The effort to close the gap: Tracking the development of illusory contour processing from childhood to adulthood with high-density electrical mapping

摘要: The adult human visual system can efficiently fill-in missing object boundaries when low-level information from the retina is incomplete, but little known about how these processes develop across childhood. A decade of visual-evoked potential (VEP) studies has produced a theoretical model identifying distinct phases contour completion in adults. first, termed perceptual phase, occurs approximately 100-200 ms and associated with automatic boundary completion. second conceptual phase occurring between 230 400 ms. latter been analysis ambiguous objects which seem to require more effort complete. electrophysiological markers have both localized lateral occipital complex, cluster ventral stream brain regions object-processing. We presented Kanizsa-type illusory stimuli, often used for exploring processes, neurotypical persons ages 6-31 (N=63), while parametrically varying spatial extent induced contours, order better understand filling-in childhood adolescence. Our results suggest that, adults complete single discrete period during children display an immature response pattern-engaging protracted processing timeframes appearing recruit widely distributed resemble those evoked higher-order figures. However, older than 5years age were remarkably like that effects invariant manipulation extent.