The goal of this clinical trial is to learn whether a tongue endurance exercise program can improve swallowing function in adults with dysphagia after a stroke. It also aims to explore how this exercise may affect brain structure and connectivity involved in swallowing. The main questions it aims to answer are: Primary Aim: Does lingual endurance exercise improve swallowing function compared to a sham therapy? Secondary Aim: Does lingual endurance exercise lead to changes in brain structure or neuroplasticity, as measured by MRI? Researchers will compare a group receiving tongue endurance exercises to a sham therapy group to see whether the treatment improves tongue function, swallowing. Participants will: * Complete a baseline swallowing assessment and MRI * Be randomly assigned to either the lingual exercise or sham therapy group * Complete 8 weeks of home-based tongue exercise therapy * Return for follow-up swallowing assessments * A subgroup of participants will complete a pre-treatment and post-treatment MRI.
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Modified Barium Swallow Study Impairment Profile Oral Total (MBSImP OT Score)
Timeframe: Change from Baseline (at the end of 8 weeks)