Functional Connectivity Pattern Analysis Underlying Neural Oscillation Synchronization during Deception.

Peng Liu,Shumei Ji,Hongkui Shen

doi:10.1155/2019/2684821

Peng Liu, Shumei Ji + Show 1 more

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https://doi.org/10.1155/2019/2684821

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Abstract

To characterize system cognitive processes during deception, event-related coherence was computed to investigate the functional connectivity among brain regions underlying neural oscillation synchronization. In this study, 15 participants were randomly assigned to honesty or deception groups and were instructed to tell the truth or lie when facing certain stimuli. Meanwhile, event-related potential signals were recorded using a 64-channel electroencephalography cap. Event-related coherence was computed separately in four frequency bands (delta (1-3.5 Hz), theta (4-7 Hz), alpha (8-13 Hz), and beta (14-30 HZ)) for the long-range intrahemispheric electrode pairs (F3P3, F4P4, F3T7, F4T8, F3O1, and F4O2). The results indicated that deceptive responses elicited greater connectivities in the frontoparietal and frontotemporal networks than in the frontooccipital network. Furthermore, the deception group displayed lower values of coherence in the frontoparietal electrode pairs in the alpha and beta bands than the honesty group. In particular, increased coherence in the delta and theta bands on specific left frontoparietal electrode pairs was observed. Additionally, the deception group exhibited higher values of coherence in the delta band and lower values of coherence in the beta band on the frontotemporal electrode pairs than did the honesty group. These data indicated that the active cognitive processes during deception include changes in ensemble activities between the frontal and parietal/temporal regions.

Highlights

Studies on the neural basis of deception have important theoretical and clinical implications [1, 2]
Compared with high spatial resolution evidence obtained from functional magnetic resonance imaging, we focused on the ongoing components of brain signals using a technique with high temporal resolution because its frequency components have been functionally related to information processing and behavior
Our study demonstrated the functional connectivity among brain regions underlying neural oscillation synchronization during deception

Summary

Introduction

Studies on the neural basis of deception have important theoretical and clinical implications [1, 2]. Most studies support the hypothesis that greater cognitive control and conflict suppression (i.e., the inhibition of honest reaction) are required during deception [5, 6]. In contrast to truthful responses, deception involves the activation of several brain regions, including the temporal and occipital lobes and frontal and parietal scalp regions [2, 7,8,9,10,11]. The prefrontal cortex, including areas of the anterior cingulate cortex, middle frontal gyrus, and inferior frontal gyrus, is usually related to decision-making, action inhibition, and conflict monitoring, which are assumed to regulate deception [3, 12, 13]. At the neural circuit level, the connectivities related to the frontal and parietal networks play crucial roles in the processing of deception [14]. Compared with high spatial resolution evidence obtained from functional magnetic resonance imaging (fMRI), we focused on the ongoing (i.e., neural oscillatory) components of brain signals using a technique with high temporal resolution because its frequency components have been functionally related to information processing and behavior

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