Human brain dynamics accompanying use of egocentric and allocentric reference frames during navigation.
Human brain dynamics accompanying use of egocentric and allocentric reference frames during navigation.
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DOI：
10.1162/jocn.2009.21369
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发表时间：
2010-12
影响因子：
3.2
通讯作者：
Makeig S
中科院分区：
文献类型：
--
作者：
Gramann K;Onton J;Riccobon D;Mueller HJ;Bardins S;Makeig S
在旅行时保持空间取向需要将从自我中心的观点遇到的空间信息与在自我中心和/或非自我中心的参考框架内表示的累积信息整合。在这里，我们报告的高密度脑电图活动的变化，在虚拟隧道通道任务中，受试者响应导航后归航的挑战，在明显不同的方式，无论是兼容的虚拟环境的持续经验，从一个完全自我中心的角度来看，或者好像还保持其原始的入口方向，表明使用一个平行的allocentric参考系。通过空间滤波的EEG数据，使用独立成分分析，我们发现，这两个平等的主题亚组表现出的差异，在隧道通道期间，只有少数皮层区域的EEG功率谱调制。在隧道转向，较强的α阻滞只发生在或附近的主题，其归巢反应是兼容的继续使用一个自我中心的参考框架的右初级视觉皮层。相比之下，在隧道转向，响应的方式兼容使用一个allocentric参考框架的受试者表现出更强的α阻断枕颞，双侧下顶叶，和压后皮质区，所有涉及的领域的血流动力学成像和神经心理学观察的建设和维护allocentric参考框架。我们的结论是，在这些科目中，更强的激活后压和相关的皮质区在轮流支持自我中心的经验丰富的视觉流到他们的虚拟位置和运动的allocentric模型的连续翻译。
Maintaining spatial orientation while travelling requires integrating spatial information encountered from an egocentric viewpoint with accumulated information represented within egocentric and/or allocentric reference frames. Here, we report changes in high-density EEG activity during a virtual tunnel passage task in which subjects respond to a postnavigation homing challenge in distinctly different ways—either compatible with a continued experience of the virtual environment from a solely egocentric perspective or as if also maintaining their original entrance orientation, indicating use of a parallel allocentric reference frame. By spatially filtering the EEG data using independent component analysis, we found that these two equal subject subgroups exhibited differences in EEG power spectral modulation during tunnel passages in only a few cortical areas. During tunnel turns, stronger alpha blocking occurred only in or near right primary visual cortex of subjects whose homing responses were compatible with continued use of an egocentric reference frame. In contrast, approaching and during tunnel turns, subjects who responded in a way compatible with use of an allocentric reference frame exhibited stronger alpha blocking of occipito-temporal, bilateral inferior parietal, and retrosplenial cortical areas, all areas implicated by hemodynamic imaging and neuropsychological observation in construction and maintenance of an allocentric reference frame. We conclude that in these subjects, stronger activation of retrosplenial and related cortical areas during turns support a continuous translation of egocentrically experienced visual flow into an allocentric model of their virtual position and movement.
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影响因子：
2.9
作者：
Gramann, K.;Mueller, H. J.;Debus, G.
通讯作者：
Debus, G.
DOI：
10.1089/109493103769710514
发表时间：
2003-10-01
期刊：
CYBERPSYCHOLOGY & BEHAVIOR
影响因子：
--
作者：
Bischof, WF;Boulanger, P
通讯作者：
Boulanger, P
影响因子：
64.8
作者：
Ekstrom, AD;Kahana, MJ;Fried, I
通讯作者：
Fried, I
DOI：
10.1037/0096-1523.31.6.1199
发表时间：
2005-12-01
影响因子：
2.1
作者：
Gramann, K;Müller, HJ;Schönebeck, B
通讯作者：
Schönebeck, B
影响因子：
2.5
作者：
Freeman, WJ;Barrie, JM
通讯作者：
Barrie, JM