碩士 / 國立交通大學 / 生醫工程研究所 / 97 / In this study, we built the 3D virtual environment of simple structure mazes to study the human’s ability of spatial navigation while the human navigated in the virtual mazes by using different typical landmarks. We considered the influence of different typical landmarks without considering the feature of structure. Different typical landmarks affected the performance of navigation. The global landmarks played the role of effective guidance. Subjects wasted more redundant walking paths in the virtual environment of local landmarks. The entire trend of performance presented improvement in the behavioral experiment. In the brain activity experiment, the brain dynamics was recorded while the subjects navigated in the virtual mazes. We researched the effect of landmarks to affect spatial cognitive function by physiological signals, such as brain waves. We investigated electroencephalography (EEG) dynamics in responses to spatial navigation. The EEG channel signals were separated into independent brain sources by using the independent component analysis (ICA). The results showed the theta oscillations which appeared during navigating the maze with the global or the local landmarks. The theta power of the frontal midline showed increase. In addition, the theta power of the frontal midline was presented the significant difference between the global condition and the local condition during spatial navigation by using permutation tests.
| Identifer | oai:union.ndltd.org:TW/097NCTU5723019 |
| Date | January 2009 |
| Creators | Chang, Shu-Yen, 張書彥 |
| Contributors | Lin, Chin-Teng, 林進燈 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | en_US |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 65 |
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