Table 1.

Mean sizes (% of the surface area) of interest areas for each video. Please note that the interest area sizes varied across time. The eyes and mouth interest areas were subsets of the face area

Activity	Interest area size (%)
	Face	Eyes	Mouth	Hands
Monologue	3.64	0.26	0.15	2.61
Manual action	6.84	0.44	0.2	7.29
Misdirection	4.06	0.38	0.17	3.99