Table 2.

Comparison of visual detection for light and dark stimuli with low or high contrast at different eccentricity ranges

Contrast range (%)	Eccentricity (°)	Contrast polarity	All errors (%)	Mislocation errors (%)	Missed targets (%)	Reaction time (ms)
5–6	5–30	Darks	29.86 ± 21.26	13.16 ± 12.01	16.70 ± 19.71	785.2 ± 160.7
		Lights	28.76 ± 21.12	12.30 ± 11.20	16.46 ± 19.38	778.1 ± 156.5
		p value	p = 0.0337	p = 0.0426	p = 0.7108	p = 0.2250
	5–10	Darks	18.53 ± 16.39	9.84 ± 9.60	8.69 ± 12.69	742.7 ± 140.4
		Lights	16.93 ± 15.67	8.55 ± 8.97	8.38 ± 12.39	734.4 ± 141.0
		p value	p = 0.0493	p = 0.0171	p = 0.8005	p = 0.0765
	25–30	Darks	42.06 ± 22.53	16.96 ± 13.30	25.09 ± 24.16	833.7 ± 177.4
		Lights	42.29 ± 22.52	16.60 ± 12.73	25.68 ± 23.76	829.3 ± 165.0
		p value	p = 0.8045	p = 0.9608	p = 0.3378	p = 0.7115
10–20	5–30	Darks	9.05 ± 10.33	4.41 ± 4.95	4.63 ± 8.33	636.9 ± 105.8
		Lights	12.26 ± 13.24	5.33 ± 5.82	6.93 ± 10.83	658.0 ± 116.3
		p value	p < 0.00001	p = 0.000080	p < 0.00001	p < 0.00001
	5–10	Darks	7.86 ± 8.50	5.18 ± 4.79	2.67 ± 5.52	627.2 ± 96.4
		Lights	8.78 ± 10.65	4.98 ± 4.85	3.80 ± 7.82	637.6 ± 101.8
		p value	p = 0.0523	p = 0.3228	p = 0.000425	p = 0.0060
	25–30	Darks	12.06 ± 14.05	4.44 ± 6.04	7.62 ± 11.97	673.1 ± 118.5
		Lights	17.59 ± 16.89	6.13 ± 7.22	11.45 ± 14.62	705.6 ± 132.2
		p value	p < 0.00001	p = 0.00029	p < 0.00001	p < 0.00001

From left to right, contrast range (measurements averaged across 5–6% contrasts; measurements averaged across 10–20% contrast), eccentricity range (measurements averaged across 5–10°, 15–20°, or 25–30°). Same format as in Table 1.