Thalamic encoding of lexical status is lateralized during reading aloud

Dengyu Wang, Witold J. Lipski, Alan Bush, Anna Chrabaszcz, Christina Dastolfo-Hromack, Michael W. Dickey, Julie A. Fiez & R. Mark Richardson
To explore whether the thalamus participates in lexical status encoding, local field potentials were recorded in patients undergoing deep brain stimulation lead implantation while they read aloud single-syllable words and nonwords. Bilateral decreases in thalamic beta (12-30Hz) activity were preferentially locked to stimulus presentation, and these decreases were greater when nonwords were read. Increased broadband gamma (70-150Hz) activity also was locked preferentially to speech onset bilaterally, but greater nonword-related increases in this activity were observed...
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