C-01 複数目標探索によるボトムアップ処理特性の検討

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  • C-01 An examination of characteristic of bottom-up processing in featuredefined multiple targets search task
  • 複数目標探索によるボトムアップ処理特性の検討
  • フクスウ モクヒョウ タンサク ニ ヨル ボトムアップ ショリ トクセイ ノ

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Three experiments examined the effect of top-down information on reduction of bottom-up activity in modified visual feature search tasks: target detection, target discrimination, and homogeneity judgement tasks. Efficiency of bottom-up information is manipulated by varying the number of targets in a display. Results showed that search time for targets was influenced by the number of targets, suggesting that a singleton is not a useful bottom-up source for visual search. Search time was changed as a function of tasks. This suggests that top-down processing is also involved and that weighting of it depends on the task.

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