Peripheral and parafoveal cueing and masking effects on saccadic selectivity in a gaze-contingent window paradigm.
The present study employed the gaze-contingent window paradigm to investigate parafoveal and peripheral cueing and masking effects on saccadic selectivity in a triple-conjunction visual search task. In the cueing conditions, the information shown outside the gaze-contingent window was restricted to the feature or feature pair shared between the target and a particular distractor type. In the masking conditions, no stimulus features were shown outside the window. Significant cueing and masking effects on saccadic selectivity were observed for saccades directed at items within the window, where all features were visible across experimental conditions. Cueing a particular feature or feature pair biased saccadic selectivity towards this feature or feature pair, while masking generally reduced saccadic selectivity. These findings support the concept of visual guidance being a preattentive process that operates in parallel across the display.
Pomplun
M
M
Department of Psychology, University of Toronto, 100 St. George Street, Ont., M5S 3G3, Toronto, Canada. marc@psych.utoronto.ca
Reingold
E M
EM
Shen
J
J
D000704:Analysis of Variance; D003463:Cues; D005403:Fixation, Ocular / Q000502:physiology; D005584:Fovea Centralis / Q000502:physiology*; D006801:Humans; D010470:Perceptual Masking / Q000502:physiology*; D011930:Reaction Time; D012438:Saccades / Q000502:physiology*; D014794:Visual Fields / Q000502:physiology*