Why the study?
Recent studies reported coupling between respiratory phase and the cortical readiness potential, but whether breathing truly modulates neural processes preceding voluntary action remained unclear.
Population
Humans undergoing electroencephalography recordings and simulated data
Comparison
Trials grouped by respiratory phase controlling for movement onset vs original uncontrolled analysis
Design
Re-analysis of original dataset, new independent dataset, and simulated data
Key result
Respiratory phase does not directly modulate readiness potential amplitude during spontaneous behavior, as Bayesian analyses provide evidence for the absence of an effect under natural breathing.
Authors
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No respiratory modulation of readiness potential under natural breathing; challenges prior coupling reports as artifacts and leaves open paced-breathing effects.
Observational
The study refutes previous claims that respiratory phase modulates the cortical readiness potential, demonstrating that the apparent coupling was due to a methodological confound.
Jeay-Bizot et al. (2026) reported an observational. Respiratory phase was evaluated on Cortical readiness potential (RP) amplitude. Respiratory phase does not directly modulate readiness potential amplitude during spontaneous behavior, as Bayesian analyses provide evidence for the absence of an effect under natural breathing.
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