Volume 51, Issue 7 pp. 645-657
Original Article

Dissociable effects of psychopathic traits on cortical and subcortical visual pathways during facial emotion processing: An ERP study on the N170

Pedro R. Almeida

Corresponding Author

Pedro R. Almeida

Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences, University of Porto, Porto, Portugal

School of Criminology, Faculty of Law, University of Porto, Porto, Portugal

Address correspondence to: Pedro R. Almeida, Laboratório de Neuropsicofisiologia, Faculdade de Psicologia e de Ciências da Educação, Universidade do Porto – Rua Alfredo Allen, 4200-135 Porto, Portugal. E-mail: [email protected]Search for more papers by this author
Fernando Ferreira-Santos

Fernando Ferreira-Santos

Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences, University of Porto, Porto, Portugal

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Joana B. Vieira

Joana B. Vieira

Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences, University of Porto, Porto, Portugal

Faculty of Medicine, University of Porto, Porto, Portugal

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Pedro S. Moreira

Pedro S. Moreira

Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences, University of Porto, Porto, Portugal

School of Criminology, Faculty of Law, University of Porto, Porto, Portugal

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Fernando Barbosa

Fernando Barbosa

Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences, University of Porto, Porto, Portugal

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João Marques-Teixeira

João Marques-Teixeira

Laboratory of Neuropsychophysiology, Faculty of Psychology and Educational Sciences, University of Porto, Porto, Portugal

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First published: 02 April 2014
Citations: 34
Pedro R. Almeida (SFRH/BD/38711/2007), Fernando Ferreira-Santos (SFRH/BD/64071/2009), and Joana B. Vieira (SFRH/BD/76254/2011) were supported by the Portuguese Foundation for Science and Technology. The authors would like to thank Eva C. Martins for her suggestions regarding data anaysis and Sofia Leite for her assistance in data collection. The authors would further like to thank the anonymous reviewers for their valuable comments that helped improve the quality of the paper.

Abstract

This study examined the relation between psychopathic traits and the brain response to facial emotion by analyzing the N170 component of the ERP. Fifty-four healthy participants were assessed for psychopathic traits and exposed to images of emotional and neutral faces with varying spatial frequency content. The N170 was modulated by the emotional expressions, irrespective of psychopathic traits. Fearless dominance was associated with a reduced N170, driven by the low spatial frequency components of the stimuli, and dependent on the tectopulvinar visual pathway. Conversely, coldheartedness was related to overall enhanced N170, suggesting mediation by geniculostriate processing. Results suggest that different dimensions of psychopathy are related to distinct facial emotion processing mechanisms and support the existence of both amygdala deficits and compensatory engagement of cortical structures for emotional processing in psychopathy.

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