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- W2050768558 abstract "The development of motion processing is a critical part of visual development, allowing children to interact with moving objects and navigate within a dynamic environment. However, global motion processing, which requires pooling motion information across space, develops late, reaching adult-like levels only by mid-to-late childhood. The reasons underlying this protracted development are not yet fully understood. In this study, we sought to determine whether the development of motion coherence sensitivity is limited by internal noise (i.e., imprecision in estimating the directions of individual elements) and/or global pooling across local estimates. To this end, we presented equivalent noise direction discrimination tasks and motion coherence tasks at both slow (1.5°/s) and fast (6°/s) speeds to children aged 5, 7, 9 and 11 years, and adults. We show that, as children get older, their levels of internal noise reduce, and they are able to average across more local motion estimates. Regression analyses indicated, however, that age-related improvements in coherent motion perception are driven solely by improvements in averaging and not by reductions in internal noise. Our results suggest that the development of coherent motion sensitivity is primarily limited by developmental changes within brain regions involved in integrating motion signals (e.g., MT/V5)." @default.
- W2050768558 created "2016-06-24" @default.
- W2050768558 creator A5010278223 @default.
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- W2050768558 date "2014-10-01" @default.
- W2050768558 modified "2023-09-26" @default.
- W2050768558 title "Averaging, not internal noise, limits the development of coherent motion processing" @default.
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- W2050768558 doi "https://doi.org/10.1016/j.dcn.2014.07.004" @default.
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