Table 2.

Means (standard deviations) of general head movement measures at encoding for landscape and fractal images.

Measure (degrees visual angle)	Landscapes	Fractals
Experiment 1 (square fixed frame)
Mean head shift amplitude	1.00 (0.78)	1.03 (0.90)
Central tendency	15.30 (4.70)	15.87 (4.46)
Experiment 2 (circular frame)
Mean head shift amplitude	1.00 (0.77)	1.01 (0.73)
Central tendency	9.37 (3.12)	9.45 (3.14)
Experiment 3 (square rotating frame)
Mean head shift amplitude	1.98 (0.93)	1.94 (0.99)
Central tendency	11.96 (3.06)	12.19 (3.12)