Fig. 4. Slow timescales are correlated with monkeys’ reaction times.

Average reaction times of monkeys for each session were negatively correlated with the MAP estimates of slow timescales (τ₂) in attend-in condition (left, slope =− 0.16 ± 0.066, mean ± 95% CIs, p = 9 × 10⁻⁶, one-sided F-test, N = 58, R² = 0.62) but not attend-away condition (right, slope = 0.015 ± 0.12, p = 0.79, one-sided F-test, N = 32, R² = 0.69). Each point represents one recording session; symbols indicate different monkeys. Error bars denote ± s.e.m. Gray lines show the estimated fixed-effect parameters (slope and intercept) of the fitted mixed-effects model (Methods, Supplementary Table 1). Because reaction time was tested against 4 hypothesized predictors (two timescales in two attention conditions), a Bonferroni-adjusted significance level was calculated as p < 0.05/4. Source data are provided as a Source Data file.