Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/93831
Title: The effects of direct current stimulation and random noise stimulation on attention networks
Authors: Lema, Alberto
Carvalho, Sandra
Fregni, Felipe 
Gonçalves, Óscar Filipe Coelho Neves 
Leite, Jorge 
Issue Date: 2021
Volume: 11
Issue: 1
Abstract: Attention is a complex cognitive process that selects specific stimuli for further processing. Previous research suggested the existence of three attentional networks: alerting, orienting and executive. However, one important topic is how to enhance the efficiency of attentional networks. In this context, understanding how this system behaves under two different modulatory conditions, namely transcranial direct current stimulation (tDCS) and transcranial Random Noise Stimulation (tRNS), will provide important insights towards the understanding of the attention network system. Twenty-seven healthy students took part on a randomized single-blinded crossover study, testing the effects that involved three modalities of unilateral stimulation (tRNS, anodal tDCS, and sham) over the DLPFC, during the performance of the attention network test (ANT) in three different conditions: standard, speed and accuracy. Results showed that tRNS was able to increase attention during more complex situations, namely by increasing alerting and decreasing conflict effect in the executive network. Under the Speed condition, tRNS increased efficiency of the alerting network, as well as under the more demanding conflict network, tRNS overall increased the performance when comparing to sham. No statistical significant effects of tDCS were observed. These results are compatible with the attention requiring the synchronization of pre-existing networks, rather the reinforcement or creation of new pathways.
URI: http://hdl.handle.net/10316/93831
ISSN: 2045-2322
DOI: 10.1038/s41598-021-85749-7
Rights: openAccess
Appears in Collections:FPCEUC - Artigos em Revistas Internacionais

Show full item record

Page view(s)

16
checked on Apr 9, 2021

Download(s)

6
checked on Apr 9, 2021

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.