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The effects of endogenous and exogenous spatial cueingin a sustained attention task

机译:持续注意任务中内源性和外源性空间提示的影响

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摘要

Sustained attention is the ability to maintain the focus ofcognitive activity on a given stimulation source or taskover an extended period of time (Ballard 1996). Experi-ments on sustained attention have been conducted usingspecific tasks, such as the continuous performance task(CPT), which requires subjects to monitor a continuouspresentation of symbols, detecting critical signals (e.g. theletter "X") occurring infrequently or randomly, andinhibiting any response to distracters (Rosvolt et al. 1956).The CPT allows measuring both the vigilance level and thevigilance decrement through the increase of response time(RT) over trials.
机译:持续的注意力是在较长的时间内将认知活动的焦点保持在给定刺激源或任务上的能力(Ballard 1996)。使用特定任务进行了持续关注的实验,例如连续执行任务(CPT),该任务要求受试者监视符号的连续表示,检测不频繁或随机出现的关键信号(例如字母“ X”)并抑制任何响应(Rosvolt et al。1956)。CPT允许通过提高试验的响应时间(RT)来测量警戒水平和警戒程度的降低。

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