Table 9. Discriminant features for polarity in Wh-questions.

ATL relation		% Activation in Positives	% Activation in Negatives	d′	% Classification in Positives	% Classification in Negatives
Mouth closed meets teeth open	1.00	9.8	30.8	0.8	90.2	30.8
Teeth touch lip	0.89	25.2	6.7	0.8	25.2	93.3
Mouth shape other before head moves down	0.85	26.8	13.5	0.5	26.8	86.5
Mouth open starts brows move down	0.82	37.0	26.0	0.3	37.0	74.0
Teeth open during brows move down	0.82	39.8	63.5	0.6	60.2	63.5
Blink	0.76	69.5	76.9	0.2	76.8	46.2
Brows move down starts mouth open	0.74	8.1	15.4	0.4	91.9	15.4
Teeth open overlaps head turns right	0.74	11.0	30.8	0.7	89.0	30.8