Application of noninvasive neuromodulation and light therapy in post-stroke depression: a narrow review

Abstract

Post-stroke depression is closely related to the poor prognosis of stroke, resulting in prolonged hospital stay, neurological dysfunction, and increased mortality. Post-stroke depression has a complex pathogenesis, and cannot be explained by a single pathophysiological mechanism; therefore, no treatment is definitely effective. Currently, the commonly used treatment methods include drug therapy, psychotherapy and noninvasive neuromodulation therapy, such as repetitive transcranial magnetic stimulation, and transcranial direct current stimulation. However, simple drugs have poor efficacy and are often accompanied by side effects. Although repetitive transcranial magnetic stimulation and transcranial direct current stimulation combined with drug therapy enhance drug efficacy, their application is limited in some cases. Light therapy can regulate the central nervous system through the light-sensitive retinal nerve pathway, which has been proven to have therapeutic effects in patients with depression. Light therapy has the advantages of no obvious side effects and a wider range of adaptation. This review summarizes the current research status of noninvasive neuromodulation and light therapy in post-stroke depression and explores the possibility of widespread application of physical factors modulation for post-stroke depression.