Effects of transcranial direct current stimulation on the picture naming and phonemic fluency of aphasics
10.3760/cma.j.issn.0254-1424.2022.11.003
- VernacularTitle:经颅直流电刺激背外侧前额叶对脑卒中后失语症患者命名和音位流畅性的影响
- Author:
Xi YANG
1
;
Jin LIU
;
Liang XU
;
Wenli CHEN
;
Qian CAI
;
Yue SUN
;
Hongxing WANG
Author Information
1. 东南大学附属中大医院康复医学科，南京 210009
- Keywords:
Aphasia;
Transcranial electrical stimulation;
Dorsolateral prefrontal cortex;
Phonemic fluency
- From:
Chinese Journal of Physical Medicine and Rehabilitation
2022;44(11):973-977
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To observe any effect of transcranial direct current stimulation (tDCS) on the speed and accuracy of picture naming and on the phonological fluency of aphasic stroke survivors.Methods:Twenty-four stroke survivors with aphasia were randomly divided into an observation group and a control group, each of 12. In addition to language training and picture naming training, the observation group received 20 minutes of tDCS over the left dorsolateral prefrontal cortex (DLPFC) daily, 5 days a week for 2 weeks. The control group was given sham stimulation. Before and after the 2 weeks of treatment, both groups were tested for picture naming and phonological fluency.Results:Significant improvement in the number of accurately pronounced high-frequency words and in reaction time was observed in both groups, but the observation group′s average reaction time for high-frequency words was significantly shorter than the control group′s average. The observation group′s average reaction time for low-frequency words had also improved significantly. After the 2 weeks of treatment, the phonological fluency of the observation group was significantly better than before the treatment and better than that of the control group.Conclusions:tDCS applied over the left DLPFC of stroke survivors with aphasia can promote lexical retrieval and strengthen their executive and control functioning.
