《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2019, Vol. 25 ›› Issue (5): 506-512.doi: 10.3969/j.issn.1006-9771.2019.05.002

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Effects of Transcranial Direct Current Stimulation on Naming of Visual and Auditory Modality in Post-stroke Aphasia

TAO Yuan-yuan1, SUN Rong2, LE Jie2, MI Hai-xia2, DU Xiao-xia1,2,3, SONG Lu-ping1,2,3   

  1. 1.Capital Medical University School of Rehabilitation Medicine, Beijing 100068, China
    2.Neurological Rehabilitation Department, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing 100068, China
    3.Beijing Key Laboratory of Neurological Injury and Rehabilitation, Beijing 100068, China
  • Received:2019-03-05 Revised:2019-04-17 Published:2019-05-25 Online:2019-05-29
  • Contact: SONG Lu-ping, E-mail: songluping882002@aliyun.com
  • Supported by:
    Special Fund Project for Basic Scientific Research Business of Central Public Scientific Research Institute (No. 2016CZ-6), National Key Research and Development Program (No. 2016YFF0201002) and China Rehabilitation Research Center Project (No. 2017ZX-12)

Abstract: Objective To observe the effects of transcranial direct current stimulation (tDCS) on the naming of visual and auditory modality in patients with post-stroke aphasia.Methods From March to November, 2018, 32 patients with post-stroke aphasia were randomly divided into control group (n = 16) and treatment group (n = 16). The treatment group accepted anodal-tDCS (A-tDCS) over left-inferior frontal gyrus (L-IFG) concurrent with speech training, while the control group accepted sham-tDCS. Before and two weeks after treatment, they were assessed with Western Aphasia Battery (WAB), Picture Naming Test and Environmental Sound Naming Test. Results One patient was lost in the control group. After treatment, Aphasia Quotient of WAB improved in both groups (t > 5.081, P < 0.001), but the difference before and after treatment was not significantly different between two groups (t = 1.550, P > 0.05); the Picture Naming Test score improved in both groups (Z > 2.650, P < 0.01), and the difference before and after treatment was more in the treatment group than in the control group (Z = -2.258, P < 0.05); the object naming score of WAB improved in the treatment group (Z = -3.239, P < 0.01), and the difference before and after treatment was more in the treatment group than in the control group (Z = -3.008, P < 0.01); the score of Environment Sound Naming Test improved in the treatment group (t = -4.745, P < 0.001), and the difference before and after treatment was more in the treatment group than in the control group (t = 2.224, P < 0.05). The scores of spontaneous naming, sentences complement and reaction naming of WAB improved in the treatment group (Z > 2.191, P < 0.05), while the score of spontaneous naming of WAB improved in the control group (Z = -2.376, P < 0.05), but the differences before and after treatment were not significantly different between two groups (Z < 1.568, P > 0.05). Conclusion A-tDCS over L-IFG may improve the naming ability of visual and auditory modality, which may associate with semantic or phonetic processing.

Key words: stroke, aphasia, transcranial direct current stimulation, naming, visual modality, auditory modality

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