Searching across hundreds of databases
The capacity to deceive others is a complex mental skill that requires the ability to suppress truthful information. The polygraph is widely used in countries such as the USA to detect deception. However, little is known about the effects of emotional processes (such as the fear of being found guilty despite being innocent) on the physiological responses that are used to detect lies. The aim of this study was to investigate the time course and neural correlates of untruthful behavior by analyzing electrocortical indexes in response to visually presented neutral and affective questions. Affective questions included sexual, shameful or disgusting topics. A total of 296 questions that were inherently true or false were presented to 25 subjects while ERPs were recorded from 128 scalp sites. Subjects were asked to lie on half of the questions and to answer truthfully on the remaining half. Behavioral and ERP responses indicated an increased need for executive control functions, namely working memory, inhibition and task switching processes, during deceptive responses. Deceptive responses also elicited a more negative N400 over the prefrontal areas and a smaller late positivity (LP 550-750 ms) over the prefrontal and frontal areas. However, a reduction in LP amplitude was also elicited by truthful affective responses. The failure to observe a difference in LP responses across conditions likely results from emotional interference. A swLORETA inverse solution was computed on the N400 amplitude (300-400 ms) for the dishonest - honest contrast. These results showed the activation of the superior, medial, middle and inferior frontal gyri (BA9, 11, 47) and the anterior cingulate cortex during deceptive responses. Our results conclude that the N400 amplitude is a reliable neural marker of deception.
Pubmed ID: 23536874 RIS Download
Publication data is provided by the National Library of Medicine ® and PubMed ®. Data is retrieved from PubMed ® on a weekly schedule. For terms and conditions see the National Library of Medicine Terms and Conditions.
Based in Washington, D.C., the American Psychological Association (APA) is a scientific and professional organization that represents psychology in the United States. With more than 154,000 members, APA is the largest association of psychologists worldwide. The mission of the APA is to advance the creation, communication and application of psychological knowledge to benefit society and improve people''s lives. The American Psychological Association aspires to excel as a valuable, effective and influential organization advancing psychology as a science, serving as: * A uniting force for the discipline * The major catalyst for the stimulation, growth and dissemination of psychological science and practice * The primary resource for all psychologists * The premier innovator in the education, development, and training of psychological scientists, practitioners and educators * The leading advocate for psychological knowledge and practice informing policy makers and the public to improve public policy and daily living * A principal leader and global partner promoting psychological knowledge and methods to facilitate the resolution of personal, societal and global challenges in diverse, multicultural and international contexts * An effective champion of the application of psychology to promote human rights, health, well being and dignity APA and its affiliate organizations provide a diverse range of scholarships, grants, and awards with the aim of advancing research in psychology. Using our specialized search tool, you can find funding by type, sponsor, topic area, recipient type, and deadline date.
View all literature mentionsThe SciCrunch Infrastructure was developed as a cooperative data platform to be used by diverse communities in making data more FAIR.
scicrunch.org
