Statistical Properties of Foveal CFF as Function of Age, Light/Dark Ratio, and Surround

Richard G. Domey

doi:10.1364/JOSA.54.000394

Journal of the Optical Society of America
Vol. 54,
Issue 3,
pp. 394-398
(1964)
•https://doi.org/10.1364/JOSA.54.000394

Statistical Properties of Foveal CFF as Function of Age, Light/Dark Ratio, and Surround

Richard G. Domey

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Richard G. Domey, "Statistical Properties of Foveal CFF as Function of Age, Light/Dark Ratio, and Surround," J. Opt. Soc. Am. 54, 394-398 (1964)

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Abstract

In a sample of 108 male subjects, age 13 through 89, foveal CFF was measured using 10 light/dark ratios, 2/98 to 98/2, under two levels of surround luminance: 0.04 and 23.6 ml. One at a time, individual differences, surround, age, and the light/dark ratios were held constant in several analyses of variance. Stepwise, inductive regression equations were calculated. Reliability of the data varied as a function of the experimental conditions. All first-order variables, the second-order interactions with the exception of Age×Surround, and the third-order interaction, were shown to significantly influence CFF. The best predictors of CFF were the lowest light/dark ratios, the primary variables, combined with age, the secondary variable.

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% Light–time in flicker cycle
N	Age	Surround		2%	5%	10%	25%	40%	50%	75%	90%	95%	98%
		23.6 mL	M	44.82	46.17	47.65	47.25	45.12	44.52	38.06	29.84	20.72	10.45
10	13–19		SD	1.77	1.83	1.84	2.27	1.92	1.80	2.57	2.21	1.75	2.13
		0.04 mL	M	42.37	44.02	45.41	44.50	42.74	41.54	36.20	28.41	20.52	12.04
			SD	1.94	2.01	1.94	2.29	2.03	1.81	2.26	2.01	1.72	1.22

		23.6 mL	M	42.83	44.39	46.00	46.00	44.37	42.43	37.84	29.85	20.88	10.67
13	20–29		SD	2.02	1.94	2.19	2.56	2.63	2.77	2.09	2.44	3.11	2.39
		0.04 mL	M	40.15	42.20	43.54	43.16	41.62	40.58	35.19	27.42	19.90	11.31
			SD	1.78	1.60	1.96	2.04	1.91	2.04	2.19	2.59	2.48	2.33

		23.6 mL	M	41.12	42.81	44.27	44.83	42.79	42.84	37.71	29.49	20.19	9.88
13	30–39		SD	2.02	1.92	2.27	2.72	2.60	2.75	2.64	3.18	2.85	1.68
		0.04 mL	M	39.23	41.46	42.59	42.45	41.18	40.37	35.52	27.42	19.80	11.50
			SD	2.58	2.54	2.71	2.55	2.83	2.84	2.86	2.96	2.82	2.60

		23.6 mL	M	40.74	42.24	43.72	44.35	43.37	42.45	37.14	29.00	20.86	10.25
16	40–19		SD	2.79	2.75	2.56	2.30	2.41	2.43	2.00	2.79	3.67	2.26
		0.04 mL	M	37.91	40.11	41.48	41.77	40.84	39.93	35.09	27.23	20.04	11.59
			SD	2.88	2.85	2.60	2.15	2.64	1.96	1.94	2.52	2.75	2.26

		23.6 mL	M	37.89	39.92	41.15	42.43	42.41	41.77	36.94	28.53	19.07	8.50
14	50–59		SD	2.62	2.87	2.59	2.29	1.94	1.91	1.89	2.95	2.91	1.47
		0.04 mL	M	35.60	37.91	39.56	40.61	40.33	39.66	34.90	26.64	18.53	9.52
			SD	2.71	2.65	2.69	2.53	2.20	2.14	1.84	2.61	2.74	1.69

		23.6 mL	M	37.48	39.63	41.32	42.31	41.63	40.87	36.22	28.17	18.17	8.06
14	60–69		SD	1.35	1.54	2.22	1.82	2.15	2.22	2.48	3.53	3.35	1.95
		0.04 mL	M	35.10	37.37	38.90	39.95	39.37	38.94	34.29	26.29	18.21	9.54
			SD	1.60	1.60	2.12	2.84	2.86	2.79	3.13	4.08	3.35	2.07

		23.6 mL	M	34.89	36.99	38.56	40.32	40.68	40.46	36.63	29.83	20.38	8.09
13	70–79		SD	2.39	2.52	2.54	2.59	2.67	2.75	3.00	3.94	4.73	4.36
		0.04 mL	M	32.93	35.04	37.12	38.43	38.72	38.61	34.81	27.87	19.38	9.12
			SD	2.26	2.34	2.48	2.54	2.76	2.94	2.86	3.76	3.72	2.53

		23.6 mL	M	33.09	34.89	36.34	38.12	38.70	38.39	34.57	26.97	17.67	7.32
15	80–89		SD	3.06	3.63	3.71	3.88	3.80	3.46	3.42	3.52	3.73	2.21
		0.04 mL	M	30.88	32.62	34.38	35.92	36.45	36.49	32.84	24.90	17.06	7.67
			SD	2.79	3.03	3.36	3.36	3.50	3.56	3.29	3.53	3.15	2.15

		23.6 mL	M	38.86	40.64	42.13	43.01	42.41	41.70	36.81	28.89	19.69	9.20
108	13–89		SD	4.33	4.26	4.28	3.83	3.31	3.13	2.77	3.29	3.62	2.39
		0.04 mL	M	36.51	38.59	40.13	40.67	40.03	39.41	34.78	26.94	19.11	10.21
			SD	4.24	4.28	4.17	3.59	3.59	2.96	2.79	3.26	3.12	2.61

Surround
High (23.6 mL)	R	Low (0.04 mL)	R
R2·3, 1	0.99	R2·3, 5, 1, 8, 9	0.99
R3·4, 2, 1, 5	0.99	R3·4, 2, 4, 11, 8	0.99
R4·3, 5, 1	0.99	R4·3, 5, 6	0.99
R5·6, 4, 9	0.99	R5·2, 4, 6	0.99
R6·7, 5, 1	0.99	R6·7, 5, 4	0.99
R7·6, 8, 11, 1, 3, 9	0.99	R7·6, 8, 11, 10, 3	0.98
R8·7, 9, 1, 5	0.97	R8·7, 9, 1	0.97
R9·10, 8, 6	0.92	R9·10, 8, 6, 11	0.93
R10·9, 11	0.89	R10·9, 11	0.89
R11·10, 1, 4, 7, 3	0.83	R11·10, 3, 8	0.84

% Light–time in flicker cycle
N	Age	Surround		2%	5%	10%	25%	40%	50%	75%	90%	95%	98%
		23.6 mL	M	44.82	46.17	47.65	47.25	45.12	44.52	38.06	29.84	20.72	10.45
10	13–19		SD	1.77	1.83	1.84	2.27	1.92	1.80	2.57	2.21	1.75	2.13
		0.04 mL	M	42.37	44.02	45.41	44.50	42.74	41.54	36.20	28.41	20.52	12.04
			SD	1.94	2.01	1.94	2.29	2.03	1.81	2.26	2.01	1.72	1.22

		23.6 mL	M	42.83	44.39	46.00	46.00	44.37	42.43	37.84	29.85	20.88	10.67
13	20–29		SD	2.02	1.94	2.19	2.56	2.63	2.77	2.09	2.44	3.11	2.39
		0.04 mL	M	40.15	42.20	43.54	43.16	41.62	40.58	35.19	27.42	19.90	11.31
			SD	1.78	1.60	1.96	2.04	1.91	2.04	2.19	2.59	2.48	2.33

		23.6 mL	M	41.12	42.81	44.27	44.83	42.79	42.84	37.71	29.49	20.19	9.88
13	30–39		SD	2.02	1.92	2.27	2.72	2.60	2.75	2.64	3.18	2.85	1.68
		0.04 mL	M	39.23	41.46	42.59	42.45	41.18	40.37	35.52	27.42	19.80	11.50
			SD	2.58	2.54	2.71	2.55	2.83	2.84	2.86	2.96	2.82	2.60

		23.6 mL	M	40.74	42.24	43.72	44.35	43.37	42.45	37.14	29.00	20.86	10.25
16	40–19		SD	2.79	2.75	2.56	2.30	2.41	2.43	2.00	2.79	3.67	2.26
		0.04 mL	M	37.91	40.11	41.48	41.77	40.84	39.93	35.09	27.23	20.04	11.59
			SD	2.88	2.85	2.60	2.15	2.64	1.96	1.94	2.52	2.75	2.26

		23.6 mL	M	37.89	39.92	41.15	42.43	42.41	41.77	36.94	28.53	19.07	8.50
14	50–59		SD	2.62	2.87	2.59	2.29	1.94	1.91	1.89	2.95	2.91	1.47
		0.04 mL	M	35.60	37.91	39.56	40.61	40.33	39.66	34.90	26.64	18.53	9.52
			SD	2.71	2.65	2.69	2.53	2.20	2.14	1.84	2.61	2.74	1.69

		23.6 mL	M	37.48	39.63	41.32	42.31	41.63	40.87	36.22	28.17	18.17	8.06
14	60–69		SD	1.35	1.54	2.22	1.82	2.15	2.22	2.48	3.53	3.35	1.95
		0.04 mL	M	35.10	37.37	38.90	39.95	39.37	38.94	34.29	26.29	18.21	9.54
			SD	1.60	1.60	2.12	2.84	2.86	2.79	3.13	4.08	3.35	2.07

		23.6 mL	M	34.89	36.99	38.56	40.32	40.68	40.46	36.63	29.83	20.38	8.09
13	70–79		SD	2.39	2.52	2.54	2.59	2.67	2.75	3.00	3.94	4.73	4.36
		0.04 mL	M	32.93	35.04	37.12	38.43	38.72	38.61	34.81	27.87	19.38	9.12
			SD	2.26	2.34	2.48	2.54	2.76	2.94	2.86	3.76	3.72	2.53

		23.6 mL	M	33.09	34.89	36.34	38.12	38.70	38.39	34.57	26.97	17.67	7.32
15	80–89		SD	3.06	3.63	3.71	3.88	3.80	3.46	3.42	3.52	3.73	2.21
		0.04 mL	M	30.88	32.62	34.38	35.92	36.45	36.49	32.84	24.90	17.06	7.67
			SD	2.79	3.03	3.36	3.36	3.50	3.56	3.29	3.53	3.15	2.15

		23.6 mL	M	38.86	40.64	42.13	43.01	42.41	41.70	36.81	28.89	19.69	9.20
108	13–89		SD	4.33	4.26	4.28	3.83	3.31	3.13	2.77	3.29	3.62	2.39
		0.04 mL	M	36.51	38.59	40.13	40.67	40.03	39.41	34.78	26.94	19.11	10.21
			SD	4.24	4.28	4.17	3.59	3.59	2.96	2.79	3.26	3.12	2.61

Surround
High (23.6 mL)	R	Low (0.04 mL)	R
R2·3, 1	0.99	R2·3, 5, 1, 8, 9	0.99
R3·4, 2, 1, 5	0.99	R3·4, 2, 4, 11, 8	0.99
R4·3, 5, 1	0.99	R4·3, 5, 6	0.99
R5·6, 4, 9	0.99	R5·2, 4, 6	0.99
R6·7, 5, 1	0.99	R6·7, 5, 4	0.99
R7·6, 8, 11, 1, 3, 9	0.99	R7·6, 8, 11, 10, 3	0.98
R8·7, 9, 1, 5	0.97	R8·7, 9, 1	0.97
R9·10, 8, 6	0.92	R9·10, 8, 6, 11	0.93
R10·9, 11	0.89	R10·9, 11	0.89
R11·10, 1, 4, 7, 3	0.83	R11·10, 3, 8	0.84

Abstract

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Tables (2)

Journal of the Optical Society of America