维普中文期刊产品整合服务
2篇 您的检索式:作者名="R.Parasuraman"
    题名 作者 年代 出处 被引量
1非意识视觉运动知觉启动的脑机制显示文摘记录正常青年人在运动知觉实验中的事件相关电位(ERPs)与功能性磁共振成像(fMRI). 结果发现某一特定方向的视觉运动知觉可以无意识地诱导其后的运动知觉偏向于同一方向;ERP早期(100ms)与晚期(350ms)成分的波幅增大;fMRI显示该早期效应反映外纹状皮层的神经调节机制,内侧颞叶(MT/MST)和顶叶内皮质的高级视觉加工区域也被激活.该结果提供了运动知觉启动效应的机制,是运动知觉刺激的方向选择性神经响应相互作用观点的直接证据,支持基于计算模型的对立的运动知觉启动理论,不支持神经反应不应期假说.罗跃嘉 姜扬 唐一源 R.Parasuraman 2001科学通报2001,46,20:7
2Neural mechanisms of unconscious visual motion priming显示文摘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 motionLUO Yuejia JIANG Yang TANG Yiyuan R.Parasuraman 2002Chinese Science Bulletin2002,47,3:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费