Versace Francesco, Cavallero Corrado, De Min Tona Giuliano, Mozzato Manola, Stegagno Luciano
Department of Psychology, University of Trieste, Via S. Anastasio 12, 34134 Trieste, Italy.
Biol Psychol. 2006 Mar;71(3):248-55. doi: 10.1016/j.biopsycho.2005.04.003. Epub 2005 Jun 22.
To investigate the effects exerted by sleep loss on specific attentive components the performance to a simple reaction time task and to a cued reaction time task were recorded at regular intervals during days following either 8 or 3 h of uninterrupted sleep. Eleven subjects took part in the experiment. The results show that, notwithstanding a general reduction of alertness produced by sleep curtailment (as indicated by the increase of reaction times in the simple reaction time task), in the cued reaction time task only the reaction times to invalidly cued targets significantly increase, while no difference is observed when attention is summoned by a valid cue. This result suggests that the mechanisms underlying orienting of attention are differentially affected by the reduction of alertness level.
为了研究睡眠缺失对特定注意力成分的影响，在连续8小时或3小时不间断睡眠后的数天里，定期记录受试者在简单反应时任务和线索反应时任务中的表现。11名受试者参与了该实验。结果表明，尽管睡眠减少会导致整体警觉性下降（如简单反应时任务中反应时间增加所示），但在线索反应时任务中，只有对无效线索提示目标的反应时间显著增加，而当有效线索唤起注意力时则未观察到差异。这一结果表明，注意力定向的潜在机制受到警觉性水平降低的影响各不相同。
