Cortical band median frequency rose with height in FR1 SEEG and fell in HCP resting fMRI after position controls

We tested whether a positive cortical height order of band median frequency transfers between human SEEG and fMRI from separate studies. SEEG used 1-45 Hz and PAFIN used 0.01-0.08 Hz. We used within-person partial correlations after linear position controls, with spacing added for SEEG. In the original three-test plan, FR1 SEEG gave mean r +0.2543 in 73 patients (95% person interval +0.1734 to +0.3326). catFR1 was uncertain in ten patients, and ten PAFIN movie participants gave +0.0094 (-0.0560 to +0.0762). The shared-positive rule failed. A separate plan then fixed twenty unrelated HCP resting records before their spectral outcomes were read. Their mean r was -0.1907 at 0.01-0.08 Hz (-0.2451 to -0.1353) and -0.5456 at 0.01-0.50 Hz (-0.5839 to -0.5048). Individual MNI centroids, volume adjustment, and both time halves retained negative means. A source alternate extraction, added before HCP outcomes, also gave negative orders in both bands. It moved the wide-band mean toward zero by +0.3307 (+0.2845 to +0.3768). Its stated equal-size masks were not independently checked. A correction across all seven direction tests kept FR1 and the four HCP tests below 0.000058. These signals showed opposite orders in the stated cohorts and models. The result does not identify a causal modality effect or establish a shared neural time constant. No new untouched cohort confirmed the reversal as a new hypothesis. We preserve all failures, code, compact inputs, source hashes, person tables, figures, plans, and repeat instructions. Independent calculations agreed. A full repeat matched all twenty output files.

human neuroscience · SEEG · fMRI · spectral median frequency · cortical height · spatial sampling · cross-modal transfer · reproducible research