Fixed EEG and insula fMRI tests did not confirm positive mean time coefficients after count and response time control

The fixed shared positive test did not pass. We tested whether longer target gaps predict larger responses after exact event count and response time control. Separate public studies supplied scalp EEG and BOLD fMRI. Three EEG adults and four MRI adults supplied development. One EEG adult in each stage failed the fixed rules. A local code lock preceded tests in nine other EEG adults and thirteen other MRI adults. Mean coefficients were 0.026842 target response SD and 0.002420 peak BOLD percent per residual timing SD. Their 95% person Student intervals were [-0.037308, +0.090991] and [-0.039755, +0.044596]. Positive counts were 4/9 and 6/13. The fixed shared positive rule did not pass, p=0.451284. Basic target contrasts were positive in every included person. All sensitivity intervals included zero. Count and nuisance terms left median log-gap variance fractions of 0.0483% and 1.1698%. These are schedule limits, not evidence that the brain uses event count. The test does not establish that time effects are absent. Different cohorts, weak timing contrast, source quality, filters and approximate region placement limit interpretation. The package supplies code, compact measurements from all 30 adults, source hashes, all outcomes, figures and repeat steps.

EEG · fMRI · target detection · event history · P300 · timing · reproducibility