原发性进行性失语不同变体中的脑电刺激：一项随机临床试验。

Electrical brain stimulation in different variants of primary progressive aphasia: A randomized clinical trial.

作者信息

Tsapkini Kyrana, Webster Kimberly T, Ficek Bronte N, Desmond John E, Onyike Chiadi U, Rapp Brenda, Frangakis Constantine E, Hillis Argye E

机构信息

Department of Neurology, Johns Hopkins Medicine, Baltimore, MD, USA.

Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, USA.

出版信息

Alzheimers Dement (N Y). 2018 Sep 5;4:461-472. doi: 10.1016/j.trci.2018.08.002. eCollection 2018.

INTRODUCTION

Transcranial direct current stimulation (tDCS) has been recently shown to improve language outcomes in primary progressive aphasia (PPA) but most studies are small and the influence of PPA variant is unknown.

METHODS

Thirty-six patients with PPA participated in a randomized, sham-controlled, double-blind, within-subject crossover design for 15 daily sessions of stimulation coupled with written naming/spelling therapy. Outcome measures were letter accuracy of treated and untreated words immediately after and at 2 weeks and 2 months posttreatment.

RESULTS

tDCS treatment was more effective than sham: gains for treated words were maintained 2 months posttreatment; gains from tDCS also generalized to untreated words and were sustained 2 months posttreatment. Different effects were obtained for each PPA variant, with no tDCS advantage for semantic variant PPA.

DISCUSSION

The study supports using tDCS as an adjunct to written language interventions in individuals with logopenic or nonfluent/agrammatic PPA seeking compensatory treatments in clinical settings.