Cognitive-Linguistic outcome in moderate to severe diffuse axonal injury and association with fatigue.

PURPOSE: Individuals with traumatic brain injury (TBI) often have persistent cognitive-linguistic deficits that negatively influence their life. Our objective was to examine the cognitive-linguistic outcome in individuals with moderate to severe diffuse axonal injury (DAI) with a novel test battery. As fatigue is a common symptom affecting the lives of individuals with DAI, we also wanted to assess whether the self-reported fatigue was associated with cognitive-linguistic abilities. METHODS: Selected cognitive-linguistic subtests of the Finnish KAT test and The Mental Fatigue Scale (MFS) were applied to 48 adults with moderate to severe DAI and 27 healthy controls. The majority of the participants with DAI were in the chronic stage. The groups were compared using ANCOVA. Linear regressions were used to analyze the association between MFS and cognitive-linguistic outcomes. RESULTS: The participants with DAI had significantly poorer scores than the controls in most cognitive-linguistic variables and reported significantly more fatigue. Two of the four cognitive-linguistic composite variables were associated with the degree of self-reported fatigue. CONCLUSIONS: Cognitive-linguistic deficits are common in individuals with moderate to severe DAI, and The Finnish KAT test is a valuable tool to detect those. Fatigue was associated with linguistic working memory and language production.

Association of cognitive-linguistic deficits to diffusion tensor imaging parameters in moderate to severe traumatic diffuse axonal injury.

Cognitive-linguistic functions are an essential part of adequate communication competence. Cognitive-linguistic deficits are common after traumatic diffuse axonal injury (DAI). We aimed to examine the integrity of perisylvian white matter tracts known to be associated with linguistic functions in individuals with DAI and their eventual association with poor cognitive-linguistic outcomes. Diffusion tensor imaging (DTI) results of 44 adults with moderate-to-severe DAI were compared with those of 67 controls. Fractional anisotropy (FA) values of the superior longitudinal fasciculus (SLF), arcuate fasciculus (AF), SLF with frontal connections to the lower parietal cortex, and AF with temporal connections to the lower parietal cortex were measured using tractography. The associations between white matter integrity FA values and cognitive-linguistic deficits were studied in the DAI group. Cognitive-linguistic deficits were determined based on our earlier study using the novel KAT test. No previous studies have examined the associations between white matter integrity and cognitive-linguistic deficits determined using the KAT test. Patients with DAI showed lower FA values in all left-side tracts than the controls. Unexpectedly, the poor cognitive-linguistic outcome in the language comprehension and production domains was associated with high FA values of several tracts. After excluding five cases with the poorest cognitive-linguistic performance, but with the highest values in the DTI variables, no significant associations with DTI metrics were found. The association between white matter integrity and cognitive-linguistic functioning is complex in patients with DAI of traumatic origin, probably reflecting the heterogeneity of TBI.

Recovering social participation - experience with a relational group intervention for traumatic brain injury patients.

BACKGROUND: Traumatic brain injuries often result in impaired social functioning that may cause uncertainty, isolation, and precipitation of significant stress in social situations. Involvement in directed group treatment helps participants to develop new capabilities for feeling relationally connected, improving verbal and nonverbal communication skills, as well as building the capacity for empathic intersubjectivity. We suggest that group intervention to improve communication and social skills may provide an efficient and effective way for a patient to return to successful social participation. OBJECTIVE: The purpose of this paper is to describe and discuss the principles of a clinical group intervention for increasing the social participation of persons with traumatic brain injury. METHODS: Since 2000, several intervention periods, each with 10-20 group meetings, including some individual sessions for guidance, have been carried out under our direction in Finland. The intervention periods include education, reflection, and practical experiential exercises and can be multidisciplinary with both speech-language pathologists and neuropsychologists providing oversight and direction. The main goal of the described group interventions is to support community participation and social reintegration. In this article, we describe guiding principles and provide examples of the clinical group interventions drawn from our experience. CONCLUSION: As determined by clinical observations and patient reports, the group intervention for social participation has proven to be beneficial. The participants report gaining more understanding of and insight into social situations, nonverbal and verbal communication, as well as affective interactive experience. Practicing social skills in a group situation is inherently self-motivating and encourages a constructive, positive impetus toward greater social participation. Based on our experience with this approach, it appears that this experiential form of group intervention is an effective bridge between structured cognitive-communication rehabilitation and successful real-life social participation.