Stimulus luminance and dichoptic pattern masking

Monahan, John S.; Steronko, Robert J.

doi:10.1016/0042-6989(77)90028-1

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…A similar deviation has been previously reported for briefly flashed stimuli with pattern and light masks (Kahneman, 1966;Kaswan and Young, 1963;Turvey, 1973), and it appears to be consistent with a transition from additive to multiplicative interaction between stimulus duration and ISI (Monahan and Steronko, 1977;Turvey, 1973). Whereas SOA has been reported to be the critical parameter in a number of backward masking conditions, including metacontrast (Kahneman, 1967(Kahneman, , 1968, pattern masking by a spatially uniform field (Donchin, 1967) and masking by structure (Spencer and Shuntich, 1970;Turvey, 1973), experiments using sparse noise masks have shown a multiplicative interaction between ISI and stimulus duration (Kinsbourne and Warrington, 1962a, b;Turvey, 1973).…”

Section: Discussionsupporting

confidence: 83%

Effects of ISI and flash duration on the identification of briefly flashed stimuli

Rucci¹,

Beck²

2005

Spatial Vis

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The identification accuracy of briefly flashed stimuli followed by an interstimulus interval (ISI) of variable length was compared to that obtained with longer flashes that prolonged the exposure of the stimulus throughout the ISI. The interval between the onset of the stimulus and the onset of the mask (stimulus onset asynchrony (SOA)) was the same in the two conditions. Consistent with a dependence of visual identification on SOA, the percentages of correct identification in the two conditions were approximately similar at all SOAs irrespective of the level of noise, stimulus familiarity, and stimulus complexity. However, departures from the onset-onset rule were also present. While the two conditions yielded virtually identical identification accuracy with an SOA of 80 ms, small but significant differences were found for shorter and longer intervals. Possible theoretical explanations of the results are presented.

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Section: Discussionsupporting

confidence: 83%

Effects of ISI and flash duration on the identification of briefly flashed stimuli

Rucci¹,

Beck²

2005

Spatial Vis

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“…Dependent measure. The critical ISI necessary for recognition of letters was determined in a manner similar to that of Turvey (1973) and Monahan and Steronko (1977). Target and mask were initially presented at an ISI of 10 msec.…”

Section: Methodsmentioning

confidence: 99%

Impairment in early stages of visual information processing in nonpsychotic schizotypic individuals.

Steronko¹,

Woods²

1978

Journal of Abnormal Psychology

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This study investigated the perceptual functioning of individuals whose Minnesota Multiphasic Personality Inventory (MMPI-168) profiles indicated schizophrenic tendencies but who did not exhibit marked thought disorder. The MMPI 2-7-8 code type was used to identify these subjects from a large pool of college students. This group was compared on a backward visual masking task with two control groups: one whose profiles were inflation free and another whose profiles showed elevations on any two scales except the Schizophrenia <(Sc) scale. Critical interstimulus interval (ISI) was used as the dependent measure. The 2-7-8 group required significantly longer critical ISI to recognize target letters than did the inflation-free group. Regression analysis showed that for the group which showed inflations on any two scales except Sc, Sc was a statistically significant predictor of critical ISI. It is concluded that a deficit exists at a very early stage in the visual information processing system of the 2-7-8 group.

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“…Nevertheless, this does serve to emphasize the unknown contribution of binocular rivalry in those studies that report any effect of dichoptic viewing. Moreover, further evidence for ocular suppression during dichoptic viewing has been demonstrated convincingly in a recent study of masking effects by Monohan and Steronko (1977). In an attempt to control for binocular rivalry effects resulting from chronic ocular dominance of one eye over the other within subjects, these investigators preselected subjects on the criterion of equal masking effects across the two eyes before de-termining luminance effects in a dichoptic pattern-masking experiment.…”

Section: Binocular (Retinal) Rivalrymentioning

confidence: 99%

The dichoptic viewing paradigm: Do the eyes have it?

Long¹

1979

Psychological Bulletin

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Stimulus luminance and dichoptic pattern masking

Cited by 5 publications

References 24 publications

Effects of ISI and flash duration on the identification of briefly flashed stimuli

Effects of ISI and flash duration on the identification of briefly flashed stimuli

Impairment in early stages of visual information processing in nonpsychotic schizotypic individuals.

The dichoptic viewing paradigm: Do the eyes have it?

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