Unravelling the influence of mild traumatic brain injury (MTBI) on cognitive-linguistic processing: A comparative group analysis

• Published in: Brain injury 2013-06, Vol.27 (6), p.671-676
• Main Authors: Barwood, Caroline H.S., Murdoch, Bruce E.
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Aged; Analysis of Variance; Australia - epidemiology; Brain Injuries - complications; Brain Injuries - epidemiology; Brain Injuries - physiopathology; Cognition; Cognition Disorders - epidemiology; Cognition Disorders - etiology; Cognition Disorders - physiopathology; Educational Status; Female; high-level language; Humans; Language; Language Tests; Male; Mental Recall; Middle Aged; mild traumatic brain injury; Psycholinguistics; Severity of Illness Index; Speech Disorders - epidemiology; Speech Disorders - etiology; Speech Disorders - physiopathology; Task Performance and Analysis; TBI
• ISSN: 0269-9052; 1362-301X
• DOI: 10.3109/02699052.2013.775500

Abstract Background: Cognitive-linguistic deficits often accompany traumatic brain injury (TBI) and can negatively impact communicative competency. The linguistic sequelae underpinning mild TBI (MTBI) remain largely unexplored in contemporary literature. Objectives: The present research methods aim to provide group evidence pertaining to the influence of MTBI on linguistic and higher-level language processing. Extrapolating on the findings of recent case reports, it is hypothesized that performance of the MTBI patients will be significantly reduced compared to normal controls performance on the employed high-level linguistic tasks. Methods: Sixteen patients with MTBI and 16 age- and education-matched normal control participants were assessed using a comprehensive battery of cognitive-linguistic assessments. Results: The results demonstrated statistically significant differences between MTBI and normal control group performance across a number of higher-level linguistic, general cognitive and general language tasks. MTBI group performance was significantly lower than the normal control group on tasks requiring complex lexical semantic operations and memory demands, including: Recall, organization, making inferences, naming and perception/discrimination. Conclusions: These outcomes confer that post-MTBI, cognitive, high-level language and isolated general language performance (e.g. naming) is significantly reduced in MTBI patients, compared to normal controls. Furthermore, the detailed cognitive-linguistic profile offered provides a necessary direction for the identification of areas of linguistic decline in MTBI and targets for therapeutic intervention of impaired cognitive-linguistic processes to ultimately improve communicative outcomes in MTBI.