language therapy
Research Papers
Language Rehabilitation of Traumatic Brain Injury Patient by LORETA Z-Score Neurofeedback: A Single-Case Study
Traumatic brain injury (TBI) creates a variety of sequelae such as aphasia that can be highly challenging for clinicians when developing rehabilitation interventions. Therefore, the present study aimed to investigate the effectiveness of LORETA z-score neurofeedback (LZNFB) on language performance for a 21-year-old male suffering from aphasia following TBI. To this end, LZNFB was applied while focusing on the language network for 15 sessions. The study used an experimental design with a pre-post comparison. Baseline and posttreatment comparisons were made on qEEG/LORETA metrics, aphasia symptoms, working memory, and attention. The results indicated clinical improvements in language, working memory, and attention performances after 15 sessions of LZNFB. Our findings suggest that LZNFB may have the potential to aid language performance among those with TBI
View Full Paper →High-Definition tDCS of Noun and Verb Retrieval in Naming and Lexical Decision
High-definition transcranial direct current stimulation (HD-tDCS) is a novel brain stimulation method that has high potential for use in language therapy for speakers with aphasia, due to its safety and focality. This study aimed to obtain foundational data on using HD-tDCS to modulate language processing in healthy speakers. Participants received stimulation either of Broca's area or of the left angular gyrus (20 min of anodal, cathodal, and sham stimulation on separate days), followed by naming and lexical decision tasks with single-word verb and noun stimuli. We found that cathodal stimulation over both Broca's area and the left angular gyrus increased naming speed for both verbs and nouns, challenging the traditional view of cathodal stimulation as suppressive or leading to decreased performance. The effect did not extend to the lexical decision task. Additionally, effects of specific stimulation types depended on the order of their administration, suggesting possible physiological carry-over and/or task novelty effects. These results are relevant to the application of HD-tDCS to enhance and direct neural plasticity in patients with neurogenic language disorders.
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