Two Hurst methods had positive mean cortical order agreement in iEEG and fMRI; fixed clinical transfer tests failed

We tested whether two Hurst methods keep cortical order within human measurements. We also tested whether regional maps transfer between measurements. Public source studies supplied separate iEEG and fMRI cohorts. Development used 33 and 18 people. Fixed raw-map tests retained 41 and 34 other people. Mean pair-order agreement was 77.8% and 62.0%. Their 95% person intervals were 72.2–83.4% and 60.1–63.8%. Both modalities passed the mean and majority tests. Holm p was 1.57e-8 for three claims. A later check used a bound on the mean. It also passed, with Holm p = 0.01519. This check was added after the results. A selected anatomical reversal failed. A later fixed test used regional references from the other modality in disjoint clinical groups. Mean transfer scores were -0.0803 in 23 iEEG patients and -0.0006 in 33 fMRI patients. Their intervals were [-0.1713,0.0106] and [-0.0878,0.0866]. The shared positive transfer rule failed. No full fMRI target set stayed supported in 999 electrical reference-person resamples. Thus no complete reference-resampled MRI interval was available. An exact shared-error example gave perfect method agreement with no latent regional order. Positive method agreement therefore does not establish a shared neural hierarchy. Sparse clinical sampling, source exclusions, short MRI records, unequal filters and cohorts limit scope. No neural cause or clinical benefit is established. The package gives a benchmark tool, seven licensed source tables, source hashes and local plans. It includes all negative scores, figures, code and repeat instructions. Independent scalar checks matched all primary scores.

Hurst exponent · intracranial EEG · fMRI · cortical hierarchy · rank agreement · cross-modal transfer · reproducibility