A fixed auditory response fit did not pass a shared repeat error test in six SEEG patients and 16 fMRI adults

This sensitivity study builds on a public four-component auditory repeat-fit benchmark. Separate studies supplied SEEG high-gamma amplitude and BOLD fMRI for 165 sounds. Two patients and four MRI adults supplied development. A local lock fixed amplitude scale 0.25 before new endpoints in six other patients and 16 other MRI adults. Mean error gains over one direction were 1.3938 and 7.9936 points of training energy. Person 95% Student limits were [-0.0070,2.7947] and [6.9604,9.0268]. Five of six patients and all MRI adults had positive gains. The shared rule failed because the SEEG lower limit crossed zero. Added MRI gains do not supply missing electrical confirmation. A repaired search found the closest prior study after the new endpoints. An exploratory replay matched its six original SEEG scores exactly. Subtracting each trial's 100 ms pre-onset mean reduced that prior pipeline's mean normalized gain from 2.7422 to 0.2712 points of test energy, a 90.11% decrease. All six adjusted gains remained positive. With fixed coordinates, baseline subtraction raised target energy 4.24 to 8.20 times and left mean added gain uncertain. These changes do not select a correct baseline or measure lost neural information. Fixed controls, joint subject-and-sound refits, and all negative outcomes remain. A second exact rank-one noise example extends a known interpretation limit to the changed fit. An earlier fine-identity plan stopped before neural scores when its order check failed. Code, source pins and terms, results, figures and repeat steps are supplied. Different cohorts, source selection, repeat dependence and measurement filters limit scope. No causal or shared biological rank claim is established.

human auditory cortex · SEEG · fMRI · repeat prediction · low-rank approximation · negative result · measurement confounds