title: Dynamic analysis of EEG signals during spatial working memory used for either perception discrimination or planning of action.
abstract: We analysed multi-channel electroencephalographic (EEG) recordings during a spatial Working Memory (WM) task in order to test the hypothesis that segmentation of perception and action is present when the visual stimulus has been stored in spatial WM. To detect the interactions between different regions of the brain depending on the task we employed both Short Time Fourier Transformation (STFT) and the concept of Granger Causality (GC). Our computational analysis supports evidence that the Parietal Cortex (PC) is involved in WM processing.
authors.affiliation: National Technical University of Athens, Athens GR 157 80, Greece.
authors.forename: Foteini
authors.initials: F
authors.lastname: Protopapa
authors.forename: Dimitris
authors.initials: D
authors.lastname: Mylonas
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Spiliotis
authors.forename: Constantinos
authors.initials: C
authors.lastname: Siettos
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Smyrnis
authors.forename: Ioannis
authors.initials: I
authors.lastname: Evdokimidis
mesh_terms: D000328:Adult; D000465:Algorithms; D001931:Brain Mapping / Q000379:methods*; D003657:Decision Making / Q000502:physiology*; D004569:Electroencephalography / Q000379:methods*; D005260:Female; D006801:Humans; D033182:Intention; D008297:Male; D008570:Memory, Short-Term / Q000502:physiology*; D010296:Parietal Lobe / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*; D013028:Space Perception / Q000502:physiology*