Dynamic analysis of EEG signals during spatial working memory used for either perception discrimination or planning of action

Author

Protopapa, Foteini ; Mylonas, Dimitris ; Spiliotis, Konstantinos ; Siettos, Constantinos ; Smyrnis, Nikolaos ; Evdokimidis, Ioannis

Author_Institution

Nat. Tech. Univ. of Athens, Athens, Greece

fYear

2011

fDate

Aug. 30 2011-Sept. 3 2011

Firstpage

5896

Lastpage

5899

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.

Keywords

Fourier transforms; causality; electroencephalography; medical signal processing; visual perception; EEG signals; Granger causality; brain; dynamic analysis; multichannel electroencephalography; parietal cortex; perception discrimination; short time Fourier transformation; spatial working memory; visual stimulus; Brain models; Data models; Delay; Electroencephalography; Mathematical model; Visualization; Adult; Algorithms; Brain Mapping; Decision Making; Electroencephalography; Female; Humans; Intention; Male; Memory, Short-Term; Parietal Lobe; Psychomotor Performance; Space Perception;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE

Conference_Location

Boston, MA

ISSN

1557-170X

Print_ISBN

978-1-4244-4121-1

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2011.6091458

Filename

6091458