Cognitive fatigue (CF) can lead to an increase in the latency of simple reaction time, although the processes involved in this delay are unknown. One potential explanation is that a longer time may be required for sensory processing of relevant stimuli. To investigate this possibility, the current study used a visual inspection time task to measure perceptual processing speed before and after a CF (math and memory) or non-fatiguing (documentary film) intervention. Subjective fatigue and simple reaction time significantly increased following the CF, but not the non-fatiguing intervention, confirming that CF was induced. Conversely, there was no effect of CF on inspection time task performance. It was therefore concluded that the speed of perceptual processing is not significantly impacted by CF, and thus is unlikely to underlie CF-related reaction time increases. Instead, increases in simple reaction time latency in CF may be due to delays in response preparation or initiation.

中文翻译：

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视觉感知处理不受认知疲劳的影响

认知疲劳（CF）会导致简单反应时间延迟的增加，尽管这种延迟所涉及的过程尚不清楚。一种可能的解释是，相关刺激的感官处理可能需要更长的时间。为了调查这种可能性，当前的研究使用视觉检查时间任务来测量 CF（数学和记忆）或非疲劳（纪录片）干预前后的感知处理速度。 CF 后主观疲劳和简单反应时间显着增加，但非疲劳干预后没有增加，证实 CF 被诱发。相反，CF 对检查时间任务绩效没有影响。因此得出的结论是，感知处理的速度不会受到 CF 的显着影响，因此不太可能成为与 CF 相关的反应时间增加的基础。相反，CF 中简单反应时间延迟的增加可能是由于响应准备或启动的延迟造成的。