High-Definition tDCS of Noun and Verb Retrieval in Naming and Lexical Decision

摘要: High-definition transcranial direct current stimulation (HD-tDCS) is a novel brain method that has high potential for use in language therapy speakers with aphasia, due to its safety and focality. This study aimed obtain foundational data on using HD-tDCS modulate processing healthy speakers. Participants received either of Broca’s area or the left angular gyrus (20 min anodal, cathodal, sham separate days), followed by naming lexical decision tasks single-word verb noun stimuli. We found cathodal over both increased speed verbs nouns, challenging traditional view as suppressive leading decreased performance. The effect did not extend task. Additionally, effects specific types depended order their administration, suggesting possible physiological carry-over and/or task novelty effects. These results are relevant application enhance neural plasticity patients neurogenic disorders.