Table 1 Associations of log-ratio of EEG RP in Social and Toys videos and LR_TBR_,_Social-Toys and RALD.

log(RP_Social/RP_Toys), Region	RALD_Social,Toys		Group *RALD_Social,Toys		Confidence Interval for \(\beta \)coefficient at RALD_Social,Toys
log(RP_Social/RP_Toys), Region	\(\beta \)	p-val (FDRcorr)	\(\beta \)	p-val (FDRcorr)	In TD group		In ASD group
Theta F	0.2304	0.150	−0.3122	0.097	−0.042	0.502	−0.219	0.056
Theta C	0.2950	0.070	−0.3881	0.042	*0.029*	*0.561*	−0.228	0.041
Theta P	0.2911	0.094	−0.4389	0.041	*0.008*	*0.574*	−0.291	−0.005
Alpha F	0.1220	0.527	−0.0027	0.989	−0.232	0.476	−0.060	0.298
Alpha C	0.0108	0.982	0.2416	0.275	−0.328	0.350	0.081	0.424
Alpha P	−0.1715	0.405	0.3648	0.141	−0.537	0.194	0.009	0.378
Beta1 F	−0.3124	0.041	0.4514	0.021	−0.545	−0.080	*0.021*	*0.257*
Beta1 C	−0.1401	0.275	0.2130	0.166	−0.371	0.091	−0.044	0.190
Beta1 P	−0.2460	0.137	0.4019	0.042	−0.520	0.028	*0.017*	*0.295*
Beta2 F	−0.3480	0.204	0.3734	0.228	−0.817	0.121	−0.212	0.263
Beta2 C	−0.2036	0.275	0.1314	0.527	−0.533	0.126	−0.239	0.094
Beta2 P	−0.3355	0.134	0.4758	0.065	−0.701	0.030	−0.045	0.325
LR_TBR F	0.5609	0.041	−0.7426	0.021	*0.156*	*0.966*	−0.387	0.023
LR_TBR C	0.4599	0.042	−0.5829	0.041	*0.093*	*0.826*	−0.308	0.062
LR_TBR P	0.5824	0.042	−0.8842	0.021	*0.115*	*1.050*	−0.538	−0.065

EEG measurements were aggregated to three regions, frontal (F), central (C), and posterior (P). Spectral power was binned into four frequency bands: Theta (5–7 Hz), Alpha (8–10 Hz), Beta 1(11–20 Hz), Beta 2 (21–30 Hz). Associations in bold are significant. In “Confidence Interval” section in case at least one association is significant, for each group positive associations are marked in bold underline with italic, negative associations in bold underline, and no association in bold.

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