PUB - Publikationen an der Universität Bielefeld

Autor*in

Rohde, Marieke^UniBi ; Ernst, Marc O.^UniBi

Einrichtung

Fakultät für Biologie > Kognitive Neurowissenschaften
Center of Excellence - Cognitive Interaction Technology CITEC

Stichworte

we also analyzed the strength of the recalibration effect as a function of this uncertainty. Interestingly; the time of this event had to be predicted. This was achieved using a virtual button; SEM) conditions (p<0.05). Since the prediction method contained some amount of temporal uncertainty; SEM) and in the advanced feedback (26±7ms; displayed with a Phantom force-feedback device; so finger motion could be recorded and analyzed online. An adaptive threshold predictor estimated the moment of the full compression of the button in real-time from early movement onset. We found a significant recalibration of PSS in both the delayed feedback (-16±6ms; there was a trend showing less recalibration with increasing temporal uncertainty in the predictor. Taken together these results show that visuomotor recalibrations can occur for both delayed and advanced visual stimuli; we manipulated the temporal relationship between a motor action (a button press) and a visual event (a flash) triggered by this action. The effect of recalibration to a constant delay of ±100 ms was determined using a temporal order judgment task. Participants’ perceived simultaneity (PSS) was compared before and after recalibration. To be able to present visual stimuli before the full compression of the button; which violates the underlying cause-effect relationship. To this end; Perceived simultaneity is subject to change through recalibration. Thereby; the brain compensates for small temporal discrepancies. This has been shown; irrespective of the causal asymmetry that says visual stimuli that precede a voluntary action cannot be caused by this action. This work was funded by the DFG Grant ELAPS: Embodied Latency Adaptation and the Perception of Simultaneity. The authors thank Nick Del Grosso and Michael Barnett-Cowan for their help during piloting.; e.g.; for visuoauditory; visuotactile and even for visuomotor events. Visuomotor recalibration has so far only been investigated for visual stimuli that follow voluntary motor actions. Here we ask whether visuomotor recalibration can occur in both directions; to compensate not only for visual stimuli following a motor action but also for stimuli preceding the action

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Konferenz

Annual Meeting of the Vision Science Society Meeting VSS 2012

Konferenzort

Naples, Florida

Page URI

https://pub.uni-bielefeld.de/record/2441849