Assessment of spatial memory using virtual invironmentsстатьяТезисы
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 26 января 2018 г.
Аннотация:In previously studies it was shown the existence of two types of spatial mental representations: egocentric spatial representations (ESR) which encode self-to-object spatial information and allocentric spatial representations (ASR) encoding object-to-object spatial information. In our study the accuracy of ESR and ASR systems has been investigated using the CAVE virtual reality technology. 6 unique virtual scenes consisting of 7 objects located in different 3D positions were constructed. 36 observers were tested. The participant’s task was to remember virtual objects and their locations and then to reproduce a memorized scene in a virtual space using one of three imagined viewer’s positions: 1) the front view (as if they would view the scene from the original view point), 2) the left one (the scene viewed from the left) and 3) the above one (viewed from above). To complete the task the participants chose virtual objects from the object’s library and placed them in a virtual space using a flystik. During the execution object’s locations in virtual space were recorded. The accuracy of spatial representations (perceived metric, topology and depth) was evaluated for each of three imagined viewer’s positions. The results showed the topological accuracy was much better than the metric and depth accuracy. The ESR characteristics (the front view) were more accurate than ASR ones (left and above views). The developed method may be effective to measure the features of two types of spatial representations.
The study was funded by Russian Scientific Fund project № 15-18-00109.