Orientation-Specific Effects of Patterns of Adapting Light on Visual Acuity*

Alberta S. Gilinsky

doi:10.1364/JOSA.58.000013

Journal of the Optical Society of America
Vol. 58,
Issue 1,
pp. 13-18
(1968)
•https://doi.org/10.1364/JOSA.58.000013

Orientation-Specific Effects of Patterns of Adapting Light on Visual Acuity

Alberta S. Gilinsky

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Alberta S. Gilinsky, "Orientation-Specific Effects of Patterns of Adapting Light on Visual Acuity*," J. Opt. Soc. Am. 58, 13-18 (1968)

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Abstract

Inspection of a pattern of horizontal, vertical, or oblique lines differentially affects the visual acuity for test gratings as a function of their orientation. After a horizontal grating is viewed for 1 sec or longer, the resolution threshold for horizontal contours is greater than the threshold for the identification of vertical and obliquely oriented contours. Conversely, prolonged viewing of vertical contours raises the threshold for the identification of vertical lines above those for other orientations. Similar results are found following adapting exposures to left-and right-oblique contours. The differential masking effects are systematic functions of the duration of exposure to the light-and-dark adapting pattern.

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Adaptation pattern	Test pattern	Subject	Adaptation duration (sec)
Adaptation pattern	Test pattern	Subject	0.10	0.25	0.50	1.0	1.5	2.0	3.0	5.0
Nonstriate	Vertical	AG	400	475	275	250	200	225	275	375
		CV	300	250	200	250	175	175	200	200
		RM	550	550	350	300	250	400	350	500
		LN	200	225	175	125	125	125	—	125
		M	362	375	250	231	188	231	275	300

	Horizontal	AG	250	375	225	250	275	250	350	250
		CV	550	325	200	525	425	325	275	400
		RM	600	450	400	300	400	250	350	250
		LN	350	300	475	150	350	200	—	200
		M	438	362	325	306	362	256	325	275

	Oblique right	AG	450	550	375	325	400	350	550	550
		CV	350	425	450	550	425	450	400	400
		RM	850	350	350	350	500	350	350	400
		LN	175	350	250	150	300	275	—	150
		M	456	419	356	344	406	356	433	375

	Oblique left	AG	250	500	650	625	350	575	800	1000
		CV	900	400	525	400	325	400	700	600
		RM	750	1050	500	650	900	350	300	350
		LN	275	225	450	150	400	350	—	300
		M	544	544	531	456	494	419	600	562

Horizontal	Vertical	AG	600	350	500	200	300	450	300	300
		CV	700	300	400	200	300	250	175	200
		RM	700	750	500	500	750	450	300	250
		LN	650	1100	900	900	550	375	—	275
		M	662	625	575	450	475	381	258	256

	Horizontal	AG	200	400	475	8000	5500	3250	11 000	11 000
		CV	500	250	400	1150	1900	900	1500	2000
		RM	600	950	550	300	800	1400	2000	11 000
		LN	300	250	250	200	200	300	—	11 000
		M	400	462	419	2412	2100	1462	4833	8750

	Oblique right	AG	650	700	500	450	350	550	500	450
		CV	550	600	950	700	525	900	350	500
		RM	3500	500	550	350	550	500	850	750
		LN	300	400	300	400	350	300	—	400
		M	1250	550	575	475	444	562	567	525

	Oblique left	AG	700	900	1100	650	500	550	750	800
		CV	900	900	450	500	575	550	900	500
		RM	1600	1150	1600	700	550	450	750	750
		LN	450	700	350	300	300	400	—	300
		M	912	912	875	538	481	488	800	588

Vertical	Vertical	AG	225	225	475	325	300	2370	600	11000
		CV	400	400	550	700	750	600	400	1500
		RM	700	400	600	450	300	500	700	1000
		LN	225	200	225	400	1000	300	—	5000
		M	388	306	462	469	588	942	567	4625

	Horizontal	AG	550	275	600	400	225	550	425	350
		CV	2500	1100	900	900	625	575	400	400
		RM	950	600	750	2000	500	650	400	800
		LN	800	300	600	250	350	250	—	300
		M	1200	569	712	888	425	506	408	462

	Oblique right	AG	400	625	675	700	450	725	675	350
		CV	800	300	700	500	350	350	500	600
		RM	2500	800	650	550	900	850	550	550
		LN	400	250	350	250	400	600	—	300
		M	1025	494	594	500	525	631	575	450

	Oblique left	AG	800	780	800	600	750	600	900	800
		CV	1100	400	625	600	400	500	500	700
		RM	750	900	1150	850	850	600	650	500
		LN	550	500	600	450	350	300	—	200
		M	800	645	794	625	588	500	683	550

Oblique right	Vertical	AG	450	325	300	250	300	375	250	300
		CV	300	225	350	300	250	225	300	300
		RM	550	950	600	400	250	400	750	450
		LN	250	350	300	200	250	250	—	175
		M	388	462	388	288	262	312	433	306

	Horizontal	AG	350	375	250	200	200	275	250	300
		CV	900	500	800	700	500	300	700	700
		RM	700	2000	1000	750	550	750	550	800
		LN	350	400	300	200	200	200	—	175
		M	575	819	588	462	362	381	500	494

	Oblique right	AG	500	700	500	550	11 000	11 000	11 000	11 000
		CV	800	2200	400	1250	800	3000	2000	3000
		RM	950	5000	500	350	1050	8000	11 000	11 000
		LN	400	250	200	300	250	325	—	2000
		M	662	2038	400	612	3275	5581	8000	6750

	Oblique left	AG	450	2300	750	500	450	450	550	900
		CV	1100	4000	750	550	400	700	1200	400
		RM	900	900	800	550	750	450	700	750
		LN	900	800	600	600	700	300	—	1000
		M	838	2000	725	550	575	475	817	762

Oblique left	Vertical	AG	450	425	250	250	300	225	300	250
		CV	300	200	225	250	175	350	200	200
		RM	700	900	700	450	600	600	250	300
		LN	300	250	200	200	250	200	—	175
		M	438	444	344	288	331	344	250	231

	Horizontal	AG	600	525	350	250	200	350	200	300
		CV	600	600	500	500	400	400	225	500
		RM	1050	850	400	400	400	1700	700	350
		LN	300	350	200	200	300	175	—	400
		M	638	581	362	338	325	656	375	388

	Oblique right	AG	550	875	550	400	350	375	450	400
		CV	650	600	600	450	450	350	400	800
		RM	1300	1600	2000	850	850	400	800	450
		LN	500	700	600	800	500	300	—	225
		M	750	944	1383	625	538	356	550	469

	Oblique left	AG	775	375	900	11 000	11 000	11 000	11 000	11 000
		CV	600	300	1500	3000	1100	800	4000	11 000
		RM	1000	1200	4000	5000	1200	900	750	11 000
		LN	800	800	225	800	250	1000	—	3000
		M	794	669	1656	4950	3388	3425	5250	9000

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Journal of the Optical Society of America