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Publications

A Discussion of tACS Literature

The speed of parietal theta frequency drives visuospatial working memory capacity

10/15/2021

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Wolinski, Nina, Nicholas R Cooper, Paul Sauseng, and Vincenzo Romei. 2018. 'The speed of parietal theta frequency drives visuospatial working memory capacity', PLoS biology, 16: e2005348.
 
Summary:        Humans have limited capacity to hold information in mind, or working memory. Previous research shows that slower theta oscillations (4-8Hz) correlates with greater working memory capacity. Wolinski et al. delivered tACS at a slower theta frequency and a faster theta frequency. Slower theta frequency tACS improves working memory capacity relative to faster theta frequency tACS.
 
Pros:
  • Causal test for theoretical models on working memory capacity
  • Analysis of peak frequency is novel
 
Open questions:
  • Theoretical models suggest gamma oscillations are nested within theta oscillations, does slower frequency tACS increase the number of gamma oscillations?
  • Would the effects hold for a larger sample size?
  • How do these effects relate to individual peak theta frequency?
 
Contributed by: Justin Riddle, PhD
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    Every week, there are new and exciting scientific papers published on studies that investigated tACS. Reading and understanding these papers unfortunately requires both access to (sometimes quite expensive) scientific journals and in-depth "insider knowledge." Our goal is to share with you brief summaries of tACS studies that give you a big-picture idea of what the publications are about. There are too many studies to feature all of them but we will continuously update this page. If you have a specific study you would like to get featured, please contact us. The contributors are personnel from the Frohlich Lab and the Carolina Center for Neurostimulation.

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  • Home
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