scholarly journals Perceptual versus postperceptual mediation of visual context effects: Evidence from the letter-superiority effect

1993 ◽  
Vol 53 (2) ◽  
pp. 166-178 ◽  
Author(s):  
Eyal M. Reingold ◽  
Pierre Jolicoeur
Keyword(s):  
Context Effects ◽  
Visual Context ◽  
Superiority Effect

Auditory–visual context effects in a speech and nonspeech condition

2000 ◽  
Vol 107 (5) ◽  
pp. 2887-2887
Author(s):  
Linda W. Norrix ◽  
Iris Oved ◽  
Lawrence D. Rosenblum
Keyword(s):  
Context Effects ◽  
Visual Context

Auditory‐visual context effects on the perception of voicing

2000 ◽  
Vol 108 (5) ◽  
pp. 2482-2482
Author(s):  
Linda W. Norrix ◽  
Connie Keintz
Keyword(s):  
Context Effects ◽  
Visual Context

Visual Context Effects in Web Surveys

2007 ◽  
Vol 71 (4) ◽  
pp. 623-634 ◽  
Author(s):  
Mick P. Couper ◽  
Frederick G. Conrad ◽  
Roger Tourangeau
Keyword(s):  
Context Effects ◽  
Visual Context ◽  
Web Surveys

A Word-Superiority Effect in the Presence of Foveal Load

1998 ◽  
Vol 86 (3_suppl) ◽  
pp. 1311-1319 ◽  
Author(s):  
Anthony V Salvemini ◽  
Alan L. Stewart ◽  
Dean G. Purcell ◽  
Roger S. Pinkham
Keyword(s):  
Information Processing ◽  
Visual Information ◽  
Single Letter ◽  
Visual Context ◽  
Word Superiority Effect ◽  
Improve Performance ◽  
Superiority Effect ◽  
Mere Presence ◽  
The Right ◽  
Middle Letter

Foveal stimuli have been shown to disrupt visual information processing in the parafovea and periphery by their mere presence. In the present study, 6 subjects were presented letter triads 3.58° to the right or left of the point of fixation. At the same time, a single letter was presented at the point of fixation that was either the same as the middle letter in the triad or different from any of the triad letters. On other trials, no letter was presented at the point of fixation. Analysis indicated a word superiority effect when a foveal letter was presented that was the same as the letter in the triad. Performance between words and nonwords did not differ significantly when the foveal letter was different or absent. It was concluded that the mere presence of foveal load alone is not disruptive to performance. Depending on the visual context of the target to be reported, the presence of a foveal stimulus may improve performance.

Post-perceptual locus for visual context effects: ERP evidence from the Rod and Frame Illusion

2010 ◽  
Vol 6 (6) ◽  
pp. 906-906
Author(s):  
J. E. Corbett ◽  
T. C. Handy ◽  
J. T. Enns
Keyword(s):  
Context Effects ◽  
Visual Context ◽  
Perceptual Locus ◽  
Rod And Frame

scholarly journals Context effects on smooth pursuit and manual interception of a disappearing target

2017 ◽  
Vol 118 (1) ◽  
pp. 404-415 ◽  
Author(s):  
Philipp Kreyenmeier ◽  
Jolande Fooken ◽  
Miriam Spering
Keyword(s):  
Eye Movements ◽  
Smooth Pursuit ◽  
Context Effects ◽  
Hand Movement ◽  
Hand Movements ◽  
Hand Position ◽  
Visual Context ◽  
End Points ◽  
Movement Trajectories ◽  
Trial Basis

In our natural environment, we interact with moving objects that are surrounded by richly textured, dynamic visual contexts. Yet most laboratory studies on vision and movement show visual objects in front of uniform gray backgrounds. Context effects on eye movements have been widely studied, but it is less well known how visual contexts affect hand movements. Here we ask whether eye and hand movements integrate motion signals from target and context similarly or differently, and whether context effects on eye and hand change over time. We developed a track-intercept task requiring participants to track the initial launch of a moving object (“ball”) with smooth pursuit eye movements. The ball disappeared after a brief presentation, and participants had to intercept it in a designated “hit zone.” In two experiments ( n = 18 human observers each), the ball was shown in front of a uniform or a textured background that either was stationary or moved along with the target. Eye and hand movement latencies and speeds were similarly affected by the visual context, but eye and hand interception (eye position at time of interception, and hand interception timing error) did not differ significantly between context conditions. Eye and hand interception timing errors were strongly correlated on a trial-by-trial basis across all context conditions, highlighting the close relation between these responses in manual interception tasks. Our results indicate that visual contexts similarly affect eye and hand movements but that these effects may be short-lasting, affecting movement trajectories more than movement end points. NEW & NOTEWORTHY In a novel track-intercept paradigm, human observers tracked a briefly shown object moving across a textured, dynamic context and intercepted it with their finger after it had disappeared. Context motion significantly affected eye and hand movement latency and speed, but not interception accuracy; eye and hand position at interception were correlated on a trial-by-trial basis. Visual context effects may be short-lasting, affecting movement trajectories more than movement end points.

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