The invention surprisingly found that Lactobacillus plantarum subsp. plantarum PS128 provides an advantageous effect in treatment or prevention of tic disorders and basal ganglia disorders. Accordingly, the invention provides a method of treating or preventing a movement disorder in a subject, comprising administering to a subject an effective amount of cells of a Lactobacillus plantarum subsp. plantarum PS128, which is deposited under DSMZ Accession No. DSM 28632.