| Objective: To study the effect of transcranial direct current stimulation (tDCS) at the Broca and motor areas of the left side of the brain on verb naming in aphasia patients with left frontal lobe injury. Methods: A total of 36 aphasia patients who met the inclusion criteria and underwent rehabilitation in the Department of Rehabilitation Medicine and Outpatient Department of Xuanwu Hospital, Capital Medical University from June 2019 to June 2022 were retrospectively enrolled. The patients were divided into control group, Broca group and M1 group. All patients in the three groups received the same speech and language therapy, and the training content included the treatment item pictures in the evaluation. At the same time, the left hemisphere Broca area was stimulated in Broca group, and the left hemisphere M1 area was stimulated in M1 group. The stimulation intensity was 1.4 mA, the stimulation duration was 20 min, and the treatment lasted for 5 days. Verb naming and verbal listening comprehension were evaluated before and 5 days after treatment. Verb naming included treatment and non-treatment verb naming. Results: After treatment, verb naming scores of training items in 3 groups were significantly improved as compared with those before treatment (P<0.05), and those in Broca group was significantly improved as compared with M1 group and control group (P<0.05). After treatment, the naming performance of non-training item verbs in the Broca group was significantly improved as compared with that before treatment (P<0.05), and that in the Broca group was significantly improved as compared with M1 group and control group (P<0.05). After treatment, the performance of verb listening comprehension in the Broca group was significantly improved as compared with that before treatment (P<0.05), and that in the Broca group was significantly improved as compared with the M1 group and the control group (P<0.05). Conclusion: The tDCS of the Broca region can more effectively improve verb comprehension and naming in patients with aphasia caused by left frontal lobe injury than M1 region, and has a better generalization effect on verb naming. |
