Motor Learning–Based Orofacial Rehabilitation for Ataxic Dysarthria Following Cerebellar Stroke: A Case Report

Objective The purpose of this study is to describe the clinical presentation of a patient with ataxic (drunken) dysarthria after a recurrent cerebellar stroke and assess the short-term efficacy of a structured Motor Learning–Based Oro-facial Rehabilitation (MLBOR) protocol in improving orofacial coordination and speech intelligibility. Methods A 68-year-old man who had previously experienced a cerebellar infarction showed signs of right-sided facial incoordination, irregular diadochokinesis, diminished breath-speech coordination, and slurred, scanning speech. The design of a phased MLBR protocol included three phases: functional communication training with quality-of-life assessment in Phase 3, imitation-based speech drills in Phase 2, and orofacial muscle strengthening in Phase 1. Only Phase 1 was implemented for three weeks due to time constraints. The motor learning principles of repetition, task specificity, graded progression, and feedback were used to deliver the intervention, which included blowing exercises, balloon blowing, cheek puffing, straw-assisted tasks, tongue presses, smile holding, and upward facial facilitation techniques. Throughout the intervention period, daily speech audio recordings were made to track continued improvements in coordination and clarity. Perceptual speech analysis, patient self-report, bystander feedback, and assessment of the daily evaluation. Results The patient showed better lip seal, better tongue and buccal coordination, and less speech slurring after the intervention. Perceptual improvements in speech intelligibility were accompanied by functional improvements in breath-speech control. Over the course of the three weeks, daily audio recordings showed increasing improvements, corroborating both observer-reported and subjective results. Feedback from patients and bystanders revealed a significant improvement in the confidence and clarity of communication. Discussion This case reveals that early functional improvements in cerebellar ataxic dysarthria can be achieved through an organized motor learning-based orofacial strengthening program. Repetitive, task-specific training that focuses on coordination rather than just strength seems to be helpful. These results encourage more study on thorough MLBR protocols in post-stroke dysarthria rehabilitation, despite being restricted to Phase 1 and short-term follow-up.