Flicker-defined form stimuli are minimally affected by centre-surround lateral contrast interactions
Jonathan Denniss, Allison M McKendrick
OPHTHALMIC AND PHYSIOLOGICAL OPTICS | WILEY | Published : 2016
PURPOSE: Flicker-defined form (FDF) stimuli have recently been adopted for visual field testing. A key difference between FDF and traditional perimetric stimuli is that the entire display background contains flickering dots. The purpose of this study was to determine whether the perception of FDF stimuli is influenced by lateral interactions involving regions beyond the stimulus border in young healthy observers. METHODS: Experiment 1 measured the effect of surround size and retinal eccentricity on the detection of the FDF contour. Psychometric functions were collected for surround diameters of 20°, 30° and 40°, and with stimuli centred at eccentricities of 0°, 10° and 20°. Experiment 2 meas..View full abstract
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Awarded by Australian Research Council
Preliminary analysis of parts of the data was performed by students of the Bachelor of Optometry and Doctor of Optometry degree programs at the University of Melbourne as part of a student group research project. The work was funded by the Australian Research Council DP140100157.