title: Lying about the valence of affective pictures: an fMRI study.
abstract: The neural correlates of lying about affective information were studied using a functional magnetic resonance imaging (fMRI) methodology. Specifically, 13 healthy right-handed Chinese men were instructed to lie about the valence, positive or negative, of pictures selected from the International Affective Picture System (IAPS) while their brain activity was scanned by a 3T Philip Achieva scanner. The key finding is that the neural activity associated with deception is valence-related. Comparing to telling the truth, deception about the valence of the affectively positive pictures was associated with activity in the inferior frontal, cingulate, inferior parietal, precuneus, and middle temporal regions. Lying about the valence of the affectively negative pictures, on the other hand, was associated with activity in the orbital and medial frontal regions. While a clear valence-related effect on deception was observed, common neural regions were also recruited for the process of deception about the valence of the affective pictures. These regions included the lateral prefrontal and inferior parietal regions. Activity in these regions has been widely reported in fMRI studies on deception using affectively-neutral stimuli. The findings of this study reveal the effect of valence on the neural activity associated with deception. Furthermore, the data also help to illustrate the complexity of the neural mechanisms underlying deception.
authors.affiliation: Laboratory of Neuropsychology, The University of Hong Kong, Hong Kong, China. tmclee@hkusua.hku.hk
authors.forename: Tatia M C
authors.initials: TM
authors.lastname: Lee
authors.forename: Tiffany M Y
authors.initials: TM
authors.lastname: Lee
authors.forename: Adrian
authors.initials: A
authors.lastname: Raine
authors.forename: Chetwyn C H
authors.initials: CC
authors.lastname: Chan
mesh_terms: D000328:Adult; D000339:Affect / Q000502:physiology*; D000704:Analysis of Variance; D001921:Brain / Q000502:physiology; D003116:Color; D008192:Deception; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D010775:Photic Stimulation; D010781:Photography; D014342:Truth Disclosure
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