Time-frequency distribution properties of event-related potentials in mental fatigue induced by visual memory tasks
文献类型：期刊论文
| 作者 | Liu, Xinyang1,2; Liu, Juntao1; Gai, Shuping1,2; Meyer, Kristina3; Xu, Shengwei1,2; Cai, Xinxia1,2 |
| 刊名 | Neuroreport
 |
| 出版日期 | 2016-09-28 |
| 卷号 | 27期号:14页码:1031-1036 |
| 关键词 | Event-related potentials Memory Mental fatigue Time-frequency analysis |
| ISSN号 | 0959-4965 |
| DOI | 10.1097/wnr.0000000000000651 |
| 通讯作者 | Cai, xinxia(xxcai@mail.ie.ac.cn) |
| 英文摘要 | Prolonged periods of demanding cognitive tasks lead to an exhausted feeling known as mental fatigue. the neural underpinnings of mental fatigue are still under exploration. in the present study, we aimed to identify neurophysiological indicators of mental fatigue by studying the time-frequency distribution of the event-related potentials (erps) measured in n=26 adults in nonfatigued versus fatigued states. we were interested in the frontal theta and occipital alpha variations, which have shown consistent relationships with mental fatigue in previous studies. furthermore, we expected differential changes in left and right electrodes, in line with previously detected lateralization effects in cognitive tasks. mental fatigue was induced by a sustained two-back verbal visual memory task for 125min and assessed using the chalder fatigue scale. we applied a high-resolution time-frequency analysis method called smoothed pseudo wigner ville distribution and used regional integrals as indicators for changing trends of signal energy. results showed an increase in erp frontal theta energy (p=0.03) and a decrease in occipital alpha energy (p=0.028) when participants became mentally fatigued. the change in frontal theta was more pronounced in left electrode sites (p=0.032), hinting toward a differential fatigue effect in the two hemispheres. the results were discussed on the basis of previous lateralization studies with memory tasks and interpreted as an indicator of a causal relationship between the sustained task execution and the physiological changes. our findings also suggest that the erp signal energy variations in frontal theta and occipital alpha might be used as neural biomarkers to assess mental fatigue. |
| WOS关键词 | DIFFICULTY ; TRANSFORM ; CORTEX ; SLEEP ; ALPHA |
| WOS研究方向 | Neurosciences & Neurology |
| WOS类目 | Neurosciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000384454500006 |
| 出版者 | LIPPINCOTT WILLIAMS & WILKINS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375926 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Cai, Xinxia |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Transducer Technol, Inst Elect, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Ernst Moritz Arndt Univ Greifswald, Dept Psychol, Greifswald, Germany |
| 推荐引用方式 GB/T 7714 | Liu, Xinyang,Liu, Juntao,Gai, Shuping,et al. Time-frequency distribution properties of event-related potentials in mental fatigue induced by visual memory tasks[J]. Neuroreport,2016,27(14):1031-1036. |
| APA | Liu, Xinyang,Liu, Juntao,Gai, Shuping,Meyer, Kristina,Xu, Shengwei,&Cai, Xinxia.(2016).Time-frequency distribution properties of event-related potentials in mental fatigue induced by visual memory tasks.Neuroreport,27(14),1031-1036. |
| MLA | Liu, Xinyang,et al."Time-frequency distribution properties of event-related potentials in mental fatigue induced by visual memory tasks".Neuroreport 27.14(2016):1031-1036. |
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来源：中国科学院大学
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