The Effects of Transcranial Direct Current Stimulation on Narrative Abilities in Primary Progressive Aphasia

Abstract

Transcranial direct current stimulation (tDCS) is a neuromodulation technique that has recently been studied as an adjunct to speech-language therapy in persons with primary progressive aphasia (PPA). Preliminary studies have shown improved language abilities with tDCS-supplemented therapy, primarily in naming, as well as improved generalization and maintenance of skills. However, the effects of tDCS on narrative abilities have not yet been well studied in this population. The present study examined whether the addition of tDCS to anomia therapy improved narrative language measures in 16 participants with PPA versus sham stimulation plus therapy. Results demonstrated that tDCS did not significantly improve narrative language measures in participants with PPA.