The quiet eye without a target: The primacy of visual information processing

Klostermann, André; Kredel, Ralf; Hossner, Ernst-Joachim (2014). The quiet eye without a target: The primacy of visual information processing. Journal of Experimental Psychology: Human Perception and Performance, 40(6), pp. 2167-2178. American Psychological Association 10.1037/a0038222

Text Klostermann et al.(2014).QE without a target.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (318kB)

Motor-performance-enhancing effects of long final fixations before movement initiation – a phenomenon called Quiet Eye (QE) – have repeatedly been demonstrated. Drawing on the information-processing framework, it is assumed that the QE supports information processing revealed by the close link between QE duration and task demands concerning, in particular, response selection and movement parameterisation. However, the question remains whether the suggested mechanism also holds for processes referring to stimulus identification. Thus, in a series of two experiments, performance in a targeting task was tested as a function of experimentally manipulated visual processing demands as well as experimentally manipulated QE durations. The results support the suggested link because a performance-enhancing QE effect was found under increased visual processing demands only: Whereas QE duration did not affect performance as long as positional information was preserved (Experiment 1), in the full vs. no target visibility comparison, QE efficiency turned out to depend on information processing time as soon as the interval falls below a certain threshold (Experiment 2). Thus, the results rather contradict alternative, e.g., posture-based explanations of QE effects and support the assumption that the crucial mechanism behind the QE phenomenon is rooted in the cognitive domain.

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