Table 1. Encoding of motion coherence and social context in lateral frontal pole.

Table shows statistical results for the analysis of ROI responses to the context screen shown in Figure 3C. The model (GLM1) included separate condition regressors for trials where the context was signalled and trials where the context was hidden. The condition regressor for signalled-context trials was parametrically modulated by linear and quadratic terms for coherence (K and K²) and context (C and C²). In addition to the contrast estimates for these parametric modulators, the table also shows the contrast between signalled-context and hidden-context trials. Statistical testing was performing by comparing contrast estimates across subjects to zero using a one-sample t-test. dACC: dorsal anterior cingulate cortex. pgACC: perigenual anterior cingulate cortex. FPl: lateral frontal pole.

ROI	Contrast	Mean	SEM	t	P
dACC	K	0.0646	0.1748	0.3694	0.7147
	K2	0.0293	0.1492	0.1966	0.8456
	C	-0.1930	0.1503	-1.2840	0.2101
	C2	0.3448	0.1736	1.9857	0.0573
	Signalled vs. hidden	0.6045	0.3685	1.6402	0.1126
pgACC	K	0.4427	0.1616	2.7389	0.0108
	K2	0.0008	0.1839	0.0043	0.9966
	C	0.2469	0.1994	1.2384	0.2262
	C2	-0.0878	0.2127	-0.4126	0.6831
	Signalled vs. hidden	0.8477	0.4412	1.9213	0.0653
FPl	K	0.6132	0.1496	4.0981	0.0003
	K2	-0.1349	0.2314	-0.5830	0.5647
	C	-0.1172	0.2118	-0.5535	0.5845
	C2	0.9070	0.1941	4.6741	0.0001
	Signalled vs. hidden	1.2872	0.5155	2.4967	0.0189