Abstract
We have previously identified categorical individual differences in the occurrence of temporal brightness enhancement (TBE) by using a simultaneous brightness discrimination paradigm (Bowen & Markell, 1980).TBE is a nonmonotonic relation between brightness and pulse duration, pulses of intermediate duration (75–125 msec) can appear brighter than longer or shorter pulses of the same luminance. Three classes of observers can be defined based on whether they perceive TBE under one of two conditions of temporal asynchrony between a short test pulse and a longer (500 msec) comparison pulse:simultaneous onset of the pulses orsimultaneous offset. Type A observers show TBE for both asynchrony conditions; Type B observers show the effect for simultaneous offset but not simultaneous onset; Type C observers do not show TBE for either asynchrony. In the present study, we show that Type A and Type C observers maintain a constant brightness-duration relation as the asynchrony between test and comparison pulses is varied from simultaneous onset to simultaneous offset. Type B observers show a gradual shift in the brightness-duration relation as asynchrony changes. In a separate experiment, we find that practice has little effect on Type A and Type B observers but that Type C observers may change in classification to Types A and B over as few as five experimental sessions. The hypothesis that individual differences are due to differential “weighting” of chromatic (sustained) and achromatic (transient) visual channels is discussed.
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References
Berman, S. M., &Stewart, A. L. (1978). Laterally induced impedance effects in vision.Journal of Mathematical Psychology,18, 73–99.
Bowen, R. W. (1981). Latencies for chromatic and achromatic visual mechanisms.Vision Research,21, 1457–1466.
Bowen, R. W., &Markell, K. A. (1980). Temporal brightness enhancement studied with a large sample of observers: Evidence for individual differences in brightness perception.Perception & Psychophysics,27, 465–476.
Bowen, R. W., &Nissen, M. J. (1979). Luminance, not brightness, determines temporal brightness enhancement with chromatic stimuli.Journal of the Optical Society of America,69, 581–584.
Bowen, R. W., &Pokorny, J. (1978). Target edge sharpness and temporal brightness enhancement.Vision Research,18, 1691–1695.
Bowen, R. W., Sekuler, R., Owsley, C. J., &Markell, K. A. (1982). Individual differences in brightness perception.Perception & Psychophysics,30, 587–593.
Breitmeyer, B., &Ganz, L. (1976). Implications of sustained and transient channels for theories of visual pattern masking, saccadic suppression and information processing.Psychological Review,83, 1–36.
Broca, D., &Sulzer, A. (1902). La sensation lumineuse en fonction du temps.Journal de Physiologie et de Pathologie Generale,4, 632–640.
Drum, B. (1980). Relation of brightness to threshold for light-adapted and dark-adapted rods and cones: Effects of retinal eccentricity and target size.Perception,9, 633–650.
Guth, S. L., Massof, R.W., &Benzschawel, T. (1980). Vector model for normal and dichromatic color vision.Journal of the Optical Society of America,70, 197–212.
Higgins, K.E., &Rinalducci, E. J. (1975). Suprathreshold intensity-area relationships: A spatial Broca-Sulzer effect.Vision Research,15, 129–143.
Ingling, C. R. (1978). Luminance and opponent color contributions to visual detection and to temporal and spatial integration: Comment.Journal of the Optical Society of America,68, 1143–1146.
Kelly, D. H., &Savoie, R. E. (1978). Theory of flicker and transient responses. III. An essential nonlinearity.Journal of the Optical Society of America,68, 1481–1490.
Kitterle, F. L., &Corwin, T. R. (1983). The effects of temporal waveform upon apparent contrast.Perception & Psychophysics,33, 72–74.
Kitterle, F. L., &Toney, H. C. (1983). The effects of temporal waveform upon temporal darkness enhancement.Perception & Psychophysics,33, 375–378.
Lupp, D., Hauske, G., &Wolf, W. (1978). Different systems for the visual detection of high and low spatial frequencies.Photographic Science and Engineering,22, 80–84.
Osaka, N. (1982). Exponent of the Broca-Sulzer flash duration as a function of retinal eccentricity.Journal of the Optical Society of America,72, 62–67.
Woodworth, R. S., &Schlosberg, H. (1954).Experimental psychology. New York: Holt, Rinehart and Winston.
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Bowen, R.W. Temporal brightness enhancement: Studies of individual differences. Perception & Psychophysics 36, 401–408 (1984). https://doi.org/10.3758/BF03207494
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DOI: https://doi.org/10.3758/BF03207494