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Direct-Current Stimulation Does Little to Improve the Outcome of Working Memory Training in Older Adults.
Psychol Sci. 2017 Jul; 28(7):907-920.PS

Abstract

The promise of transcranial direct-current stimulation (tDCS) as a modulator of cognition has appealed to researchers, media, and the general public. Researchers have suggested that tDCS may increase effects of cognitive training. In this study of 123 older adults, we examined the interactive effects of 20 sessions of anodal tDCS over the left prefrontal cortex (vs. sham tDCS) and simultaneous working memory training (vs. control training) on change in cognitive abilities. Stimulation did not modulate gains from pre- to posttest on latent factors of either trained or untrained tasks in a statistically significant manner. A supporting meta-analysis (n = 266), including younger as well as older individuals, showed that, when combined with training, tDCS was not much more effective than sham tDCS at changing working memory performance (g = 0.07, 95% confidence interval, or CI = [-0.21, 0.34]) and global cognition performance (g = -0.01, 95% CI = [-0.29, 0.26]) assessed in the absence of stimulation. These results question the general usefulness of current tDCS protocols for enhancing the effects of cognitive training on cognitive ability.

Authors+Show Affiliations

Aging Research Center, Karolinska Institutet and Stockholm University.Aging Research Center, Karolinska Institutet and Stockholm University.Aging Research Center, Karolinska Institutet and Stockholm University.Aging Research Center, Karolinska Institutet and Stockholm University.

Pub Type(s)

Journal Article
Meta-Analysis

Language

eng

PubMed ID

28509625

Citation

Nilsson, Jonna, et al. "Direct-Current Stimulation Does Little to Improve the Outcome of Working Memory Training in Older Adults." Psychological Science, vol. 28, no. 7, 2017, pp. 907-920.
Nilsson J, Lebedev AV, Rydström A, et al. Direct-Current Stimulation Does Little to Improve the Outcome of Working Memory Training in Older Adults. Psychol Sci. 2017;28(7):907-920.
Nilsson, J., Lebedev, A. V., Rydström, A., & Lövdén, M. (2017). Direct-Current Stimulation Does Little to Improve the Outcome of Working Memory Training in Older Adults. Psychological Science, 28(7), 907-920. https://doi.org/10.1177/0956797617698139
Nilsson J, et al. Direct-Current Stimulation Does Little to Improve the Outcome of Working Memory Training in Older Adults. Psychol Sci. 2017;28(7):907-920. PubMed PMID: 28509625.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Direct-Current Stimulation Does Little to Improve the Outcome of Working Memory Training in Older Adults. AU - Nilsson,Jonna, AU - Lebedev,Alexander V, AU - Rydström,Anders, AU - Lövdén,Martin, Y1 - 2017/05/16/ PY - 2017/5/17/pubmed PY - 2018/4/24/medline PY - 2017/5/17/entrez KW - brain stimulation KW - cognitive training KW - tDCS KW - transfer KW - working memory training SP - 907 EP - 920 JF - Psychological science JO - Psychol Sci VL - 28 IS - 7 N2 - The promise of transcranial direct-current stimulation (tDCS) as a modulator of cognition has appealed to researchers, media, and the general public. Researchers have suggested that tDCS may increase effects of cognitive training. In this study of 123 older adults, we examined the interactive effects of 20 sessions of anodal tDCS over the left prefrontal cortex (vs. sham tDCS) and simultaneous working memory training (vs. control training) on change in cognitive abilities. Stimulation did not modulate gains from pre- to posttest on latent factors of either trained or untrained tasks in a statistically significant manner. A supporting meta-analysis (n = 266), including younger as well as older individuals, showed that, when combined with training, tDCS was not much more effective than sham tDCS at changing working memory performance (g = 0.07, 95% confidence interval, or CI = [-0.21, 0.34]) and global cognition performance (g = -0.01, 95% CI = [-0.29, 0.26]) assessed in the absence of stimulation. These results question the general usefulness of current tDCS protocols for enhancing the effects of cognitive training on cognitive ability. SN - 1467-9280 UR - https://www.unboundmedicine.com/medline/citation/28509625/Direct_Current_Stimulation_Does_Little_to_Improve_the_Outcome_of_Working_Memory_Training_in_Older_Adults_ L2 - http://journals.sagepub.com/doi/full/10.1177/0956797617698139?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -