ディスプレイ解像度の違いが生理・心理状態に及ぼす影響

－世代間比較－

抄録

We carried out experiments to investigate the relationship between display resolution and physiological and psychological state during the viewing of 4K and 2K content on a 65-inch 4K TV as a comparison between age groups. During viewing tests of 4K scenic content by participants in their 20s and 50s, psychological evaluation scores and NIRS, an index of nervous system activity, were significantly higher during 4K scenic content viewing than for 2K viewing. However, the effect of the display resolution for content comprising video images of fine objects such as food, jewels, watches, glass and fur, was limited compared to that for scenic content between age groups. Our results suggest that content viewing at 4K tends to cause psychological elation and a surge in brain activity, although the effects varied somewhat according to content, and these effects of display resolution on physiological and psychological state were found regardless of age groups.