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Guillaume A. Rousselet, Jesse S. Husk, Patrick J. Bennett, Allison B. Sekuler; Spatial scaling factors explain eccentricity effects on face ERPs. Journal of Vision 2005;5(10):1. doi: 10.1167/5.10.1.
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Event-related potential (ERP) studies consistently have described a strong, face-sensitive response termed the N170. This component is maximal at the fovea and decreases strongly with eccentricity, a result that could suggest a foveal bias in the cortical generators responsible for face processing. Here we demonstrate that scaling stimulus size according to V1 cortical magnification factor can virtually eliminate face-related eccentricity effects, indicating that eccentricity effects on face ERPs are largely due to low-level visual factors rather than high-level cortical specialization for foveal stimuli.
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