Table 1.

Log Amplitude Versus Spatial Frequency Slopes for Different Image Sets and Environments

	N	Mean	Median	SD	SE	Lower 95% CI	Upper 95% CI
Berkeley (UCB)
Nature	42	−1.08	−1.04	0.12	0.02	−1.11	−1.04
Mixed urban	20	−1.21	−1.21	0.12	0.03	−1.26	−1.15
Outdoor man-made	60	−1.29	−1.27	0.16	0.02	−1.33	−1.24
Indoor man-made	33	−1.48	−1.54	020	0.03	−1.55	−1.41
Texas (UT)
Nature	308	−0.90	−0.88	0.09	0.01	−0.91	−0.89
Campus (mixed)	90	−1.12	−1.11	0.12	0.01	−1.14	−1.10
Outdoor man-made	171	−1.22	−1.21	0.14	0.01	−1.24	−1.20
Indoor man-made	25	−1.52	−1.55	0.17	0.03	−1.59	−1.45
Botswana (UPenn)
Nature	65	−1.04	−1.02	0.14	0.02	−1.07	−1.00

SD, standard deviation; SE, standard error.