Neural mechanisms of unconscious visual motion priming

作     者：LUO Yuejia JIANG Yang TANG Yiyuan R.Parasuraman 

作者机构：Institute of PsychologyChinese Academy of SciencesBeijing 100101China National Institute of Mental HealthBettesdaMD 20892USA Catholic University of AmericaWashington DC 20064USA 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2002年第47卷第3期

页      面：193-197页

核心收录：

学科分类：0402[教育学-心理学(可授教育学、理学学位）] 04[教育学] 040201[教育学-基础心理学] 

基　　金：This work was supported by the National Natural Science Foundation of China (Grant No. 30070262) Multi-disciplinary Research Program of the Chinese Academy of Sciences (CAS) (Grant No. KJCX1-07) the Hundred Talents Program of CAS and American NIH (AG 

主　　题：visual motion unconsciousness event-related potential functional MRI. 

摘      要：The neural correlates of the motion priming were examined in normal young subjects using event-related brain potentials (ERPs) and functional magnetic resonance imaging (fMRI). Visual motion perception can be uncon-sciously biased in favor of a particular direction by a pre-ceding motion in that direction. Motion priming first in-volved an enhancement of ERP amplitude about 100 ms fol-lowing the onset of motion. The amplitudes of ERP compo-nents after 350 ms were also increased. The fMRI results suggest that the early-latency effect reflects modulation of neural responses in extrastriate cortex. Higher-level visual processing areas, including cortical regions MT/MST and the intraparietal cortices were also activated. The findingsprovide direct evidence that unconscious priming of motion perception is the result of interaction of direction-selective neural responses to motion stimuli. The results cannot be accounted for by refractoriness of neural responses, but in-stead support a theory of motion