Poster B117, Sunday, March 25, 8:00-10:00 am, Exhibit Hall C
Efficacy of EEG Neurofeedback in Individuals with Traumatic Brain Injury: Does Age Matter?
Marielle L. Darwin1, Savannah Regensburger1; 1Colorado State University
Traumatic brain injury (TBI) often results in neurological deficits that impair cognitive-behavioral and social functioning. EEG neurofeedback (NFB) training utilizes real-time neurophysiological activity to improve regulation of EEG oscillations. High frequency of the alpha rhythm (8-12 hertz) relates to efficient cognitive performance; however, frequency decreases with age. The current study aimed to determine the efficacy of NFB training of the alpha rhythm in individuals with TBI. It was expected that alpha rhythm would improve over the course of treatment. Exploratory analyses determined if age influenced the efficacy of alpha rhythm training. Archival patient records (N=29) collected from a TBI unit of an inpatient rehabilitation center were analyzed. Inclusion criteria include history of moderate-severe TBI and 20 bi-weekly sessions of NFB. The NFB sessions were conducted using BioGraph Infiniti v6.0 software (Thought Technology, Ltd.). A QEEG analysis was conducted prior to individual treatment to identify alpha rhythm frequencies that were +/- two standard deviations from the normative database. A paired t-test revealed that average alpha frequency was significantly higher for the last five NFB sessions compared to the first five sessions, indicating a positive effect of treatment (t(21)=2.245, p=.036). A linear mixed effect model with age as a categorical variable (individuals below and above the age of 50, respectively; range=21-80 years old) indicated that age did not have a significant effect on the efficacy of NFB to improve the alpha rhythm. Overall, these results indicate that the success of alpha rhythm training in individuals with TBI is not limited by age.
Topic Area: EXECUTIVE PROCESSES: Development & aging