CLINICAL NEUROSCIENCE AND NEUROPATHOLOGYAwareness of deficits and error processing after traumatic brain injuryLarson, Michael J.a b; Perlstein, William M.c d e Author Information Departments of aPsychology bNeuroscience, Brigham Young University, Provo, Utah Departments of cClinical and Health Psychology dPsychiatry eMcKnight Brain Institute, University of Florida, Gainesville, Florida, USA Correspondence to Dr Michael J. Larson, PhD, Department of Psychology, Brigham Young University, Provo, UT 84602, USA Tel: +1 801 422 6125; fax: +1 801 422 0163; e-mail: [email protected] Received 30 June 2009 accepted 31 August 2009 NeuroReport: October 28, 2009 - Volume 20 - Issue 16 - p 1486-1490 doi: 10.1097/WNR.0b013e32833283fe Buy Metrics Abstract Severe traumatic brain injury is frequently associated with alterations in performance monitoring, including reduced awareness of physical and cognitive deficits. We examined the relationship between awareness of deficits and electrophysiological indices of performance monitoring, including the error-related negativity and posterror positivity (Pe) components of the scalp-recorded event-related potential, in 16 traumatic brain injury survivors who completed a Stroop color-naming task while event-related potential measurements were recorded. Awareness of deficits was measured as the discrepancy between patient and significant-other ratings on the Frontal Systems Behavior Scale. The amplitude of the Pe, but not error-related negativity, was reliably associated with decreased awareness of deficits. Results indicate that Pe amplitude may serve as an electrophysiological indicator of awareness of abilities and deficits. © 2009 Lippincott Williams & Wilkins, Inc.