S‐R compatibility effects on motor potentials associated with hand and foot movements. (6th November 2015)

• Record Type: Journal Article
• Authors: Miller, Jeff
• Is Part Of: Psychophysiology. Volume 53:Number 4(2016:Apr.)
• Page Start: 493
• Page End: 506
• Publication Date: 2015-11-06
• Subjects: EEG/ERP -- Motor processes -- Hand and foot movements -- Spatial compatibility effects; Psychophysiology -- Periodicals; 612.8
• DOI: 10.1111/psyp.12574
• Languages: English
• ISSNs: 0048-5772

Abstract

Abstract: Two four‐choice reaction time (RT) experiments used the lateralized readiness potential (LRP) and the limb selection potential (LSP) to assess the effects of spatial S‐R compatibility on motor processes. Individual stimuli were presented at one corner of a square centered at fixation, and each response was made with the left or right hand or foot. In Experiment 1, the correct response was determined by stimulus location, whereas in Experiment 2 it was determined by stimulus identity. Horizontal and vertical compatibility affected both RT and response accuracy, but the LRP and LSP results suggested that compatibility had little or no direct effect on the duration of motor processes. In addition, the results suggest that the relatively new LSP measure is a useful index of motor activation processes. Its insensitivity to horizontal stimulus artifacts makes it especially useful for studying the effects of horizontal spatial compatibility.