The EEG Correlates of the Allocentric and the Egocentric Spatial Reference Frames Processing

摘要

In the paper we describe current results of our ongoing research, concerning the navigation in the virtual tunnel task and its EEG correlates. We searched for the features in the EEG signal to discriminate the employment of the allocentric and the egocentric reference frames. These two reference frames differ in the center of deixis (the origin of the coordinating system). Our sample comprised groups that tend to solve the task by adopting one of the mentioned reference frames. We decomposed the EEG signal to the basic features and used this data as the input for the neural networks. The classification task is to select the best features to discriminate between these reference frames. The result was congruent with the similar study (Gramann et al., 2006) in the Brodmann area 7 differences, but we also detected other brain areas involved in this task.