Functional Connectivity Analysis in EEG Source Space During Deception

Somayeh Mashatan; Farnaz  Ghassemi

doi:10.18502/fbt.v9i3.9645

Somayeh Mashatan Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
Farnaz Ghassemi Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran

DOI: https://doi.org/10.18502/fbt.v9i3.9645

Keywords: Deception; Electroencephalography; Source Localization; Low-Resolution Electromagnetic Tomography; Functional Connectivity.

Abstract

Purpose: Deception is described as a deliberate endeavor to deceive others. In this research, the main purpose is to survey the brain network between deception and telling the truth.

Materials and Methods: Electroencephalography (EEG) data were collected from 17 subjects during a deception task in which the subjects had to classify the target stimuli deceptively while responding truthfully to other stimuli (non-targets). Functional Connectivity (FC) analysis was carried out in source space in order to attenuate the volume conduction effect. The coherence criterion was applied for calculating FC.

Results: The results revealed that deception is associated with significantly greater connectivity between distant regions, including frontal-occipital and frontal-parietal connectivity. In addition, Anterior Cingulate Cortex (ACC) demonstrated significantly greater connectivity with regions of the frontal and occipital lobes. Besides, deception was accompanied by high number of strong connectivity between the left parietal and frontal lobes.

Conclusions: The findings demonstrated that the FC studies in source space can strikingly assist in the investigation of deception.