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Differential effects of high-definition transcranial direct current stimulation on verbal working memory performance according to sensory modality.
Neurosci Lett 2018; 687:131-136NL

Abstract

Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that modulates cortical excitability in a polarity-dependent manner. The diffuse nature of tDCS makes it difficult to investigate the optimal stimulation parameters for more effective and specific cognitive enhancement; to address this deficit, a more focalized stimulation technique, high-definition tDCS (HD-tDCS), has been developed. To date, only a few studies have examined the effects of HD-tDCS on cognitive functions; and none has investigated the effects of HD-tDCS on different sensory modalities of verbal working memory. Therefore, the present study compared the effects of prefrontal HD-tDCS on visual and auditory working memory tasks. Twenty healthy participants completed three sessions of each modality task, and additionally a sustained attention task. Anodal or sham HD-tDCS was administered to the dorsolateral prefrontal cortex (DLPFC) during the second session of the task in a parallel, single-blind design. Anodal stimulation to the DLPFC significantly enhanced the visual verbal working memory accuracy during and 20 min after the stimulation. In contrast, auditory verbal working memory performance was not modulated by anodal stimulation. Anodal stimulation to the DLPFC showed no effect on any other cognitive functions. The present study revealed the differential effects of HD-tDCS on two different modalities (visual vs. auditory) of working memory performance: important preliminary findings for the establishment of a more effective and specific use of tDCS.

Authors+Show Affiliations

Department of Cognitive Behavioral Physiology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan.Department of Cognitive Behavioral Physiology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan; Research Center for Child Mental Development, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan. Electronic address: dmatsuzawa@faculty.chiba-u.jp.Department of Cognitive Behavioral Physiology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan; Center for Medical Sciences, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami, Ami-machi, Inashiki-gun, Ibaraki, 300-0394, Japan.Department of Cognitive Behavioral Physiology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan.Department of Pediatrics, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan.Research Center for Child Mental Development, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan; Division of Child Health & Pediatrics, Faculty of Education, Chiba University, 1-33 Yayoicho, Inageku, Chibashi, Chiba, Japan.Department of Cognitive Behavioral Physiology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan.Department of Cognitive Behavioral Physiology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan; Research Center for Child Mental Development, Chiba University, 1-8-1 Inohana, Chuo, Chiba, 260-8670, Japan.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

30267848

Citation

Naka, Masamitsu, et al. "Differential Effects of High-definition Transcranial Direct Current Stimulation On Verbal Working Memory Performance According to Sensory Modality." Neuroscience Letters, vol. 687, 2018, pp. 131-136.
Naka M, Matsuzawa D, Ishii D, et al. Differential effects of high-definition transcranial direct current stimulation on verbal working memory performance according to sensory modality. Neurosci Lett. 2018;687:131-136.
Naka, M., Matsuzawa, D., Ishii, D., Hamada, H., Uchida, T., Sugita, K., ... Shimizu, E. (2018). Differential effects of high-definition transcranial direct current stimulation on verbal working memory performance according to sensory modality. Neuroscience Letters, 687, pp. 131-136. doi:10.1016/j.neulet.2018.09.047.
Naka M, et al. Differential Effects of High-definition Transcranial Direct Current Stimulation On Verbal Working Memory Performance According to Sensory Modality. Neurosci Lett. 2018 11 20;687:131-136. PubMed PMID: 30267848.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Differential effects of high-definition transcranial direct current stimulation on verbal working memory performance according to sensory modality. AU - Naka,Masamitsu, AU - Matsuzawa,Daisuke, AU - Ishii,Daisuke, AU - Hamada,Hiroyuki, AU - Uchida,Tomoko, AU - Sugita,Katsuo, AU - Sutoh,Chihiro, AU - Shimizu,Eiji, Y1 - 2018/09/26/ PY - 2018/05/20/received PY - 2018/09/23/revised PY - 2018/09/24/accepted PY - 2018/9/30/pubmed PY - 2019/3/8/medline PY - 2018/9/30/entrez KW - High-definition transcranial direct current stimulation KW - Prefrontal cortex KW - Sensory modality KW - Sustained attention KW - Transcranial direct current stimulation KW - Working memory SP - 131 EP - 136 JF - Neuroscience letters JO - Neurosci. Lett. VL - 687 N2 - Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that modulates cortical excitability in a polarity-dependent manner. The diffuse nature of tDCS makes it difficult to investigate the optimal stimulation parameters for more effective and specific cognitive enhancement; to address this deficit, a more focalized stimulation technique, high-definition tDCS (HD-tDCS), has been developed. To date, only a few studies have examined the effects of HD-tDCS on cognitive functions; and none has investigated the effects of HD-tDCS on different sensory modalities of verbal working memory. Therefore, the present study compared the effects of prefrontal HD-tDCS on visual and auditory working memory tasks. Twenty healthy participants completed three sessions of each modality task, and additionally a sustained attention task. Anodal or sham HD-tDCS was administered to the dorsolateral prefrontal cortex (DLPFC) during the second session of the task in a parallel, single-blind design. Anodal stimulation to the DLPFC significantly enhanced the visual verbal working memory accuracy during and 20 min after the stimulation. In contrast, auditory verbal working memory performance was not modulated by anodal stimulation. Anodal stimulation to the DLPFC showed no effect on any other cognitive functions. The present study revealed the differential effects of HD-tDCS on two different modalities (visual vs. auditory) of working memory performance: important preliminary findings for the establishment of a more effective and specific use of tDCS. SN - 1872-7972 UR - https://www.unboundmedicine.com/medline/citation/30267848/Differential_effects_of_high_definition_transcranial_direct_current_stimulation_on_verbal_working_memory_performance_according_to_sensory_modality_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3940(18)30651-7 DB - PRIME DP - Unbound Medicine ER -