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    The lateralized readiness potential as an on-line measure of automatic response activation in S-R compatibility situations

    Eimer, Martin (1996) The lateralized readiness potential as an on-line measure of automatic response activation in S-R compatibility situations. In: Hommel, B. and Prinz, W. (eds.) Theoretical issues in stimulus-response compatibility. Advances in Psychology 118. Elsevier, pp. 51-73. ISBN 9780080542768.

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    The Lateralized Readiness Potential (LRP) is an electrophysiological indicator of partial response activation. A number of experiments are reported where the LRP was measured in order to obtain evidence for automatic response activation processes elicited in S-R compatibility situations. In the first series of experiments, a cue-target paradigm was employed and the LRP was measured in response to the cue. When arrows were used as cues, an early activation of the response corresponding to the arrow’s direction was observed, which was largely independent of objective cue-response contingencies, presumably indicating an involuntary process. No such effect was observed when non-spatial cues (colored squares) were used or when the cue was unattended. A second series of experiments was conducted to demonstrate that due to systematic confoundations of motor and non-motor asymmetries, LRPs elicited by lateralized target stimuli cannot be interpreted unequivocally in terms of response activation. Therefore, an alternative paradigm is introduced where colored arrows are used as target stimuli, with arrow color relevant and arrow direction irrelevant for response selection. The LRPs revealed an early activation of responses spatially congruent to the arrow’s direction. Overall, the experiments show that when the various confoundations of motor and non-motor effects on the LRP are effectively dealt with, the LRP may be a useful tool for studying automatic response activation processes in S-R compatibility situations. Book synopsis: This book gathers together 10 important integrative theoretical approaches to stimulus-response compatibility, a field of special interest for the more general question of how human perception and action interact. The approaches, presented by their most active and influential proponents, as well as the sharp and critical commentaries also included in the book, cover a wide range of theoretical schools of thought and a rich body of empirical data. These highly stimulating papers and sharp comments offer both the theoretically interested professional and the student reader not only a comprehensive overview of the state of the art, but excellent insights into work in progress as well. This volume is an important contribution to the deeper understanding of the sensory-motor interface.


    Item Type: Book Section
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Psychological Sciences
    Depositing User: Sarah Hall
    Date Deposited: 17 Dec 2019 12:05
    Last Modified: 02 Aug 2023 17:56


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