In the present study, we investigate possible temporal impairment in patients with mild cognitive impairment (MCI) and the amount of temporal distortions caused by the presentation of emotional facial expressions (anger, shame, and neutral) in MCI patients and controls. Twelve older adults with MCI and 14 healthy older adults were enrolled in the present study. All participants underwent a complete neuropsychological evaluation. We used three timing tasks to tap temporal abilities, namely time bisection (standard intervals lasting 400 and 1600 ms), finger-tapping (free and 1 s), and simple reaction-time tasks. The stimuli used in the time bisection task were facial emotional stimuli expressing anger or shame to investigate a possible contribution of emotional information as previously observed in healthy adults. MCI patients showed temporal abilities comparable to controls. We observed an effect of facial emotional stimuli on time perception when data were analyzed in terms of proportion of long responses, and this result was mainly driven by the temporal overestimation when a facial expression of anger was presented in controls. Results seem to suggest that the severity of the cognitive dysfunction accounts more for subjective temporal impairment than a compromised internal clock.

中文翻译：

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轻度认知障碍患者没有颞叶损伤。

在本研究中，我们调查了轻度认知障碍 (MCI) 患者可能存在的时间损伤，以及 MCI 患者和对照组因情绪面部表情（愤怒、羞耻和中性）而引起的时间扭曲程度。12 名患有 MCI 的老年人和 14 名健康老年人参加了本研究。所有参与者都接受了完整的神经心理学评估。我们使用了三个计时任务来挖掘时间能力，即时间二分（标准间隔持续 400 和 1600 毫秒）、手指敲击（自由和 1 秒）和简单的反应时间任务。时间二分任务中使用的刺激是表达愤怒或羞耻的面部情绪刺激，以调查之前在健康成年人中观察到的情绪信息的可能贡献。MCI 患者表现出与对照组相当的时间能力。当根据长反应的比例分析数据时，我们观察到面部情绪刺激对时间感知的影响，这一结果主要是由于对照组呈现愤怒的面部表情时对时间的高估所致。结果似乎表明，认知功能障碍的严重程度更多地是由于主观时间损伤而不是内部时钟受损造成的。