No evidence for modulation of the readiness potential by respiratory phase during natural breathing

Figures

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  Fig 1. Reproducibility of Park and colleague’s (2020) results across different datasets (pooled data across experiments 1 and 2 from Park and colleagues (2020) in A–C with n = 52 participants; our newly collected dataset in D–F with n = 17 participants; and simulated data with no RP-respiration coupling in G–I with n = 50 pseudo-participants; note that B and E do not display a peak RP at the same location as H, see S3 Text for an explanation) and with different binning methods. The left column (panels A, D, and G) contains radial histograms for all pooled respiratory phases at the time of button press across all participants and trials. The empty circles around the circumference represent the participants’ individual means. The full red circles represent the means across participants’ means. P-values for A and D were computed using a one-sided permutation test (Figs 1C, 2C in Park and colleagues 2020). P-values for B, C, E and F were computed using a one-sided permutation test identical to Park and colleagues (2020). In particular, the middle column (panels B, E, and H) shows the analysis of Park and colleague’s (2020) data for readiness potential (RP)-respiration coupling (Fig 3B in…

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  Fig 2. Time course of the readiness potential sorted according to whether t0 (movement onset) occurred during the preferred phase (“in phase”; gray line), or during the least preferred phase of respiration (“off phase”; black line). Shaded regions around signals indicate the SEM. Shaded region from −2 to 0 s indicates the time range used for the Bayesian t test. Time 0 is the onset of button press. A Data from Park and colleagues (2020), n = 52 participants, BF01 = 4.713 (Bayesian paired-samples t test). B Data we collected, n = 17 participants, BF01 = 3.316 (Bayesian paired-samples t test). The data and code used to reproduce this figure are available via OSF and GitHub; some of the original data are available only upon request from the authors of Park and colleagues (2020). See the Data Availability Statement for details.