Table 2

Linear mixed models analysis of FP_n duration effects on saccade latency

Dataset	Model	Fixed terms	β ± SE	95% CI	p-value	Random terms	σ [ms]
U_short	FP_n.rs1	Intercept	307.495 ± 14.293	[279.498, 335.467]	<2.22 × 10^–16	Residual	51.905
		FP_n	−0.054 ± 0.008	[−0.071, −0.038]	1.00 × 10^–10	Subject	33.571
U_long	FP_n.rs1	Intercept	298.043 ± 20.465	[257.938, 338.114]	<2.22 × 10^–16	Residual	52.322
		FP_n	−0.027 ± 0.008	[−0.043, −0.011]	9.49 × 10^–4	Subject	34.545

Models were fitted using the restricted maximum likelihood method. Fixed and random effect structures were chosen in advance (see Extended Data Tables 1-1 and 1-2). Models were fitted using the Gaussian fit (see Extended Data Fig. 1-1 for the comparison between different distribution choices).
σ, SD of the random terms (subject and residual).