This study was supported by grant P 22189-B18 of the Austrian Science Fund (FWF), a grant from the European Union within the 6th Framework Programme (Project 517590; EYE-to-IT), and by a grant of the state government of Styria (Project PN 4055; NeuroCenter Styria).
Sequential effects in continued visual search: Using fixation-related potentials to compare distractor processing before and after target detection
Article first published online: 11 FEB 2014
© 2014 The Authors. Psychophysiology published by Wiley Periodicals, Inc. on behalf of Society for Psychophysiological Research.
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Volume 51, Issue 4, pages 385–395, April 2014
How to Cite
Körner, C., Braunstein, V., Stangl, M., Schlögl, A., Neuper, C. and Ischebeck, A. (2014), Sequential effects in continued visual search: Using fixation-related potentials to compare distractor processing before and after target detection. Psychophysiology, 51: 385–395. doi: 10.1111/psyp.12062
- Issue published online: 12 MAR 2014
- Article first published online: 11 FEB 2014
- Manuscript Accepted: 8 APR 2013
- Manuscript Received: 31 MAR 2012
- Austrian Science Fund (FWF). Grant Number: P 22189-B18
- European Union within the 6th Framework Programme. Grant Number: 517590
- State government of Styria. Grant Number: PN 4055
- Serial visual search;
- Eye movements;
- Fixation-related potential;
- Sequential effects
To search for a target in a complex environment is an everyday behavior that ends with finding the target. When we search for two identical targets, however, we must continue the search after finding the first target and memorize its location. We used fixation-related potentials to investigate the neural correlates of different stages of the search, that is, before and after finding the first target. Having found the first target influenced subsequent distractor processing. Compared to distractor fixations before the first target fixation, a negative shift was observed for three subsequent distractor fixations. These results suggest that processing a target in continued search modulates the brain's response, either transiently by reflecting temporary working memory processes or permanently by reflecting working memory retention.