Principal Investigator

罗欢
认知中的动态结构和时间组织及其神经机制;感知觉;注意;记忆;神经振荡;脑成像

联系电话:
通信地址: 北京市海淀区海淀路52号王克桢楼1703,100871
电子邮件:huan.luo@pku.edu.cn

    

研究兴趣:

  罗欢实验室(“动态世界观”)从事基础认知神经科学方向的研究,特别集中在研究各种认知过程中的动态结构、时间组织及其脑神经机制。主要研究手段包括高时间采样认知行为范式、脑磁图(MEG)、脑电图(EEG)。我们的研究兴趣很广,现阶段所包含的课题涉及感知觉、注意、记忆、听觉节奏等等,每一位实验室成员都有自己比较独特的方向。也欢迎新成员能带来新思路和新方向。

  我们实验室的一个研究特色是从时间这个基本维度来了解大脑处理的基本方式(而不仅仅是发生的脑区)。我们近期的一系列研究发现大脑有其自身的时间处理框架,外部的信息通过大脑内部的时间组织被整合进来,来影响甚至决定我们的认知行为。我们感兴趣通过设计心理学实验结合具有高时间分辨率的脑成像手段(比如脑电图、脑磁图等)来不断“敲打”大脑,理解大脑自身的工作方式,以及内部世界和外部世界的相互动态关系。

  如果你对时间组织,神经振荡感兴趣,可以来选罗欢老师开设的选修课《脑中的节奏》。

 

罗欢研究员2019年2月19日应邀出任国际著名杂志《eLife》编委 (Natue Index期刊)

https://elifesciences.org/about/people/neuroscience
http://news.pku.edu.cn/jxky/8f6e86653fee40eb88df52f98a9da13a.htm

罗欢研究员2019年8月应邀出任《Progress in Neurobiology》(5 year IF = 13.096) 编委

https://www.journals.elsevier.com/progress-in-neurobiology/editorial-board/huan-luo-phd

   

以下是一些我们实验室近期发表工作的总结:

  • 多物体视觉注意 (Journal of Neuroscience, 2014, 2015; PloS Biology, 2017a)

  我们发现注意是由一系列200ms左右的离散窗口连接而成,多个物体被分配在这些窗口中被序列和节奏性地进行加工处理;注意任务可以调节这种窗口的分配。

了解更多:http://pkunews.pku.edu.cn/xxfz/2018-11/14/content_305093.htm

  • 序列记忆 (eLife, 2018)

  我们发现当记忆一个序列时,在记忆保持阶段,脑活动呈现出了一种次序重演 (sequential replay)的模式,并且这种重演模式有两种有趣的时间特性(倒叙回放和时间压缩);此外,这种记忆倒叙回放模式和记忆中的 “近因效应”非常相关。

了解更多:http://www.psy.pku.edu.cn/xwzx/xyxw/310593.htm

  • 整体局部加工(PloS Biology, 2017b)

  我们发现大脑顶叶快速提取了噪声图片中的整体结构信息(global coherence),然后把这种整体结构信息沿着视觉背侧通路反向传回到初级视皮层对局部信息进行指导。

了解更多:https://www.psy.pku.edu.cn/c/school-news/5A2E1319E6E4BCB.html

    

 

代表性科研论文(*通讯作者):

1. Mo, C., Lu, J., Wu, B., Jia, J., Luo, H. *, Fang, F * (2019) Competing rhythmic neural representations of orientations during concurrent attention to multiple orientation features. Nature Communications 10: 5264.

2. Jia, J., Fang, F. *, Luo, H. * (in press) Selective spatial attention involves two alpha-band components associated with distinct spatiotemporal and functional characteristics. NeuroImage.

3. Zhang, Y.*, Zhang, Y., Cai, P., Luo, H. and Fang, F.* (in press) The causal role of alpha oscillations in feature binding. Proceedings of the National Academy of Sciences of the United States of America.

4. Huang, Q., Luo, H.* (in press) Saliency-based rhythmic coordination of perceptual predictions. Journal of Cognitive Neuroscience.

5. Han, Q.*, Luo, H.* (in press) Visual crowding involves delayed frontoparietal response and enhanced top-down modulation. European Journal of Neuroscience.

6. Liu, L.*, Luo, H.* (2019) Behavioral oscillation in global/local processing: Global alpha oscillations mediate global precedence effect. Journal of Vision 19(5):12.

7. Wang, Y., Zhang, J., Zou, J., Luo, H.*, Ding, N*, (2019) Prior knowledge guides speech segregation in human auditory cortex. Cerebral Cortex 29(4):1561-1571.

8. Huang, Q.*, Jia, J., Han, Q., Luo, H.* (2018) Fast-backward replay of sequentially memorized items in humans. eLife 7: e35164

9. Liu, L.*, Wang, F., Zhou, K., Ding, N., Luo, H.* (2017) Perceptual integration rapidly activates dorsal visual pathway to guide local processing in early visual areas. PLoS Biology 15(11): e2003646.

10. Jia, J., Liu, L., Fang, F., Luo, H.* (2017) Sequential sampling of visual objects during sustained attention. PLoS Biology 15(6): e2001903.

11. Song, K.*, Luo, H.* (2017) Temporal organization of sound information in auditory memory. Frontiers in Psychology 8:999.

12. Wang, Y., Luo, H.* (2017) Behavioral oscillation in face priming: Prediction about face identity is updated at a theta-band rhythm. Progress in Brain Research (special volume on ‘Temporal sampling and representation updating’), 236: 211-224.

13. Huang, Y., Chen, L., Luo, H.* (2015) Behavioral oscillation in priming: competing perceptual predictions conveyed in alternating theta-band rhythms. Journal of Neuroscience 35(6): 2830-2837.

14. Song, K., Meng, M., Chen, L., Zhou, K.*, Luo, H.* (2014) Behavioral oscillations in attention: rhythmic alpha pulses mediated through theta band. Journal of Neuroscience 34(14): 4837-4844.

15. Luo, H.*, Tian, X., Zhou, K., Song, K., Poeppel, D. (2013) Neural response phase tracks how listeners learn new acoustic representations. Current Biology 23(11): 968-974.

16. Luo, H.*, Poeppel, D.* (2012) Cortical oscillations in auditory perception and speech: evidence for two temporal windows in human auditory cortex. Frontiers in Psychology (3).

17. Luo, H.*, Liu, Z., Poeppel, D.* (2010) Auditory cortex tracks both auditory and visual stimulus dynamics using low-frequency neuronal phase modulation. PLoS Biology 8(8).

18. Zhou, K.*, Luo, H., Zhou T., Zhuo Y., Chen L. Topological change disturbs objects continuity in attentive tracking. Proceedings of the National Academy of Sciences of the United States of America 107(50):21920-21924.

19. Luo, H.*, Wang, Y., Poeppel, D., Simon, J.Z. (2007) Concurrent encoding of frequency and amplitude modulation in human auditory cortex: an encoding transition. Journal of Neurophysiology 98: 2473-3485.

20. Luo, H., Poeppel, D.* (2007) Phase patterns of neuronal responses reliably discriminate speech in human auditory cortex. Neuron 54(6): 1001-1010.

21. Luo, H.*, Boemio, A., Gordon, M., Poeppel, D. (2007) Perception of FM sweeps by Chinese and English listeners. Hearing Research 224: 75-83.

22Luo, H.*, Wang, Y., Poeppel, D., Simon, J.Z. (2006) Concurrent encoding of frequency and amplitude modulation in human auditory cortex: MEG evidence. Journal of Neurophysiology 96(5): 712-723.

23. Luo, H.*, Husain, F., Horwitz, B., Poeppel, D. (2005) Discrimination and categorization of speech and non-speech sounds in an MEG delayed -match-to-sample study. NeuroImage 28(1): 59-71.

24. Mo, C., Lu, J., Wu, B., Jia, J., Luo, H.*, Fang, F* (2019) Competing rhythmic neural representations of orientations during concurrent attention to multiple orientation features. Nature Communications 10: 5264.

 

    

实验室网站:

https://www.psy.pku.edu.cn/c/faculty/luo-huan.html