Inter-trial and redundant-signals effects in visual search and discrimination tasks: separable pre-attentive and post-selective effects.

Krummenacher, J.; Grubert, A.; Müller, H.J.

Abstract

Feature singleton search is faster when the target-defining dimension is repeated, rather than changed, across trials (Found & Müller, 1996). A similar dimension repetition benefit has been observed in a non-search (discrimination) task with a single stimulus (Mortier, Theeuwes, & Starreveld, 2005). Two experiments examined whether these effects in the two tasks originate from the same or different processing stages. Experiment 1 revealed differential feature-specific effects, and Experiment 2 differential processing of dimensionally redundant target signals between the two types of task. These dissociations support the existence of separable, pre-attentive and post-selective sources of inter-trial effects in the two tasks.

Citation

Krummenacher, J., Grubert, A., & Müller, H. (2010). Inter-trial and redundant-signals effects in visual search and discrimination tasks: separable pre-attentive and post-selective effects. Vision Research, 50(14), 1382-1395. https://doi.org/10.1016/j.visres.2010.04.006

• Journal Article Type: Article
• Acceptance Date: Apr 9, 2010
• Publication Date: 2010
• Deposit Date: Jan 19, 2017
• Journal: Vision Research
• Print ISSN: 0042-6989
• Publisher: Elsevier
• Volume: 50
• Issue: 14
• Pages: 1382-1395
• DOI: https://doi.org/10.1016/j.visres.2010.04.006