Abstract
Brain-based deception research began only two decades ago and has since included a wide variety of contexts and response modalities for deception paradigms. Investigations of this sort serve to better our neuroscientific and legal knowledge of the ways in which individuals deceive others. To this end, we conducted activation likelihood estimation (ALE) and meta-analytic connectivity modelling (MACM) using BrainMap software to examine 45 task-based fMRI brain activation studies on deception. An activation likelihood estimation comparing activations during deceptive versus honest behavior revealed 7 significant peak activation clusters (bilateral insula, left superior frontal gyrus, bilateral supramarginal gyrus, and bilateral medial frontal gyrus). Meta-analytic connectivity modelling revealed an interconnected network amongst the 7 regions comprising both unidirectional and bidirectional connections. Together with subsequent behavioral and paradigm decoding, these findings implicate the supramarginal gyrus as a key component for the sociocognitive process of deception.
Highlights
The motivation for researching the complex behavior of deception exists to identify mechanisms of sociocognitive functioning, and to further efforts to detect instances of suspect behavior
The nearest grey matter associated with each cluster are the left and right insula (L Ins, R Ins), left superior frontal gyrus (L SFG), left and right supramarginal gyrus (L SMG, R SMG), and left and right medial frontal gyrus (L MFG, R MFG)
The right MFG has one significant association with the “Attention” sub-domain of “Cognition” (z = 3.124). These results indicate that the bilateral insula, L SFG, and R MFG are mainly associated with behaviors regarding cognition
Summary
The motivation for researching the complex behavior of deception exists to identify mechanisms of sociocognitive functioning, and to further efforts to detect instances of suspect behavior. Deception is a critical aspect of criminology and forensic/legal decision-making. Deception may be defined as “the act of causing someone to accept as true or valid what is false or invalid” [1]. Deception occurs at various levels of society even becoming apparent in current politics. Deception occurs in social settings and requires a willful decision from the individual deceiving another [2]. Preschool age children are able to comprehend the concept of lying [3], indicating the quotidian nature of deception established early on in cognitive and behavioral development. The evolutionary and developmental bases of both verbal and non-verbal deception have previously been reviewed [3].
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