スマートフォンサイズの画面に提示された情景の倒立効果: 事象関連電位による探索的検討
DOI:
https://doi.org/10.51094/jxiv.6939キーワード:
情景知覚、 情景倒立効果、 スマートフォンサイズモニタ、 事象関連電位抄録
情景は全体的処理により速やかに意味が抽出されることが知られており,その全体的処理の性質は倒立効果に反映されると考えられている。情景倒立に対する事象関連電位(ERP)も検討され,早期の知覚処理段階からの効果が報告されている。一方,日常的に用いられるスマーフォンのような小型画面で観察する際の情景処理過程は明らかでない。本研究は,スマートフォンサイズの画面を近距離で観察する際の情景倒立効果を同定することを目的とした。自然情景画像の正立・倒立に対するERPを測定し,データ駆動型の方法で解析した。また,通常サイズのPCモニタを遠距離で観察する条件も設けた。その結果,両条件で約200–270 msに後方部で正立画像に対して倒立画像よりも陽性になる,潜時帯と頭皮上分布が先行研究と類似する効果が認められた。また,遠距離条件ではより早期に,近距離条件ではより後期にも倒立効果が認められた。ただし,モニタの物理的特性の違いが結果に及ぼした影響を排除できない。本研究は,スマートフォンサイズの画面を近距離で観察する際にも情景倒立効果が生じることを示した。今後は,モニタや情景の特性,観察条件を系統的に操作し,日常的な表示環境における情景処理のあり方を明らかにすることが求められる。
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投稿日時: 2026-10-24 07:46:41 UTC
公開日時: 2026-11-06 01:39:49 UTC
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大川, 翔吏
小林, 慧
河西, 哲子
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