Miniature eye movements enhance fine spatial detail

Michele Rucci (), Ramon Iovin, Martina Poletti and Fabrizio Santini
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Michele Rucci: Boston University, Boston, Massachusetts 02215, USA
Ramon Iovin: Boston University, Boston, Massachusetts 02215, USA
Martina Poletti: Boston University, Boston, Massachusetts 02215, USA
Fabrizio Santini: Boston University, Boston, Massachusetts 02215, USA

Nature, 2007, vol. 447, issue 7146, 852-855

Abstract: An eye for detail The function of fixational eye movements, the tiny involuntary eye movements or 'retinal jitters' that occur when we fix our gaze on something, has been a matter of debate since they were first recognized in the 1950s. Using a combination of psychophysical experiments with statistical analysis of the visual signals entering the eye to counteract the visual effects of the eye movements, Rucci et al. show that without them, perception of fine-grained information is reduced. This suggests that fixational eye movements are part of a strategy used by the brain to extract fine details of visual information.

Date: 2007
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DOI: 10.1038/nature05866

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