The recorded posterior theta-to-alpha sleep contrast was smaller with open eyes in 120-second ds004902 records from 33 people under mean reference

This study tested both eye states in OpenNeuro ds004902 version 1.0.8. Four raw files were shorter than their headers required. Their complete hashes matched the snapshot. The study excluded three affected people before EEG outcomes. Two more people failed the fixed window rule. The primary analysis used 33 people and seconds 10 to 130 from four records per person. It measured posterior theta-to-alpha power with a scalp mean reference. The two visit-order groups had equal weight. The open-eye minus closed-eye sleep contrast was -3.460 [-5.459, -1.499] dB. Brackets give the 95 percent person-bootstrap interval. The mean recorded sleep contrast was smaller with open eyes than with closed eyes. Eye state was tied to recording order. The result does not isolate a causal effect. Every planned check of the ratio interaction had a negative point estimate. One visit-order subgroup interval included zero. The package preserves code, source hashes, spectra, quality decisions, paired scores, bootstrap indices, and repeat instructions.

electroencephalography · sleep deprivation · eye state · theta-to-alpha power · posterior EEG · paired analysis · OpenNeuro