Vestibular Stimulation in Post-Stroke Visual Disorders

Stroke is one of the leading causes of death and disability worldwide and survivors often suffer from disorders of the visual system, which include both visual neglect and hemianopia. The first section of this work focuses on the former. Several studies have investigated different forms of vestibular stimulation as a potential therapy for neglect. However, this evidence is yet to be systematically reviewed, a gap in the literature which this thesis aims to fill. Nine studies addressing this topic are evaluated, with results revealing mixed evidence of low quality as to the efficacy of the stimulation. Better quality evidence, which more thoughtfully considers the many complexities of neglect and its assessment needs to be conducted. By addressing the inconsistencies found, future research should be able to achieve results in which we can have greater confidence, subsequently advancing the search for a more effective treatment for the condition. A second purpose of the thesis is to present theoretical justification and research methods for a novel intervention for individuals suffering from hemianopia. The treatment is based on the principles of multisensory integration and involves combining visual training with galvanic vestibular stimulation. Unfortunately, no data are available for this experiment due to the COVID-19 outbreak, but anticipated outcomes are provided.