A fixed test did not confirm local sound order in six SEEG patients and two fMRI groups

We tested whether a reference sound map predicts the order of its two closest residual relations in another person. Separate public studies supplied SEEG high-gamma estimates and BOLD fMRI. Two patients and four MRI adults supplied fixed source maps. A local code lock preceded new scores in six other patients, 16 other MRI adults, and eight adults from a separate MRI study. Each map used 128 source-defined nonvoice sounds. Separate estimates gave crossvalidated distances. Additive sound terms were removed. Mean correct local order was 51.95%, 59.86% and 50.00%. Their 95% person Student limits were 45.44–58.47%, 56.72–63.00% and 46.63–53.37%. The shared test failed, p=0.636719. Positive global map cosines of 0.0421, 0.8428 and 0.4182 reproduced the prior SCI result. All-candidate rank AUC was 54.1%, 91.0% and 70.0%. These easier comparisons did not establish local order. Electrical trial-order adjustment raised the mean to 54.3%; scaling rotations lowered it. All checks remain. A valid squared Euclidean construction had global cosine 0.99999999986 and zero correct local order. Thus global map agreement gives no positive lower bound for this local decision. The contribution is a checked test tool, an exact interpretation limit, and a negative human benchmark. Separate cohorts, fixed sounds, clinical sampling, source selection, filters and unknown repeat error covariance limit neural scope. No positive cross-modal local-order result or causal result was confirmed. Code, source pins and terms, all statistical results, figures and repeat steps are supplied. Original neural arrays remain external.

human neuroscience · SEEG · fMRI · sound · representational geometry · local order · negative result