We thank Dick Smid for helpful comments on the development of the study design.
Behind the scenes: How visual memory load biases selective attention during processing of visual streams
Version of Record online: 9 SEP 2013
Copyright © 2013 Society for Psychophysiological Research
Volume 50, Issue 11, pages 1133–1146, November 2013
How to Cite
Klaver, P. and Talsma, D. (2013), Behind the scenes: How visual memory load biases selective attention during processing of visual streams. Psychophysiology, 50: 1133–1146. doi: 10.1111/psyp.12126
- Issue online: 21 OCT 2013
- Version of Record online: 9 SEP 2013
- Manuscript Accepted: 2 JUN 2013
- Manuscript Received: 14 AUG 2012
- Working memory;
- Contingent capture;
We recorded ERPs to investigate whether the visual memory load can bias visual selective attention. Participants memorized one or four letters and then responded to memory-matching letters presented in a relevant color while ignoring distractor letters or letters in an irrelevant color. Stimuli in the relevant color elicited larger frontal selection positivities (FSP) and occipital selection negativities (OSN) compared to irrelevant color stimuli. Only distractors elicited a larger FSP in the high than in the low memory load task. Memory load prolonged the OSN for all letters. Response mapping complexity was also modulated but did not affect the FSP and OSN. Together, the FSP data suggest that high memory load increased distractability. The OSN data suggest that memory load sustained attention to letters in a relevant color until working memory processing was completed, independently of whether the letters were in working memory or not.