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Article Dans Une Revue Neuropsychologia Année : 2011

Coherent illusory contours reduce microsaccade frequency

Résumé

Synchronized high-frequency gamma band oscillations (30–100 Hz) are thought to mediate the binding of single visual features into whole-object representations. For example, induced gamma band oscillations (iGBRs) have been recorded ∼280 ms after the onset of a coherent Kanizsa triangle, but not after an incoherent equivalent shape. However, several recent studies have provided evidence that the EEG-recorded iGBR may be a by-product of small saccadic eye movements (microsaccades). Considering these two previous findings, one would hypothesis that there should be more microsaccades following the onset of a coherent Kanizsa triangle. However, we found that microsaccade rebound rate was significantly higher after an incoherent triangle was presented. This result suggests that microsaccades are not a reliable indicator of perceptual binding, and, more importantly, implies that iGBR cannot be universally produced by ocular artefacts.

Domaines

Neurosciences
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Dates et versions

hal-01599669 , version 1 (03-10-2017)

Identifiants

Citer

Alexis. D.J. Makin, Rochelle Ackerley, Kelly Wild, Ellen Poliakoff, Emma Gowen, et al.. Coherent illusory contours reduce microsaccade frequency. Neuropsychologia, 2011, 49 (9), pp.2798-2801. ⟨10.1016/j.neuropsychologia.2011.06.001⟩. ⟨hal-01599669⟩
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