Cognitive control of conscious error awareness: variable error awareness and error positivity (Pe) amplitude in moderate-to-severe traumatic brain injury (TBI)

Frontiers in Human Neuroscience

Kyle eHill¹  Dustin eLogan¹  Michael J Larson¹ 

[1] Brigham Young University;

关键词: cognitive control;    Traumatic Brain Injury;    error awareness;    Pe;    ERP;    TBI;   

DOI  :  10.3389/fnhum.2015.00397

来源: DOAJ

【 摘 要 】

Poor awareness has been linked to worse recovery and rehabilitation outcomes following moderate-to-severe traumatic brain injury (M/S TBI). The error positivity (Pe) component of the event-related potential (ERP) is linked to error awareness and cognitive control. Participants included 37 neurologically-healthy controls and 24 individuals with M/S TBI who completed a brief neuropsychological battery and the error awareness task (EAT), a modified Stroop go/no-go task that elicits aware and unaware errors. Analyses compared between-group no-go accuracy (including accuracy between the first and second halves of the task to measure attention and fatigue), error awareness performance, and Pe amplitude by level of awareness. The M/S TBI group decreased in accuracy and maintained error awareness over time; control participants improved both accuracy and error awareness during the course of the task. Pe amplitude was larger for aware than unaware errors for both groups; however, consistent with previous research on the Pe and TBI, there were no significant between-group differences for Pe amplitudes. Findings suggest possible attention and low improvement of performance over time may influence specific aspects of error awareness in M/S TBI.

【 授权许可】

Unknown