持続的注意における大脳半球機能の非対称性

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タイトル別名
  • Functional hemispheric asymmetry in sustained attention.
  • ジゾクテキ チュウイ ニ オケル ダイノウ ハンキュウ キノウ ノ ヒタイショウセイ

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This study examined the existence of functional hemispheric asymmetry in visual sustained attention in a dual-task setting. In the experiments, a circular arrangement of Gabor patches (GPs) was successively presented in the periphery during a 40-min vigil. The primary task was successive discrimination of digit type (Experiment 1) or tone frequency (Experiment 2). The secondary task was oddball orientation detection, requiring subjects to determine whether all of GPs were same or whether there was an odd one in the upper left, upper right, lower left, or lower right visual fields. Overall, results indicated that the perceptual sensitivity (A′) for the detection task was higher in the left visual field than in the right visual field. Visual field differences in the vigilance decrement (the decline in A′ over time) were observed when the primary task involved auditory discrimination. The implications for the functional lateral asymmetry in human sustained attention are discussed.

収録刊行物

  • 心理学研究

    心理学研究 72 (2), 104-112, 2001

    公益社団法人 日本心理学会

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