第十期 fNIRS Journal Club 通知 2020/7/25,10am

1 min read

汪待发副教授

北京时间2020年7月25日周六上午10点,北京航空航天大学的汪待发副教授,博士生导师,将为大家讲解他们组去年发表的一篇脑机交互(BCI)的近红外文章。欢迎大家参加并参与讨论。

时间: 北京时间2020年8月29日周六上午10点
地点: https://zoom.com
房间号: 889 8026 7287
密码: 496792

他要讲的文献如下:
Y. Zheng,D. Zhang, L. Wang, Y. Wang, H. Deng, S. Zhang, D. Li, D. Wang, “Resting-State-Based Spatial Filtering for an fNIRS-Based Motor Imagery Brain-Computer Interface,” in IEEE Access, vol. 7, pp. 120603-120615, 2019, doi: 10.1109/ACCESS.2019.2936434

ABSTRACT Functional near-infrared spectroscopy (fNIRS) has attracted much attention in brain-computer
interface (BCI) area due to its advantages of portability, robustness to electrical artifacts, etc. However, in practical applications, fNIRS-based BCI usually needs a labor-intensive and time-consuming training session (calibration procedure) to optimize the user-specifific neural spatial and temporal patterns for further classifification. Recently, studies revealed that neural spatial and temporal patterns extracted from user-specifific resting-state brain signals were closely related to those of his/her task data. In this study, we proposed a resting-state independent component analysis (RSICA) based spatial fifiltering algorithm aiming at extracting individual task-related spatial and temporal brain patterns from the resting-state data. Specififically, independent component analysis (ICA) was applied to extract different independent components (ICs) from resting-state fNIRS data. The ICs with their spatial fifilter weights maximally lateralized over the sensorimotor regions were regarded as most relevant to motor imagery. These spatial fifilters were used to spatially fifilter the multi-channel motor imagery task data for feature extraction. Based on 8-minute resting-state data and a small training dataset (20 trials) from 10 participants, the proposed RSICA algorithm achieved an approximately 7% increase in left vs. right hand motor imagery classifification accuracy, as compared to the conventional common spatial pattern (CSP)-based and shrinkage algorithms (69.8±12.1%, 63.3±10.3% and 63.4±11.8%, respectively). For acquiring a similar level of classifification accuracy (i.e. 70%), the number of training data required could be reduced from 36 trials (CSP) to 22 trials (RSICA). As a relatively small training set is required to obtain a satisfactory performance, training burden is signifificantly reduced by RSICA, which might be useful for developing practical fNIRS-based motor imagery BCIs.



写作助手,把中式英语变成专业英文


Want to receive new post notification? 有新文章通知我

第五十三期fNIRS Journal Club通知2024/06/22, 10am 李洪

个体在处理不同记忆负荷信息时会表现出一定的行为差异。作为一项新兴指标,瞬时脑信号变异性能够揭示个体内部因任务需求不断变化而进行的神经资源分配,从而为了解大脑如何适应和处理不同复杂程度的信息提供了新的见
Wanling Zhu
8 sec read

第五十二期fNIRS Journal Club视频 周欣博士

Youtube: https://youtu.be/U7gz3NwWcDk优酷:https://v.youku.com/v_show/id_XNjQwMTc0OTYwOA==.html 自闭症特质(A
Wanling Zhu
12 sec read

第五十二期fNIRS Journal Club通知2024/06/01, 10am 周欣博士

自闭症特质(Autistic traits)影响人与人之间的社交互动,但该影响背后的神经机制仍然有待研究。来自香港中文大学的周欣博士将分享团队利用近红外超扫描技术研究不同互动场景下脑同步与自闭特质之间
Wanling Zhu
8 sec read

Leave a Reply

Your email address will not be published. Required fields are marked *