The effect of changing the balance between right and left dorsolateral prefrontal cortex on different creativity tasks: A transcranial random noise stimulation study

2021 ◽  
Author(s):  
Javier Peña ◽  
Agurne Sampedro ◽  
Ainara Gómez‐Gastiasoro ◽  
Naroa Ibarretxe‐Bilbao ◽  
Leire Zubiaurre‐Elorza ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Dorsolateral Prefrontal Cortex ◽  
Random Noise ◽  
Transcranial Random Noise Stimulation ◽  
Dorsolateral Prefrontal

scholarly journals How can noise alter neurophysiology in order to improve human behaviour? A combined tRNS and EEG study

2020 ◽  
Author(s):  
James G. Sheffield ◽  
Gal Raz ◽  
Francesco Sella ◽  
Roi Cohen Kadosh
Keyword(s):  
Dorsolateral Prefrontal Cortex ◽  
Random Noise ◽  
Mechanistic Explanation ◽  
Human Behaviour ◽  
Top Down ◽  
Transcranial Random Noise Stimulation ◽  
Specific Behaviour ◽  
Frequency Domains ◽  
Dorsolateral Prefrontal ◽  
Arithmetic Performance

AbstractRandom noise has been shown to improve the detection of suboptimal signals in humans and machines. Based on that, transcranial random noise stimulation (tRNS) has aimed to improve human behaviour by targeting neuronal activity. To uncover the poorly understood mechanistic underpinnings of tRNS, we recorded electroencephalography data during arithmetic training while delivering active or sham tRNS above the dorsolateral prefrontal cortex (dlPFC). By successfully removing the tRNS artefact in the time and frequency domains, we examined the mechanisms that underlie its behavioural improvement. We found that active tRNS improved arithmetic performance and impacts specific ERPs components that are associated with attentional mechanisms. Furthermore, the tRNS effect was maximal in individuals with suboptimal arithmetic ability and neurophysiological measures of top-down control and excitation/inhibition ratio. These results providing a novel mechanistic explanation for the effect of tRNS on human behaviour and highlight how suboptimal task-specific behaviour and neurophysiology predicts its effect.

Trait anxiety moderates the effects of tDCS over the dorsolateral prefrontal cortex (DLPFC) on creativity

2021 ◽  
Vol 177 ◽  
pp. 110804
Author(s):  
Shuoqi Xiang ◽  
Senqing Qi ◽  
Yangping Li ◽  
Luchun Wang ◽  
David Yun Dai ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Trait Anxiety ◽  
Dorsolateral Prefrontal Cortex ◽  
Dorsolateral Prefrontal
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