With affine controls, early motor map residuals lowered mean later error in 14 ECoG patients and 58 fMRI adults; the full rule failed

We tested whether half of an early hand-minus-tongue map residual improves later spatial forecasts. Separate public studies supplied cortical ECoG band power and BOLD fMRI estimates. Affine position and the measured mean movement response defined the baseline map. Three patients and four MRI adults supplied development. A local code lock preceded new endpoint scores in 14 other patients and 58 other adults. Mean added gains were 22.677 and 25.109 calibration-energy points. Their 95% person Student intervals were [13.924,31.429] and [22.443,27.776]. The fixed full rule failed. Its largest one-sided component p was 0.02923584, but the required two-sided ECoG full-skill interval included zero. An added audit over all six locked components supported smaller mean-gain and correlation claims after family correction. It is exploratory and has no new independent confirmation. The full rule required positive residual map correlation and full forecast skill in each modality. All negative people, exclusions and fixed controls remain. A known one-map model gave positive residual gain when the shared-response control was noisy. Thus residual gain does not prove separate neural maps. Reused cohorts, sparse clinical sampling, different movements, unequal measurement filters and stable artifacts limit scope. The package gives code, source versions and terms, all scores, figures, audit checks and repeat steps. Original neural inputs remain external.

motor cortex · ECoG · fMRI · functional mapping · prediction · measurement error