The Effects of Working Memory Load on Eyeblink Activity

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  • ワーキングメモリの負荷が瞬目活動に及ぼす影響
  • ワーキング メモリ ノ フカ ガ シュンモク カツドウ ニ オヨボス エイキョウ

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Abstract

We examined the effect of working memory load on eyeblink activity, which is an index of mental activity, by manipulating working memory load using the Japanese edition of the Reading Span Test (RST). Fifteen healthy graduate and undergraduate students participated in the study. Results indicated the following, (1) The eyeblink rate while recalling 2 low load sentences and 5 very high load sentences was significantly higher than the eyeblink rate after completing recall. (2) There was no significant difference in the eyeblink rate between high and low load sentences during recall. However, the eyeblink rate after recalling 3 or 4 sentences was significantly higher than that after recalling 2 sentences. These findings suggest that a decrease in processing resources of working memory influences eyeblink activity. (3) The eyeblink rate while reading aloud with attention focused externally was significantly lower than the eyeblink while recalling and after recalling with attention focused inwardly. (4) The eyeblink rate peak occurred after receiving recall instructions, or immediately after starting recall. This suggests that processing of stimuli was completed and conscious processing using cognitive effort was performed.

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