scholarly journals Transcranial Direct Current Stimulation Targeting Primary Motor Versus Dorsolateral Prefrontal Cortices: Proof-of-Concept Study Investigating Functional Connectivity of Thalamocortical Networks Specific to Sensory-Affective Information Processing

2017 ◽  
Vol 7 (3) ◽  
pp. 182-196 ◽  
Author(s):  
Vishwanath Sankarasubramanian ◽  
David A. Cunningham ◽  
Kelsey A. Potter-Baker ◽  
Erik B. Beall ◽  
Sarah M. Roelle ◽  
...  
Keyword(s):  
Information Processing ◽  
Functional Connectivity ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Proof Of Concept ◽  
Concept Study ◽  
Direct Current Stimulation ◽  
Dorsolateral Prefrontal ◽  
Affective Information Processing ◽  
Affective Information

Transcranial Direct Current Stimulation Modulates Connectivity of Left Dorsolateral Prefrontal Cortex with Distributed Cortical Networks

2021 ◽  
pp. 1-15
Author(s):  
Kamin Kim ◽  
Matthew S. Sherwood ◽  
Lindsey K. McIntire ◽  
Andy R. McKinley ◽  
Charan Ranganath
Keyword(s):  
Prefrontal Cortex ◽  
Functional Connectivity ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Resting State ◽  
Dorsolateral Prefrontal Cortex ◽  
Resting State Fmri ◽  
Term Memory ◽  
Direct Current Stimulation ◽  
Dorsolateral Prefrontal

Abstract Studies have shown that transcranial direct current stimulation increases neuronal excitability of the targeted region and general connectivity of relevant functional networks. However, relatively little is understood on how the stimulation affects the connectivity relationship of the target with regions across the network structure of the brain. Here, we investigated the effects of transcranial direct current stimulation on the functional connectivity of the targeted region using resting-state fMRI scans of the human brain. Anodal direct current stimulation was applied to the left dorsolateral prefrontal cortex (lDLPFC; cathode on the right bicep), which belongs to the frontoparietal control network (FPCN) and is commonly targeted for neuromodulation of various cognitive functions including short-term memory, long-term memory, and cognitive control. lDLPFC's connectivity characteristics were quantified as graph theory measures, from the resting-state fMRI scans obtained prior to and following the stimulation. Critically, we tested pre- to poststimulation changes of the lDLPFC connectivity metrics following an active versus sham stimulation. We found that the stimulation had two distinct effects on the connectivity of lDLPFC: for Brodmann's area (BA) 9, it increased the functional connectivity between BA 9 and other nodes within the FPCN; for BA 46, net connectivity strength was not altered within FPCN, but connectivity distribution across networks (participation coefficient) was decreased. These findings provide insights that the behavioral changes as the functional consequences of stimulation may come about because of the increased role of lDLPFC in the FPCN.

scholarly journals The Hypnotic Analgesia Suggestion Mitigated the Effect of the Transcranial Direct Current Stimulation on the Descending Pain Modulatory System: A Proof of Concept Study

2020 ◽  
Vol Volume 13 ◽  
pp. 2297-2311
Author(s):  
Gerardo Beltran Serrano ◽  
Laura Pooch Rodrigues ◽  
Bruno Schein ◽  
Maxciel Zortea ◽  
Iraci Lucena da Silva Torres ◽  
...  
Keyword(s):  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Proof Of Concept ◽  
Concept Study ◽  
Direct Current Stimulation ◽  
System A ◽  
Hypnotic Analgesia

scholarly journals The effect of transcranial direct current stimulation of dorsolateral prefrontal cortex on performing a sequential dual task: a randomized experimental study

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Rasool Abedanzadeh ◽  
Saeed Alboghebish ◽  
Parisa Barati
Keyword(s):  
Prefrontal Cortex ◽  
Information Processing ◽  
Direct Current ◽  
Dual Task ◽  
Transcranial Direct Current Stimulation ◽  
Dorsolateral Prefrontal Cortex ◽  
Information Processing Speed ◽  
Dual Tasks ◽  
Direct Current Stimulation ◽  
Dorsolateral Prefrontal

AbstractWhen it comes to simultaneous processing of two tasks, information processing capacity is usually below par and not desirable. Therefore, this preliminary study aimed to investigate the effect of transcranial direct-current stimulation (tDCS) of dorsolateral prefrontal cortex (DLPFC) on performing dual tasks. Twenty-six students (average age 25.2 ± 2.43 years) were selected and then randomly divided into experimental and sham groups. All of the participants conducted the Stroop effect test in a dual task situation before and after the tDCS. This test included two intervals between the stimuli of 100 and 900 ms. The results of mixed-ANOVA showed that the average second reaction time of the experimental stimulated group was reduced (in both dual tasks with congruent and incongruent stimuli) significantly after the tDCS. Therefore, it can be stated that the tDCS of the DLPFC increases the information processing speed and the capacity of attention and, as a result, decreases the effect of the psychological refractory period.

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