Exogenous and endogenous shifts of attention in perihand space
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While some studies have found that attentional orienting is altered in perihand space, most have not. One reason for such discrepancies may be related to the types of cues (uninformative and informative) that have been used, as they are known to induce different types of shifts of attention (exogenous and endogenous, respectively). To systematically address this question, two experiments were performed in which an uninformative peripheral cue (Experiment 1) or an informative central cue (Experiment 2) preceded a peripheral target with a short (100–150 ms) stimulus-onset asynchrony. Participants performed the task with their left hand, right hand, both hands, or no hands near the display. Cueing effects were obtained in both experiments, but they were only modulated by hand position in Experiment 1, with larger effects observed in the right- and both-hand conditions. These findings suggest that exogenous attention shifts are affected by hand proximity, while endogenous shifts are not.
KeywordsHand Position Invalid Trial Attentional Orienting Visual Discrimination Task Exogenous Attention
This research was supported by the Deutsche Forschungsgemeinschaft (DFG Grant Ja 747/5-1). We would like to thank Robert Proctor and Peter Wühr for helpful comments, Richard Smolka for technical assistance, and Rozeta Georgieva and Marina Meinert for running the participants.
- Cousineau, D. (2005). Confidence intervals in within-subject designs: a simpler solution to Loftus and Masson’s method. Tutorials in Quantitative Methods for Psychology, 1, 42–45.Google Scholar