The effect of stimulus contrast on pre-saccadic orientation discrimination | Zendy

Mehmet Aga-Oglu | Zendy; Susana T. L. Chung | Zendy

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The effect of stimulus contrast on pre-saccadic orientation discrimination

Author(s) -

Mehmet Aga-Oglu,

Susana T. L. Chung

Publication year - 2016

Publication title -

journal of vision

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.126

H-Index - 113

ISSN - 1534-7362

DOI - 10.1167/16.12.1040

Subject(s) - saccade , saccadic masking , stimulus (psychology) , fixation (population genetics) , eye movement , contrast (vision) , psychology , audiology , artificial intelligence , neuroscience , population , computer science , cognitive psychology , medicine , environmental health

Task: Whether the target Gabor is tilted clockwise or counterclockwise. Participants: Seven observers with normal or corrected-to-normal vision. Apparatus: Eyelink 1000. Display++ monitor. 120 Hz at 1920x1080. 76cm distance. Stimulus conditions: Gabor patches: 2 cpd, 0.5 deg SD. Flanker-target distance: 4 deg. Flankers: Always vertical. Target orientation: A value corresponding to ~80% discrimination performance Blocked: 1) Fixation : 600 trials per observer 2) Saccade : 3000 trials per observer Randomized: i) Unflanked – high contrast (100%) ii) Unflanked – low contrast (25%) iii) Both target and flankers high contrast iv) Target low contrast, flankers high contrast v) Target high contrast, flankers low contrast vi) Both target and flankers low contrast Procedure: Conclusions

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