Advertisement

Perception & Psychophysics

, Volume 24, Issue 3, pp 258–262 | Cite as

Improvement in vernier acuity with practice

  • Suzanne P. Mckee
  • Gerald Westhe
Article

Abstract

The ability to detect small differences in the positions of two lines (vernier acuity) showed some improvement with practice in all eight subjects, even for subjects given no error feedback. The average decline in threshold with training (2,000–2,500 responses) was about 40%. We used three target orientations: vertical, horizontal, and right oblique. Orientational differences remained stable in only one subject. In five subjects, orientational differences present at the beginning of training diminished or disappeared with increased experience; in two, they increased.

Keywords

Astigmatism Amblyopia Practice Block Target Orientation Error Feedback 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Andrews, D. P. Perception of contour orientation in the central fovea. Part 1: Short lines.Vision Research, 1967,7, 975–997.CrossRefPubMedGoogle Scholar
  2. Best, F. Über die Grenze der Erkennbarkeit von Lagen-untershieden.Albrecht v. Graefes Archiv fur Ophthalmologie, 1900,51, 453–460.Google Scholar
  3. Gibson, E. J. Improvement in perceptual judgments as a function of controlled practice or training.Psychological Bulletin, 1953,50, 401–431.CrossRefPubMedGoogle Scholar
  4. Gibson, E. J.Principles of perceptual learning and development. New York: Appleton-Century-Crofts, 1969.Google Scholar
  5. Green, D. M., &Swets, J. A.Signal detection theory and psychophysics. New York: Wiley, 1966.Google Scholar
  6. Leinowitz, H. Some factors influencing the variability of vernier adjustments.American Journal of Psychology, 1955,68, 226–273.Google Scholar
  7. Ludvigh, E., &Mckinnon, P. The effect of orientation on the three-dot alignment test.American Journal of Ophthalmology, 1967,64, 261–265.PubMedGoogle Scholar
  8. Mansfield, R. J. W. Neural basis of orientation perception in primate vision.Science, 1974,186, 1133–1135CrossRefPubMedGoogle Scholar
  9. Mcfadden, D. Three computational versions of proportion correct for use in forced choice experiments.Perception & Psychophysics, 1970,8, 336–342.Google Scholar
  10. Mitchell, D. E., Freeman, R. D., &Westheimer, G. Effect of orientation on the modulation sensitivity for interference fringes on the retina.Journal of the Optical Society of America, 1967,57, 246–249.CrossRefPubMedGoogle Scholar
  11. Mitchell, D. E., Freeman, R. D., Millodot, M., &Haegerstrom, G. Meridional amblyopia: Evidence for modification of the human visual system by early visual experience.Vision Research, 1973,13, 535–558.CrossRefPubMedGoogle Scholar
  12. Tanner, W. P., &Rivette, C. L. Learning and psychophysical experiments.Journal of the Acoustical Society of America, 1963,35, 1896.CrossRefGoogle Scholar
  13. Tyler, C. W., &Mitchell, D. E. Orientation differences for perception of sinusoidal line stimuli.Vision Research, 1977,17, 83–88.CrossRefPubMedGoogle Scholar
  14. Volkmann, A. W.Physiologische Untersuchungen im Gebiete der Optik. Leipzig: Breitkopf & Hartel, 1863.Google Scholar
  15. Westheimer, G., &Mckee, S. P. Visual acuity in the presence of retinal image motion.Journal of the Optical Society of America, 1975,65, 847–850.CrossRefPubMedGoogle Scholar
  16. Westheimer, G., &McKee, S. P. Integration regions for visual hyperacuity.Vision Research, 1977,17, 89–94.CrossRefPubMedGoogle Scholar
  17. Wilcox, W. W. An interpretation of the relation between visual acuity and light intensity.Journal of General Psychology, 1936,15, 405–435.CrossRefGoogle Scholar

Copyright information

© Psychonomic Society, Inc. 1978

Authors and Affiliations

  • Suzanne P. Mckee
    • 1
  • Gerald Westhe
    • 1
  1. 1.Department of Physiology-AnatomyUniversity of CaliforniaBerkeley

Personalised recommendations