Sage Journals: Discover world-class research

Abstract

The relationship between stimulus velocity and the critical-flicker-fusion frequency (CFF) of an intermittent visual stimulus was investigated by modulating the sweep-speed and intensity of an oscilloscope beam. When Ss fixated upon a stationary point, CFF showed an approximately linear increase as a function of velocity. Velocity did not, however, influence CFF when S fixated on the moving stimulus. The multiple correlation (.68) between CFF determinations obtained with a stationary stimulus vs those obtained with several different velocities implies that the same mechanisms which determined CFF under the former condition were also operative in the latter. The trend of the bivariate correlations between the average CFF values for isolated pairs of experimental conditions suggests that an additional factor, possibly spatial acuity, may have become progressively dominant as velocities exceeded 1.08°/sec.

Get full access to this article

View all access options for this article.

References

Anderson

D. A.

Simonson

Chromatic fusion and luminance fusion. Paper presented at National Conference of the Association for Research in Opthalmology, Atlantic City, New Jersey, 1963.

Barlow

H. B.

Sparrock

J. M. B.

The role of afterimages in dark adaptation. Science, 1964, 144, 1309–1314.

Bartley

S. H.

The neural determination of critical flicker frequency. J. exp. Psychol., 1937, 21, 678–686.

Bartley

S. H.

Clarification of Bartley's model, a reply to Throsby. Psychol. Bull., 1963, 60, 505–508.

Crozier

W. I.

Wolf

Theory and measurement of visual mechanisms. J. gen. Physiol., 1941, 24, 505–534.

Dixon

W. J.

Massey

F. J.

Jr.

Introduction to statistical analysis. (2nd ed.) New York: McGraw-Hill, 1957.

Fry

G. A.

Bartley

S. H.

The effect of steady stimulation of one part of the retina upon the critical flicker frequency in another. J. exp. Psychol., 1936, 19, 351–356.

Geldard

F. A.

The human senses. New York: Wiley, 1953.

Granit

Receptors and sensory perception. New Haven: Yale Univer. Press, 1962.

10.

Granit

Davis

W. A.

Comparative studies on the peripheral and central retina: IV. Temporal summation of the subliminal visual stimuli and the time course of the excitatory after-effect. Amer. J. Physiol., 1931, 98, 644–653.

11.

Granit

Hammond

E. L.

Comparative studies on the peripheral and central retina: V. The sensation-time curve and the time course of the fusion frequency of intermittent stimulation. Amer. J. Physiol., 1931, 98, 654–663.

12.

Kuglemass

Landis

Relation of area and luminance to the threshold for critical flicker fusion. Amer. J. Psychol., 1954, 68, 1–19.

13.

Landis

Determinants of the critical flicker-fusion threshold. Physiol. Rev., 1954, 14, 259–286.

14.

Le Grand

Light, colour and vision. New York: Dover, 1957.

15.

Matin

MacKinnon

G. E.

Autokinetic movement, selective manipulation of directional components by image stabilization. Science, 1964, 143, 147–148.

16.

Maturana

H. R.

Frenk

Directional movement and horizontal edge detectors in the pigeon retina. Science, 1963, 142, 977–979.

17.

Simonson

Brozek

Flicker fusion frequency, background and applications. Physiol. Rev., 1952, 32, 349–378.

Foveal Flicker Fusion Using a Moving Stimulus

Abstract

Get full access to this article

References