This research was supported by the Max Planck Institute for Psychological Research and by a grant from the Deutsche Forschungsgemeinschaft (No. Ei 266/2–1). I thank Erich Schröger, Berry Wijers, Ron Mangun, and an anonymous reviewer for helpful comments on earlier drafts of this article and Christina Ludwig and Friederike Schlaghecken for their help in conducting the experiments.
An ERP study on visual spatial priming with peripheral onsets
Version of Record online: 30 JAN 2007
Volume 31, Issue 2, pages 154–163, March 1994
How to Cite
EIMER, M. (1994), An ERP study on visual spatial priming with peripheral onsets. Psychophysiology, 31: 154–163. doi: 10.1111/j.1469-8986.1994.tb01035.x
- Issue online: 30 JAN 2007
- Version of Record online: 30 JAN 2007
- (Received October 28, 1992; Accepted April 5, 1993)
- Visual-spatial attention;
- Event-related brain potentials;
- Processing negativity;
- Trial-by-trial cueing
Visual event-related potentials were measured for peripheral target stimuli that were preceded by a peripheral square. Targets appeared either at the same location as the square or in the opposite visual hemifield. In Experiment 1, 75% of the trials were same-location trials, and in Experiment 2, same- and opposite-location trials were equiprobable. The subject's overt response was dependent either on the identity or on the location of the target. In both experiments, opposite-location targets elicited an enhanced PI at posterior electrodes ipsilateral to the position of the letter. This enhancement may be due to a sensory inhibition of same-location targets. Same-location targets elicited an enhanced negativity between 130 and 300 ms, with a first peak located parietally and a second peak broadly distributed over midline electrodes. This effect was larger in Experiment 1 than in Experiment 2 and is interpreted as enhanced processing of same-location targets due to an attentional orienting process elicited by the peripheral square.