A fixed test did not confirm lower neural scores after heat level repetition in 106 EEG and 20 fMRI adults

We tested whether immediate repetition of a heat level lowers a fixed neural score after separate current and previous level effects are removed. Public human studies supplied scalp EEG and BOLD fMRI in separate cohorts. Existing heat-trained readers used 40 EEG and eight MRI fitting people. A local code lock preceded new repetition scores in reserved people. The fixed test retained 106 EEG adults and 20 MRI adults. Mean coefficients were -0.09792 and -0.13677 personal score SD. Pointwise 95% person Student limits were [-0.21517, 0.01934] and [-0.26331, -0.01023]. The shared rule required one-sided person Student and sign-flip tests in both studies. It failed, p=0.05037605. We retain the failure. At the second EEG visit, 113 adults gave +0.02189 [-0.08773, 0.13150]. This is the same cohort. Refitting readers with 500 whole-person resamples gave ranges across zero in both modalities. All fixed controls remain, including an opposite mean for following-level match in MRI. A further MRI study failed the complete-event-history check before a new outcome. No positive cross-modal neural generalization or cause was confirmed. The contribution is a conditional repetition benchmark with permitted inputs, source pins and terms, code, every result, figures and repeat steps. Independent regression checked all primary coefficients. Separate cohorts, different heat durations and measurements, source selection, conditional MRI order and response fitting limit scope.

human neuroscience · EEG · fMRI · pain · heat level repetition · negative result · subject-level inference