• Neurorehabil Neural Repair · Mar 2014

    Controlled Clinical Trial

    Excitatory deep transcranial magnetic stimulation with H-coil over the right homologous Broca's region improves naming in chronic post-stroke aphasia.

    • Raffaella Chieffo, Federico Ferrari, Petronilla Battista, Elise Houdayer, Arturo Nuara, Federica Alemanno, Jubin Abutalebi, Abraham Zangen, Giancarlo Comi, Stefano F Cappa, and Letizia Leocani.
    • 1Scientific Institute Hospital San Raffaele, Milan, Italy.
    • Neurorehabil Neural Repair. 2014 Mar 1;28(3):291-8.

    BackgroundThe role of the right hemisphere in poststroke aphasia recovery is still controversial and the effects of repetitive transcranial magnetic stimulation (rTMS) over the right homologous Broca's region have been seldom investigated.ObjectiveThis study aimed to compare the effect of excitatory, inhibitory, and sham rTMS delivered with H-coil over the right inferior frontal gyrus in chronic aphasic patients.MethodsFive right-handed poststroke aphasic patients underwent a picture naming task before and immediately after each of 3 sessions of rTMS: excitatory (10 Hz), inhibitory (1 Hz), and sham rTMS, in random sequence and separated by at least 1 week.ResultsOnly the excitatory 10-Hz stimulation was associated with a significant improvement in naming performance (P = .043) and was significantly more effective than 1-Hz rTMS (P = .043).ConclusionsA single session of excitatory deep brain rTMS over the right inferior frontal gyrus with H-coil significantly improves naming in right-handed chronic poststroke aphasic patients. This result is in line with the hypothesis of a positive, rather than detrimental, role of the right hemisphere in chronic aphasia due to a left-hemispheric stroke.

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