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Enhancement of multitasking performance and neural oscillations by transcranial alternating current stimulation.

Multitasking is associated with the generation of stimulus-locked theta (4-7 Hz) oscillations arising from prefrontal cortex (PFC). Transcranial alternating current stimulation (tACS) is a non-invasive brain stimulation technique that influences endogenous brain oscillations. Here, we investigate wh... Full description

Journal Title: PloS one 2017, Vol.12(5), p.e0178579
Main Author: Hsu, Wan-Yu
Other Authors: Zanto, Theodore P , van Schouwenburg, Martine R , Gazzaley, Adam
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1932-6203 ; DOI: 10.1371/journal.pone.0178579
Link: http://search.proquest.com/docview/1904910077/?pq-origsite=primo
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title: Enhancement of multitasking performance and neural oscillations by transcranial alternating current stimulation.
format: Article
creator:
  • Hsu, Wan-Yu
  • Zanto, Theodore P
  • van Schouwenburg, Martine R
  • Gazzaley, Adam
subjects:
  • Adolescent–Methods
  • Adult–Methods
  • Electroencephalography–Methods
  • Female–Methods
  • Humans–Methods
  • Male–Methods
  • Transcranial Direct Current Stimulation–Methods
  • Young Adult–Methods
ispartof: PloS one, 2017, Vol.12(5), p.e0178579
description: Multitasking is associated with the generation of stimulus-locked theta (4-7 Hz) oscillations arising from prefrontal cortex (PFC). Transcranial alternating current stimulation (tACS) is a non-invasive brain stimulation technique that influences endogenous brain oscillations. Here, we investigate whether applying alternating current stimulation within the theta frequency band would affect multitasking performance, and explore tACS effects on neurophysiological measures. Brief runs of bilateral PFC theta-tACS were applied while participants were engaged in a multitasking paradigm accompanied by electroencephalography (EEG) data collection. Unlike an active control group, a tACS stimulation group showed enhancement of multitasking performance after a 90-minute session (F.sub.1,35 = 6.63, p = 0.01, [eta]p.sup.2 = 0.16; effect size = 0.96), coupled with significant modulation of posterior beta (13-30 Hz) activities (F.sub.1,32 = 7.66, p = 0.009, [eta]p.sup.2 = 0.19; effect size = 0.96). Across participant regression analyses indicated that those participants with greater increases in frontal theta, alpha and beta oscillations exhibited greater multitasking performance improvements. These results indicate frontal theta-tACS generates benefits on multitasking performance accompanied by widespread neuronal oscillatory changes, and suggests that future tACS studies with extended treatments are worth exploring as promising tools for cognitive enhancement.
language: eng
source:
identifier: E-ISSN: 1932-6203 ; DOI: 10.1371/journal.pone.0178579
fulltext: fulltext
issn:
  • 19326203
  • 1932-6203
url: Link


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titleEnhancement of multitasking performance and neural oscillations by transcranial alternating current stimulation.
creatorHsu, Wan-Yu ; Zanto, Theodore P ; van Schouwenburg, Martine R ; Gazzaley, Adam
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descriptionMultitasking is associated with the generation of stimulus-locked theta (4-7 Hz) oscillations arising from prefrontal cortex (PFC). Transcranial alternating current stimulation (tACS) is a non-invasive brain stimulation technique that influences endogenous brain oscillations. Here, we investigate whether applying alternating current stimulation within the theta frequency band would affect multitasking performance, and explore tACS effects on neurophysiological measures. Brief runs of bilateral PFC theta-tACS were applied while participants were engaged in a multitasking paradigm accompanied by electroencephalography (EEG) data collection. Unlike an active control group, a tACS stimulation group showed enhancement of multitasking performance after a 90-minute session (F.sub.1,35 = 6.63, p = 0.01, [eta]p.sup.2 = 0.16; effect size = 0.96), coupled with significant modulation of posterior beta (13-30 Hz) activities (F.sub.1,32 = 7.66, p = 0.009, [eta]p.sup.2 = 0.19; effect size = 0.96). Across participant regression analyses indicated that those participants with greater increases in frontal theta, alpha and beta oscillations exhibited greater multitasking performance improvements. These results indicate frontal theta-tACS generates benefits on multitasking performance accompanied by widespread neuronal oscillatory changes, and suggests that future tACS studies with extended treatments are worth exploring as promising tools for cognitive enhancement.
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