標題: EEG-based Spatial Navigation Estimation in a Virtual Reality Driving Environment
作者: Lin, Chin-Teng
Yang, Fu-Shu
Chiou, Te-Chung
Ko, Li-Wei
Duann, Jeng-Ren
Gramann, Klaus
腦科學研究中心
Brain Research Center
關鍵字: spatial navigation;allocentric;egocentric;reference frame;electroencephalograph (EEG)
公開日期: 2009
摘要: The aim of this study is to investigate the difference of EEC dynamics on navigation performance. A tunnel task was designed to classify subjects into allocentric or egocentric spatial representation users. Despite of the differences of mental spatial representation, behavioral performance in general were compatible between the two strategies subjects in the tunnel task. Task-related EEC dynamics in power changes were analyzed using independent component analysis (ICA), time-frequency and non-parametric statistic test. ERSP image results revealed navigation performance-predictive EEG activities which is is expressed in the parietal component by source reconstruction. For egocentric subjects, comparing to trails with well-estimation of homing angle, the power attenuation at the frequencies from 8 to 30 Hz (around alpha and beta band) was stronger when subjects overestimated homing directions, but the attenuated power was decreased when subjects were underestimated the homing angles. However, we did not found performance related brain activities for allocentric subjects, which may due to the functional dissociation between the use of allo- and egocentric reference frames.
URI: http://hdl.handle.net/11536/17372
http://dx.doi.org/10.1109/ESSDERC.2009.5331472
ISBN: 978-1-4244-4294-2
DOI: 10.1109/ESSDERC.2009.5331472
期刊: 2009 9TH IEEE INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOENGINEERING
起始頁: 435
結束頁: 438
顯示於類別:會議論文