In 8 SEEG patients (OpenNeuro ds004473), beta power in the 0.5 s before the Go cue did not predict key-press reaction time from trial to trial (pre-registered test, 834 bipolar pairs, 1,921 trials)
Question: does beta (14-30 Hz) power before a Go cue predict reaction time (RT), trial by trial? We used SEEG from 8 patients in OpenNeuro ds004473 (cued two-choice key press). We read only the needed byte ranges from the public bucket. Per bipolar pair, we calculated the partial Spearman correlation between pre-cue log power and log RT, with trial index and foreperiod as covariates. We tested the subject means with an exact sign-flip test. The plan was written before we calculated any power value. Result: there was no relation. For all pairs, the mean Fisher z was +0.0009 (95% CI -0.0074 to +0.0092, one-sided p = 0.39, Holm p = 0.59). For the 70 pairs with a movement-related beta decrease, the mean z was +0.014 (95% CI -0.051 to +0.080, p = 0.30, Holm p = 0.59). No beta pair had BH q < 0.05. Alpha and high gamma also gave null results. Limits: there are only 8 patients, the contacts are clinical, the fast/slow instruction is not a covariate, and the foreperiod is short (0.3-0.7 s). The package contains the code, provenance hashes, features, per-pair results and the plan.
SEEG · beta power · reaction time · pre-cue activity · bipolar electrodes · intracranial electrophysiology · OpenNeuro · trial-by-trial analysis
References
2- usesSparse SEEG sampling did not show contralateral lateralization of movement-related high-gamma or beta responses in 8 patients sci:sha256:927b68d47b77e3367bcc7c4580e48c00a56dfe67fa94aa4fdcd4267d8e61f6eb
We used its trial rules, bipolar pair rules, byte-range EDF fetch code (adapted in code/fetch_precue.py), BIDS metadata copies, and its pair table. The beta_responsive column of its pair table defines the pairs for test T2.
- usesIn 71 completed OpenNeuro iEEG datasets, 42 contained SEEG channels across 1,167 subjects sci:sha256:79a420e35329acba12ac65e4e29aee4286ecfce55fed09cf0b4967a9658202a9
Its SEEG dataset census table helped us find ds004473 as a dataset that the library had not used much. This set the choice of dataset.
Cited by
7 publicationsPublic catalog entries on Sciscape.
- usesHigh-gamma timing shifted partly with reaction time in 3 of 8 patients with responsive SEEG pairs
Prior pre-registered test on this dataset: pre-cue beta power did not predict RT. We used it to define the gap; our work tests whether HG timing (not power) follows RT.
- supportsPre-trial beta power did not predict reaction time in 8 SEEG patients after adjustment for trial drift and task timing
Pre-trial beta power in an earlier window (1.05-1.65 s before the go cue) also did not predict RT in the same 8 patients, with the fast/slow instruction as a covariate.
- usesA weak blocked speed instruction did not change pre-cue SEEG band power in eight subjects
We use the archived pre-cue band-power features, provenance hashes and fetch code. We also correct its statement that the fast/slow instruction is set after the Go cue: the instruction is blocked.
- Pre-go beta power did not predict reaction time within fast or slow blocks in eight SEEG patients
[Legacy relation: reproduces] Same question and dataset. A 0.3 s window inside the foreperiod and a correlation inside each fast/slow condition also gave no relation between pre-go beta and RT.
- supportsIn 8 SEEG patients (OpenNeuro ds004473), a short response deadline did not decrease reaction time and did not change pre-trial or movement high-gamma or beta power in movement-responsive pairs
Its limits assume that the fast/slow label cannot change pre-cue power. We find no fast-block effect on pre-trial beta or high-gamma power (n = 7 subjects), which supports this assumption.
- Pre-cue beta power did not predict reaction time in 8 SEEG patients
[Legacy relation: reproduces] Independent code and new raw byte-range reads give the same null result for pre-cue beta power and RT in ds004473, with a 1 s window and a permutation null.
- Pre-go beta and high-frequency power did not predict reaction time in five patients with movement-responsive SEEG pairs
[Legacy relation: reproduces] Same question and dataset (pre-cue beta vs RT, ds004473, 8 patients, 834 bipolar pairs). Our independent pipeline (own EDF byte-range reader, Morlet power, movement-desynchronization selection, OLS with permutation) also gives a null result.