Perception action interaction: the oblique effect in the evolving trajectory of arm pointing movements

Experimental Brain Research
Asimakis MantasN Smyrnis

Abstract

In previous studies, we provided evidence for a directional distortion of the endpoints of movements to memorized target locations. This distortion was similar to a perceptual distortion in direction discrimination known as the oblique effect so we named it the "motor oblique effect". In this report we analyzed the directional errors during the evolution of the movement trajectory in memory guided and visually guided pointing movements and compared them with directional errors in a perceptual experiment of arrow pointing. We observed that the motor oblique effect was present in the evolving trajectory of both memory and visually guided reaching movements. In memory guided pointing the motor oblique effect did not disappear during trajectory evolution while in visually guided pointing the motor oblique effect disappeared with decreasing distance from the target and was smaller in magnitude compared to the perceptual oblique effect and the memory motor oblique effect early on after movement initiation. The motor oblique effect in visually guided pointing increased when reaction time was small and disappeared with larger reaction times. The results are best explained using the hypothesis that a low level oblique effect is present ...Continue Reading

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Citations

Apr 12, 2013·Experimental Brain Research·Ravindra Baldeo, Denise Henriques
May 11, 2011·Psychological Research·Jan Zwickel, Wolfgang Prinz
Apr 4, 2014·Experimental Brain Research·Nikolaos SmyrnisIoannis Evdokimidis
May 24, 2008·Journal of Neurophysiology·John D KoehnJason J S Barton

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