Caloric vestibular stimulation in aphasic syndrome

Area of Science:

• Neuroscience
• Neurology
• Speech and Language Pathology

Background:

• Caloric vestibular stimulation (CVS) is a diagnostic tool for brainstem disorders.
• Its therapeutic potential, particularly for neurological communication deficits, is less understood.
• Previous research suggests CVS can increase blood flow to language-associated brain regions.

Purpose of the Study:

• To investigate the potential of CVS as a therapeutic intervention for post-stroke aphasia.
• To assess the effects of CVS on expressive and receptive language symptoms.

Main Methods:

• Three participants with chronic, left-hemisphere stroke-related aphasia received daily CVS for four weeks.
• Language function was assessed using picture naming, responsive naming, sentence repetition, and auditory word discrimination tasks.
• Performance was compared to pre-treatment baseline scores and evaluated at immediate and 1-week follow-up.

Main Results:

• Two out of three participants demonstrated significant improvements in picture and responsive naming.
• One participant showed enhanced sentence repetition abilities.
• Another participant exhibited improved auditory word discrimination.
• No adverse effects were reported during the study.

Conclusions:

• Caloric vestibular stimulation shows tentative promise for alleviating both expressive and receptive aphasia symptoms.
• These findings suggest CVS may be a viable therapeutic option for stroke survivors with aphasia.
• Further investigation through larger, sham-controlled trials is warranted to confirm efficacy.