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Cerebral Cortex Advance Access first published online on April 27, 2005
This version published online on May 2, 2005
Cerebral Cortex, doi:10.1093/cercor/bhi097
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© The Author 2005. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oupjournals.org

Article

Dissociable Roles of Prefrontal and Anterior Cingulate Cortices in Deception

Nobuhito Abe 1*, Maki Suzuki 2, Takashi Tsukiura 3, Etsuro Mori 1, Keiichiro Yamaguchi 4, Masatoshi Itoh 4, and Toshikatsu Fujii 1

1 Department of Behavioral Neurology and Cognitive Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
2 Department of Behavioral Neurology and Cognitive Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan; Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan
3 Cognitive and Behavioral Sciences Group, Neuroscience Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
4 Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan

* To whom correspondence should be addressed.
Nobuhito Abe, E-mail: abe-n{at}mail.tains.tohoku.ac.jp


  Abstract

Recent neuroimaging studies have shown the importance of the prefrontal and anterior cingulate cortices in deception. However, little is known about the role of each of these regions during deception. Using positron emission tomography (PET), we measured brain activation while participants told truths or lies about two types of real-world events: experienced and unexperienced. The imaging data revealed that activity of the dorsolateral, ventrolateral and medial prefrontal cortices was commonly associated with both types of deception (pretending to know and pretending not to know), whereas activity of the anterior cingulate cortex (ACC) was only associated with pretending not to know. Regional cerebral blood flow (rCBF) increase in the ACC was positively correlated with that in the dorsolateral prefrontal cortex only during pretending not to know. These results suggest that the lateral and medial prefrontal cortices have general roles in deception, whereas the ACC contributes specifically to pretending not to know.

Keywords: executive function; frontal lobe; lie detection; PET; social interactions.
The value for the right inferior frontal gyrus in line 3 of Figure 4's caption has been corrected to "52".
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