Abstract

Contrast thresholds for maintained vision were determined under varying conditions of retinal image motion. The “stopped image” technique was used to eliminate normal image motion. Controlled motion at various frequencies and amplitudes was introduced by rotating one of the mirrors in the optical system. Low-frequency vibrations (1, 2, and 5 cps) of the retinal image were found to be beneficial to maintained vision while high-frequency vibrations (10, 20, and 50 cps) were found to be detrimental to maintained vision when compared to vision in the absence of normal retinal image motion.

© 1957 Optical Society of America

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References

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  1. F. Ratliff, J. Exptl. Psychol. 43, 163 (1952).
    [Crossref]
  2. R. W. Ditchburn and B. L. Ginsborg, Nature 170, 36 (1952).
    [Crossref] [PubMed]
  3. Riggs, Ratliff, Cornsweet, and Cornsweet, J. Opt. Soc. Am. 43, 495 (1953).
    [Crossref] [PubMed]
  4. F. Ratliff and L. A. Riggs, J. Exptl. Psychol. 40, 687 (1950).
    [Crossref]
  5. T. N. Cornsweet and L. A. Riggs, paper delivered at the Eastern Psychological Association meeting (1954).
  6. M. P. Lord and W. D. Wright, Repts. Progr. in Phys. 13, 1 (1950).
    [Crossref]

1953 (1)

1952 (2)

F. Ratliff, J. Exptl. Psychol. 43, 163 (1952).
[Crossref]

R. W. Ditchburn and B. L. Ginsborg, Nature 170, 36 (1952).
[Crossref] [PubMed]

1950 (2)

F. Ratliff and L. A. Riggs, J. Exptl. Psychol. 40, 687 (1950).
[Crossref]

M. P. Lord and W. D. Wright, Repts. Progr. in Phys. 13, 1 (1950).
[Crossref]

Cornsweet,

Cornsweet, T. N.

T. N. Cornsweet and L. A. Riggs, paper delivered at the Eastern Psychological Association meeting (1954).

Ditchburn, R. W.

R. W. Ditchburn and B. L. Ginsborg, Nature 170, 36 (1952).
[Crossref] [PubMed]

Ginsborg, B. L.

R. W. Ditchburn and B. L. Ginsborg, Nature 170, 36 (1952).
[Crossref] [PubMed]

Lord, M. P.

M. P. Lord and W. D. Wright, Repts. Progr. in Phys. 13, 1 (1950).
[Crossref]

Ratliff,

Ratliff, F.

F. Ratliff, J. Exptl. Psychol. 43, 163 (1952).
[Crossref]

F. Ratliff and L. A. Riggs, J. Exptl. Psychol. 40, 687 (1950).
[Crossref]

Riggs,

Riggs, L. A.

F. Ratliff and L. A. Riggs, J. Exptl. Psychol. 40, 687 (1950).
[Crossref]

T. N. Cornsweet and L. A. Riggs, paper delivered at the Eastern Psychological Association meeting (1954).

Wright, W. D.

M. P. Lord and W. D. Wright, Repts. Progr. in Phys. 13, 1 (1950).
[Crossref]

J. Exptl. Psychol. (2)

F. Ratliff, J. Exptl. Psychol. 43, 163 (1952).
[Crossref]

F. Ratliff and L. A. Riggs, J. Exptl. Psychol. 40, 687 (1950).
[Crossref]

J. Opt. Soc. Am. (1)

Nature (1)

R. W. Ditchburn and B. L. Ginsborg, Nature 170, 36 (1952).
[Crossref] [PubMed]

Repts. Progr. in Phys. (1)

M. P. Lord and W. D. Wright, Repts. Progr. in Phys. 13, 1 (1950).
[Crossref]

Other (1)

T. N. Cornsweet and L. A. Riggs, paper delivered at the Eastern Psychological Association meeting (1954).

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Figures (4)

Fig. 1
Fig. 1

Diagram of the apparatus.

Fig. 2
Fig. 2

50% contrast thresholds as a function of amplitude of vibration. The ordination is the log contrast at which the bars were seen during 50% of the viewing period. Six frequencies for four bar widths. Experiment I. One determination per point.

Fig. 3
Fig. 3

50% contrast thresholds as a function of amplitude of vibration at 2 and 50 cps for four bar widths. Experiment II. Four determinations per point.

Fig. 4
Fig. 4

50% contrast thresholds under four viewing conditions as a function of bar width. Experiment III. Four determinations per point.