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.
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Andrews, D. P. Perception of contour orientation in the central fovea. Part 1: Short lines.Vision Research, 1967,7, 975–997.
Best, F. Über die Grenze der Erkennbarkeit von Lagen-untershieden.Albrecht v. Graefes Archiv fur Ophthalmologie, 1900,51, 453–460.
Gibson, E. J. Improvement in perceptual judgments as a function of controlled practice or training.Psychological Bulletin, 1953,50, 401–431.
Gibson, E. J.Principles of perceptual learning and development. New York: Appleton-Century-Crofts, 1969.
Green, D. M., &Swets, J. A.Signal detection theory and psychophysics. New York: Wiley, 1966.
Leinowitz, H. Some factors influencing the variability of vernier adjustments.American Journal of Psychology, 1955,68, 226–273.
Ludvigh, E., &Mckinnon, P. The effect of orientation on the three-dot alignment test.American Journal of Ophthalmology, 1967,64, 261–265.
Mansfield, R. J. W. Neural basis of orientation perception in primate vision.Science, 1974,186, 1133–1135
Mcfadden, D. Three computational versions of proportion correct for use in forced choice experiments.Perception & Psychophysics, 1970,8, 336–342.
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.
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.
Tanner, W. P., &Rivette, C. L. Learning and psychophysical experiments.Journal of the Acoustical Society of America, 1963,35, 1896.
Tyler, C. W., &Mitchell, D. E. Orientation differences for perception of sinusoidal line stimuli.Vision Research, 1977,17, 83–88.
Volkmann, A. W.Physiologische Untersuchungen im Gebiete der Optik. Leipzig: Breitkopf & Hartel, 1863.
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.
Westheimer, G., &McKee, S. P. Integration regions for visual hyperacuity.Vision Research, 1977,17, 89–94.
Wilcox, W. W. An interpretation of the relation between visual acuity and light intensity.Journal of General Psychology, 1936,15, 405–435.
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This research was supported by the National Eye Institute, U.S. Public Health Service, through Grant EY-00220.
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Mckee, S.P., Westhe, G. Improvement in vernier acuity with practice. Perception & Psychophysics 24, 258–262 (1978). https://doi.org/10.3758/BF03206097
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DOI: https://doi.org/10.3758/BF03206097