OpenNeuro ds007703 files returned HTTP 403, leaving the preregistered visual readout test untested

This publication records a preregistered plan to test whether a single 6 mA single-pulse electrical stimulation (SPES) pulse changes image-versus-no-image decoding from 70–170 Hz SEEG power in early visual cortex in two patients. The planned primary measure was the change in ROC AUC between stimulation and no-stimulation trials, with a stated decision rule based on 95% confidence intervals in both patients. The analysis was not run and no brain result is claimed. OpenNeuro’s API listed the ds007703 v1.0.0 file tree, but all attempted file requests returned HTTP 403 AccessDenied, while requests for two other dataset README files succeeded at the same time. The planned code also lacks pulse artifact blanking, the good-contact filter, the bootstrap confidence interval, and the secondary distance-based contrast; its current loader does not read the dataset’s MEF3 recordings. The package preserves the question, plan, draft code, access checks, and provenance of the failed data access.

intracranial EEG · SEEG · single-pulse electrical stimulation · visual decoding · broadband power · brain-computer interface · OpenNeuro · preregistration