title: Effects of response sequence length on motor programming: a chronometric analysis.
abstract: The present experiment studied choice response context effects on the programming of response sequences using behavioural and electrophysiological methods. Participants were asked to produce responses differing in sequence length (1-key vs. 3-key responses) with either their left or right hand in a choice reaction time (RT) task. The choice response context was manipulated by a blocked or mixed execution of 1-key and 3-key responses. A sequence length effect on RT was observed in the blocked but not in the mixed condition. The time course of the lateralized readiness potential indicates a motoric locus of the sequence length effect, suggesting that the response hand is activated before the entire motor program is established.
authors.affiliation: Cognitive and Biological Psychology, University of Tübingen, Friedrichstrasse 21, 72072 Tübingen, Germany. hannes.schroeter@uni-tuebingen.de
authors.forename: Hannes
authors.initials: H
authors.lastname: Schröter
authors.forename: Hartmut
authors.initials: H
authors.lastname: Leuthold
mesh_terms: D000328:Adult; D002755:Choice Behavior; D003265:Contingent Negative Variation; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D008960:Models, Psychological; D011597:Psychomotor Performance / Q000502:physiology*; D011603:Psychophysiology; D011930:Reaction Time / Q000502:physiology*; D013997:Time Factors