Abstract

The perceived field corresponding to a physically homogeneous, intermittently luminous area under certain conditions exhibits patterns that have no spatial correlates in the stimulus. These subjective patterns are compared quantitatively under monocular and binocular stimulus conditions by determining the minimum luminance necessary for their emergence at various intermittency frequencies. It is found that one type of pattern, relatively ill defined and irregular, differs little for the two conditions, whereas another kind of pattern, quite geometrical and of more distinct definition, has a much lower threshold binocularly than monocularly. This is thought to be evidence that the former kind of pattern originates below, and the latter kind at or above, the level of binocular interaction.

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  1. J. P. C. Southall, Helmholtz's Treatise on Physiological Optics (Dover, New York, 1962), Vol. II, p. 256.
  2. F. W. Edridge-Green, The Physiology of Vision (Bell, London, 1920), p. 99.
  3. A. Fiorentini and D. M. MacKay, Quart. J. Exptl. Psychol. 17, 282 (1965).
  4. J. R. Smythies, Nature (Lond.) 179, 523 (1957).
  5. A. Remole, J. Opt. Soc. Am. 61, 1164 (1971).
  6. J. P. C. Southall, Helmholtz's Treatise on Physiological Optics (Dover, New York, 1962), Vol. I, p. 217.
  7. C. S. Sherrington, in The Integrative Action of the Nervous System (Yale U.P., New Haven, Conn., 1906, 1947), Lecture X.
  8. W. J. Crozier and E. Wolf, J. Gen. Physiol. 24, 505 (1940).
  9. F. H. Ireland, J. Exp. Psychol. 40, 282 (1950).
  10. C. H. Baker and E. A. Bott, Can. J. Psychol. 5, 9 (1951).
  11. C. H. Baker, Can. J. Psychol. 6, 151 (1952).
  12. F. H. Perrin, J. Opt. Soc. Am. 44, 60 (1954).
  13. C. R. Brown and J. W. Gebhard, J. Exp. Psychol. 38, 188 (1948).
  14. R. W. Burnham, Am. J. Psychol. 67, 492 (1954).

Baker, C. H.

C. H. Baker and E. A. Bott, Can. J. Psychol. 5, 9 (1951).

C. H. Baker, Can. J. Psychol. 6, 151 (1952).

Bott, E. A.

C. H. Baker and E. A. Bott, Can. J. Psychol. 5, 9 (1951).

Brown, C. R.

C. R. Brown and J. W. Gebhard, J. Exp. Psychol. 38, 188 (1948).

Burnham, R. W.

R. W. Burnham, Am. J. Psychol. 67, 492 (1954).

Crozier, W. J.

W. J. Crozier and E. Wolf, J. Gen. Physiol. 24, 505 (1940).

Edridge-Green, F. W.

F. W. Edridge-Green, The Physiology of Vision (Bell, London, 1920), p. 99.

Fiorentini, A.

A. Fiorentini and D. M. MacKay, Quart. J. Exptl. Psychol. 17, 282 (1965).

Gebhard, J. W.

C. R. Brown and J. W. Gebhard, J. Exp. Psychol. 38, 188 (1948).

Ireland, F. H.

F. H. Ireland, J. Exp. Psychol. 40, 282 (1950).

MacKay, D. M.

A. Fiorentini and D. M. MacKay, Quart. J. Exptl. Psychol. 17, 282 (1965).

Perrin, F. H.

F. H. Perrin, J. Opt. Soc. Am. 44, 60 (1954).

Remole, A.

A. Remole, J. Opt. Soc. Am. 61, 1164 (1971).

Sherrington, C. S.

C. S. Sherrington, in The Integrative Action of the Nervous System (Yale U.P., New Haven, Conn., 1906, 1947), Lecture X.

Smythies, J. R.

J. R. Smythies, Nature (Lond.) 179, 523 (1957).

Southall, J. P. C.

J. P. C. Southall, Helmholtz's Treatise on Physiological Optics (Dover, New York, 1962), Vol. II, p. 256.

J. P. C. Southall, Helmholtz's Treatise on Physiological Optics (Dover, New York, 1962), Vol. I, p. 217.

Wolf, E.

W. J. Crozier and E. Wolf, J. Gen. Physiol. 24, 505 (1940).

Other (14)

J. P. C. Southall, Helmholtz's Treatise on Physiological Optics (Dover, New York, 1962), Vol. II, p. 256.

F. W. Edridge-Green, The Physiology of Vision (Bell, London, 1920), p. 99.

A. Fiorentini and D. M. MacKay, Quart. J. Exptl. Psychol. 17, 282 (1965).

J. R. Smythies, Nature (Lond.) 179, 523 (1957).

A. Remole, J. Opt. Soc. Am. 61, 1164 (1971).

J. P. C. Southall, Helmholtz's Treatise on Physiological Optics (Dover, New York, 1962), Vol. I, p. 217.

C. S. Sherrington, in The Integrative Action of the Nervous System (Yale U.P., New Haven, Conn., 1906, 1947), Lecture X.

W. J. Crozier and E. Wolf, J. Gen. Physiol. 24, 505 (1940).

F. H. Ireland, J. Exp. Psychol. 40, 282 (1950).

C. H. Baker and E. A. Bott, Can. J. Psychol. 5, 9 (1951).

C. H. Baker, Can. J. Psychol. 6, 151 (1952).

F. H. Perrin, J. Opt. Soc. Am. 44, 60 (1954).

C. R. Brown and J. W. Gebhard, J. Exp. Psychol. 38, 188 (1948).

R. W. Burnham, Am. J. Psychol. 67, 492 (1954).

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