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Neuromodulation of the Right Motor Cortex of the Lips With Repetitive Transcranial Magnetic Stimulation to Reduce Phonological Impairment and Improve Naming in Three Persons With Aphasia: A Single-Case Experimental Design.
- Source :
- American Journal of Speech-Language Pathology; Jul2024, Vol. 33 Issue 4, p2023-2040, 18p
- Publication Year :
- 2024
-
Abstract
- Purpose: Repetitive transcranial magnetic stimulation (rTMS) can enhance aphasia recovery. Most studies have used inhibitory stimulation targeting the right inferior frontal gyrus. However, the motor cortex, observed to contribute to the prediction of aphasia recovery, is involved in word production and could be an appropriate target for rTMS. We aimed to observe behavioral changes in a picture naming task induced by inhibitory rTMS targeting the right motor cortex of the lips in people with poststroke aphasia. Method: Using a single-case experimental design, we included three participants with chronic poststroke aphasia who had phonological deficits. Each participant performed a verbal picture naming task 3 times a week for 2, 3, or 4 weeks (pseudorandom across participants) to establish a baseline naming ability for each participant. These were not therapy sessions, and no feedback was provided. Then, each participant received the intervention, inhibitory continuous theta burst stimulation targeting the right motor cortex of the lips, 3 times a week for 2 weeks. Naming testing continued 3 times a week, for these latter 2 weeks. No therapy was performed at any time during the study. Results: Visual analysis of the graphs showed a positive effect of rTMS for P2 and P3 on picture naming accuracy and a tendency toward improvement for P1. Statistical analysis showed an improvement after rTMS for P1 (τ = 0.544, p = .013, SE<superscript>Tau</superscript> = 0.288) and P2 (τ = 0.708, p = .001, SET<subscript>au</subscript> = 0.235). For P3, even if the intervention allowed some improvement, this was statistically nonsignificant due to a learning effect during the baseline naming testing, which lasted the longest, 4 weeks. Regarding specific language features, phonological errors significantly decreased in all patients. Conclusions: The motor cortex of the lips could be an appropriate target for rTMS to improve naming in people with poststroke aphasia suffering from a phonological deficit. This suggests the possibility to individualize the target for rTMS, according to the patient's linguistic impairment. [ABSTRACT FROM AUTHOR]
- Subjects :
- ARTICULATION disorders
LANGUAGE & languages
TASK performance
PHONOLOGICAL awareness
QUESTIONNAIRES
APHASIA
TREATMENT effectiveness
MAGNETIC resonance imaging
DESCRIPTIVE statistics
EXPERIMENTAL design
LINGUISTICS
FRONTAL lobe
STROKE rehabilitation
STROKE
PHONETICS
COMPARATIVE studies
DATA analysis software
LIPS
TRANSCRANIAL magnetic stimulation
SPEECH therapy
BEHAVIOR therapy
ELECTROPHYSIOLOGY
DISEASE complications
Subjects
Details
- Language :
- English
- ISSN :
- 10580360
- Volume :
- 33
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- American Journal of Speech-Language Pathology
- Publication Type :
- Academic Journal
- Accession number :
- 178368919
- Full Text :
- https://doi.org/10.1044/2024_AJSLP-23-00215