Observing repetitive finger movements modulates response times of auditorily cued finger movements |
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Authors: | Biermann-Ruben Katja Jonas Melanie Kessler Klaus Siebner Hartwig Roman Bäumer Tobias Schnitzler Alfons Münchau Alexander |
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Institution: | University Hospital Duesseldorf, Neurology, MEG Laboratory, Düsseldorf, Germany. K.Biermann-Ruben@uni-duesseldorf.de |
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Abstract: | Our motor and perceptual representations of actions seem to be intimately linked and the human mirror neuron system (MNS) has been proposed as the mediator. In two experiments, we presented biological or non-biological movement stimuli that were either congruent or incongruent to a required response prompted by a tone. When the tone occurred with the onset of the last movement in a series, i.e., it was perceived during the movement presentation, congruent biological stimuli resulted in faster reaction times than congruent non-biological stimuli. The opposite was observed for incongruent stimuli. When the tone was presented after visual movement stimulation, however, no such interaction was present. This implies that biological movement stimuli only affect motor behaviour during visual processing but not thereafter. These data suggest that the MNS is an "online" system; longstanding repetitive visual stimulation (Experiment 1) has no benefit in comparison to only one or two repetitions (Experiment 2). |
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Keywords: | Finger movement Online processing Mirror neuron system Sensory interaction Compatibility Reaction time task |
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