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Modulating lexical and semantic processing by transcranial direct current stimulation

Guardado en:
Udgivet i:Experimental Brain Research vol. 226, no. 1 (Apr 2013), p. 121
Hovedforfatter: Weltman, Keren
Andre forfattere: Lavidor, Michal
Udgivet:
Springer Nature B.V.
Fag:
Bar-Ilan University
Adult
Decision Making > physiology
Female
Humans
Male
Pilot Projects
Psychomotor Performance > physiology
Reading
Semantics
Transcranial Magnetic Stimulation > methods
Young Adult
Phonology
Brain research
Specialization
Stimuli
Lexical processing
Transcranial direct current stimulation
Priming
Women
Lexical semantics
Stimulation
Semantic processing
Lexical decision task
Lexical access
Lateralization
Semantic priming
Dominance
Online adgang:Citation/Abstract
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Resumen:Here we aim to evaluate the ability of transcranial direct current stimulation (tDCS), which is applied over Wernickeâ[euro](TM)s area and its right homologue, to influence lexical decisions and semantic priming and establish an involvement for temporo-parietal areas in lexical and semantic processing. Thirty-two subjects (17 women) completed a lexical decision task and a semantic priming task while receiving 20Â min of bilateral tDCS stimulation (right anodal/left cathodal or left anodal/right cathodal stimulation) or sham stimulation. We hypothesized that right anodal/left cathodal stimulation over temporo-parietal areas would selectively interrupt the typical lexical processing dominance of the left hemisphere and facilitate mediated priming, while left anodal/right cathodal stimulation would selectively facilitate lexical processing and direct priming. Results showed impaired lexical processing under right anodal/left cathodal stimulation in comparison with sham and left anodal/right cathodal stimulation. Results are discussed in light of previous findings and hemispheric lateralization models.[PUBLICATION ABSTRACT]   Here we aim to evaluate the ability of transcranial direct current stimulation (tDCS), which is applied over Wernicke's area and its right homologue, to influence lexical decisions and semantic priming and establish an involvement for temporo-parietal areas in lexical and semantic processing. Thirty-two subjects (17 women) completed a lexical decision task and a semantic priming task while receiving 20 min of bilateral tDCS stimulation (right anodal/left cathodal or left anodal/right cathodal stimulation) or sham stimulation. We hypothesized that right anodal/left cathodal stimulation over temporo-parietal areas would selectively interrupt the typical lexical processing dominance of the left hemisphere and facilitate mediated priming, while left anodal/right cathodal stimulation would selectively facilitate lexical processing and direct priming. Results showed impaired lexical processing under right anodal/left cathodal stimulation in comparison with sham and left anodal/right cathodal stimulation. Results are discussed in light of previous findings and hemispheric lateralization models.
ISSN:0014-4819
1432-1106
DOI:10.1007/s00221-013-3416-5
Fuente:Health & Medical Collection