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ISSN : 1226-9654

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Vol.31 No.4
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Developmental Changes of Top-down Attentional Modulation in Saliency Model

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2019, v.31 no.4, pp.265-273
https://doi.org/10.22172/cogbio.2019.31.4.001


& (2019). Developmental Changes of Top-down Attentional Modulation in Saliency Model. The Korean Journal of Cognitive and Biological Psychology, 31(4), 265-273, https://doi.org/10.22172/cogbio.2019.31.4.001
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Abstract

To investigate developmental changes of top-down attentional modulation in visual saliency, the current study examined infants' eye-movements with three models: (1) the equal weight model in which all weights of low-level features are assumed to be equal, (2) the unequal weight model in which feature weights were assumed to unequal, and (3) the unequal weight model with face weight in which an additional weight was assumed for face stimuli, as well as unequal weights between low-level features. These models were fitted to 4-, 6-, and 8-month-old infants' first fixation data to estimate a set of feature weights which can best explain the data. The results showed the unequal weight model and the unequal weight model with face weight predicted infants' eye-movements more accurately than the equal weight model. Also, 6- and 8-month-old infants' eye-movements were significantly better explained by the unequal weight model with face weight than by the unequal weight model. These results suggest that low-level features contribute to the visual system with different weights and that face stimuli attract more attention as infants grow up. Our findings also highlight the importance of adjusting feature weights in studies of visual and attentional development.

keywords
상향적 주의, 하향적 주의, 현저성, 현저성 툴박스, 영아, 발달, 얼굴, bottom-up attention, top-down attention, saliency, saliency toolbox, infants, development, face

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