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Beneficial effects of ambiguous precues: Parallel motor preparation or reduced premotoric processing time?

Research output: Contribution to journalArticle


Ines Jentzsch, H Leuthold, KA Ridderinkhof

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The present study was designed to investigate the mechanisms underlying movement preprogramming in situations where informative but ambiguous precue information is used. In a response preening task that involved flexi on or extension movements with the right or left index finger, a spatially compatible precue conveyed partial information about side, about direction, no parameter information (ambiguous condition), or no information at all. Advance movement preparation was indicated by reaction-time shortening for all informative precue conditions. The analysis of stimulus- and response-locked lateralized readiness potential onsets revealed a clear and exclusive motoric origin of the ambiguous-precue benefit. Additional analyses ruled out a strategic trial by trial choice of just one of the two ambiguous alternatives and provided evidence for a parallel preparation of both response alternatives when information only about direction or ambiguous precue information is provided.



Original languageEnglish
Pages (from-to)231-244
Number of pages14
Issue number2
Publication statusPublished - Mar 2004

    Research areas

  • movement preparation, preening paradigm, lateralized readiness potential, LRP, contingent negative variation, CNV, ambiguous precues, ADVANCE MOVEMENT PREPARATION, BRAIN POTENTIALS, LRP ONSET, RESPONSE FORCE, DIRECTION, INFORMATION, EXTENT, ARM, ATTENTION, OVERLAP

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