In this study, we investigated the differences of brain activation between the use of allocentric reference of frames and egocentric reference of frames in a tunnel navigation task. The tunnel task provides an elegant and sufficient way to separate subjects who preferred an allocentric or egocentric representation. Our result supported the dissociation brain activity between the uses of allo- and egocentric reference of frame. Subjects who prefer to use allocentric spatial representation showed stronger activation in occipital area during path integration while egocentric subject showed stronger activation in parietal area during path integration. The distinct brain regions involved in the navigation process may reflect that the encoding of allocentric and egocentric reference frames system are associated with ventral and dorsal neural networks streams respectively.
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