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首页> 外文期刊>Journal of cognitive enhancement >Modulating Subjective Time Perception with Transcranial Random Noise Stimulation (tRNS)
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Modulating Subjective Time Perception with Transcranial Random Noise Stimulation (tRNS)

机译：通过经颅随机噪声刺激（TRN）调节主观时间感知

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摘要

Understanding the neural and cognitive mechanisms underlying time estimation remains a challenge. Transcranial electric stimulations, such as transcranial random noise stimulation (tRNS), are useful tools to interfere with brain activity and identifying brain areas involved in temporal processing. Here, the aim is to investigate the specific role of primary sensory cortices (either V1 or A1) in temporal processing and to further investigate if the stimulation acts on either perceived duration or temporal sensitivity. Forty-eight university students were included in the study. Twenty-four participants were stimulated over A1, and 24 participants were stimulated over V1. All participants performed a time bisection task, either in a visual or auditory modality, involving standard durations lasting 300?ms (short) and 900?ms (long). When tRNS was delivered over A1, an effect of stimulation was observed on perceived duration (temporal over-estimation) under random stimulation compared to sham in both visual and auditory modalities. When tRNS was delivered over V1, the effect of stimulation was observed only in the visual modality (temporal over-estimation). No effect of stimulation was observed on temporal sensitivity in any condition. Our results showed for the first time that tRNS acts on modulating an individual’s perceived duration, but not on temporal sensitivity.
机译：了解时间估计的神经和认知机制仍然是一个挑战。经颅电刺激，例如经颅随机噪声刺激（TRN），是干扰大脑活动并识别涉及时间处理的大脑区域的有用工具。在这里，目的是研究原发性皮层（V1或A1）在时间处理中的特定作用，并进一步研究刺激是否对感知的持续时间或时间敏感性作用。这项研究包括48名大学生。在A1上刺激了24名参与者，在V1上刺激了24名参与者。所有参与者都以视觉或听觉方式执行了时间分配任务，涉及持续300？ms（短）和900？ms（Long）的标准持续时间。当TRN在A1上传递时，与在视觉和听觉方式中相比，在随机刺激下，在随机刺激下观察到刺激的效果。当TRN通过V1传递时，仅在视觉模态（时间过度估​​计）中观察到刺激的效果。在任何情况下，均未观察到对时间敏感性的刺激作用。我们的结果首次表明TRN作用于调节个人的感知持续时间，但不进行时间敏感性。

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