Ambrus, Geza Gergely and Zimmer, Marta and Kincses, Zsigmond Tamas and Harza, Iren and Kovacs, Gyula and Paulus, Walter and Antal, Andrea (2011) The enhancement of cortical excitability over the DLPFC before and during training impairs categorization in the prototype distortion task. NEUROPSYCHOLOGIA, 49 (7). pp. 1974-1980. ISSN 0028-3932, 1873-3514
Full text not available from this repository. (Request a copy)Abstract
The present study investigated the effects of transcranial weak electrical stimulation techniques applied to the right and left dorsolateral prefrontal cortex (DLPFC) on categorization learning measured using a variant of the prototype distortion task. During the training phase of this task subjects saw low- and high distortions of a prototype dot-pattern. 60 participants received 10 min of either anodal or cathodal transcranial direct current (tDCS), transcranial random noise (tRNS) or sham stimulation before and during the training. We have assessed the effects of the intervention during a test phase, where the subjects had to decide whether the consecutive high- and low-distortion versions of the prototype or random patterns that were presented belonged to the category established in the training phase. Our results show that the categorization of prototypes is significantly impaired by the application of anodal tDCS and tRNS to the DLPFC. The prototype-effect, observable in the case of the sham stimulation group, was severed in all active stimulation conditions. (C) 2011 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DIRECT-CURRENT STIMULATION; PRIMARY MOTOR CORTEX; PREFRONTAL CORTEX; FUNCTIONAL MRI; VISUAL-CORTEX; HUMAN BRAIN; RECOGNITION MEMORY; CATEGORY KNOWLEDGE; WORKING-MEMORY; SYSTEMS; Transcranial direct current stimulation; Transcranial random noise stimulation; Prototype distortion task; Visual categorization; Dorsolateral prefrontal cortex |
| Subjects: | 100 Philosophy & psychology > 150 Psychology |
| Divisions: | Human Sciences > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Jun 2020 13:28 |
| Last Modified: | 15 Jun 2020 13:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/20772 |
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