A baseline age slope reduced mean squared error for later normalized posterior 8–13 Hz EEG mean frequency in 207 ds005385 v1.0.3 adults with eyes closed

We tested a fixed age rule in 207 repeat adults from OpenNeuro ds005385 v1.0.3. The target was normalized posterior 8–13 Hz EEG mean frequency from two minutes with eyes closed before tasks. Each age slope used only first visits from other people and included recorded sex. The rule added slope times the visit-year gap to the first measurement. Mean squared error fell from 0.064509 to 0.061555 Hz squared. The reduction was 4.6%, with a descriptive 95% interval of 0.6% to 8.5%. We used 20,000 paired-person bootstrap draws and refitted each age model. The checks for the grid maximum, first minute, and zero late-trigger flags did not resolve a benefit. The result does not identify biological aging or prove that the two age rates are equal. The package supplies the local plan, spectra, source hashes, code, predictions, all bootstrap statistics, and reproduction instructions.

EEG · spectral centroid · age prediction · longitudinal data · bootstrap · OpenNeuro