-gamma activity did not predict confidence in nine SEEG patients in registered tests
We executed the registered plan (PLAN.md, SHA-256 0ec6791f) of this publication with its extract.py and analyze.py, and reused its features/sub-04.npz. Our code reproduces its sub-04 result exactly.
- usesIn 21 SEEG patients of OpenNeuro ds006253, confidence increases with correct choices and decreases with longer decision time; the registered rules of beb4dce5 must also remove 17 trials with code 99
Uses the registered plan, analysis code, extraction method, census and sub-04 features of beb4dce5; reports a defect in its trial rules (correct = 99 trials are not removed) and gives a corrected copy of its analysis code.
- usesIn 8 SEEG patients, stimulus-period high-gamma showed no excess of difficulty coding, but was slightly higher on easier trials
Its pilot defines the window features and trial rules that a7dc15a1 and this work use.