Modulating the interhemispheric balance in healthy participants with transcranial direct current stimulation: No significant effects on word or sentence processing
| Autor: | Valeriya Zelenkova, Svetlana Malyutina, Elise J. Oosterhuis, Matteo Feurra, Olga Buivolova, Nikita Zmanovsky |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Linguistics and Language medicine.medical_specialty Cognitive Neuroscience medicine.medical_treatment Experimental and Cognitive Psychology Stimulation Audiology Transcranial Direct Current Stimulation Functional Laterality 050105 experimental psychology Language and Linguistics Sentence processing 03 medical and health sciences Speech and Hearing 0302 clinical medicine medicine Humans 0501 psychology and cognitive sciences Balance (ability) Transcranial direct-current stimulation 05 social sciences Linguistics Broca Area Large sample Reading Brain stimulation Healthy individuals Visual Perception Female Psychology 030217 neurology & neurosurgery |
| Zdroj: | Brain and Language. 186:60-66 |
| ISSN: | 0093-934X |
| DOI: | 10.1016/j.bandl.2018.09.004 |
| Popis: | Patient studies and brain stimulation evidence suggest that language processing can be enhanced by altering the interhemispheric balance: namely, preferentially enhancing left-hemisphere activity while suppressing right-hemisphere activity. To our knowledge, no study has yet compared the effects of such bilateral brain stimulation to both logically necessary control conditions (separate left- and right-hemisphere stimulation). This study did so in a between-group sham-controlled design, applying transcranial direct current stimulation over Broca's area and/or its homologue in 72 healthy participants. The effects were measured not only in a single-word-level task but also in a sentence-level task, rarely tested previously. We did not find either any significant overall effects of stimulation or greater stimulation effects in the bilateral compared to control groups. This null result, obtained in a large sample, contributes to the debate on whether tDCS can modulate language processing in healthy individuals. |
| Databáze: | OpenAIRE |
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