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Published on: July 2, 2013
Effect of transcranial magnetic stimulation on action naming in patients with Alzheimer disease
Maria Cotelli1, Rosa Manenti, Stefano F Cappa
1Istituto di Recovero e Cura a Carattere Scientifico San Giovanni di Dio Fatebenefratelli, University of Brescia, Brescia, Italy.
Objective:
To assess the effect of repetitive transcranial magnetic stimulation (rTMS) to the dorsolateral prefrontal cortex (DLPFC) on picture naming in patients with Alzheimer disease (AD).
Design:
Experimental study. Patients with AD underwent rTMS in real and control conditions during picture-naming tasks.
Setting:
San Giovanni di Dio Fatebenefratelli Scientific Institute in Brescia, Italy. Patients Fifteen patients with probable AD. Intervention High-frequency rTMS was applied to the left and right DLPFC during object and action naming.
Main Outcome Measures:
Language ability was assessed by accuracy of verbal response during online rTMS.
Results:
Stimulation to the left and right DLPFC improved accuracy in action naming.
Conclusions:
These findings indicate that rTMS to the DLPFC, which speeds up action naming in normal controls, improves performance in patients with AD. While the mechanisms of rTMS-induced naming facilitation in these patients are unknown, the procedure may be worth testing as a novel approach to the treatment of language dysfunction.
