Patients received 45 minutes of speech and language sessions 5 times per week for 3 weeks and received either 100 mg of levodopa or placebo 30 minutes prior to the start of therapy.

• 患者接受每周5次，每次45分钟的语言训练治疗，持续3周，治疗前30分钟口服100毫克左旋多巴或安慰剂。