The effect of transcranial random noise stimulation (tRNS) over bilateral posterior parietal cortex on divergent and convergent thinking

Peña, Javier; Sampedro, Agurne; Ibarretxe‐Bilbao, Naroa; Zubiaurre-Elorza, Leire; Aizpurua, Aralar; Ojeda, Natalia

doi:10.1038/s41598-020-72532-3

Cited by 9 publications

(3 citation statements)

References 83 publications

(161 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ruggiero et al (2018) compared L + R− and L − R + over the ATL and found no significant effect on CT. Aihara et al (2017) found no effect on CT of L − R+ stimulation applied to the ATL or only applied to the right ATL. Overall, results from these forms of transcranial stimulation, along with neuroimaging studies (Zhang et al, 2020) indicate that the left DLPFC is strongly related to CT, although given the complex nature of this specific task (RAT), other brain networks such as bilateral PPC (Pe ña et al, 2020;Zmigrod et al, 2015) and the left ATL (Ruggiero et al, 2018) may also contribute, although in a different way.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Changing the Balance Between Right and Left Dorsolateral Prefrontal Cortex on Different Creativity Tasks: A Transcranial Random Noise Stimulation Study

Peña

Sampedro

Gómez‐Gastiasoro

et al. 2021

Journal of Creative Behavior

Self Cite

View full text Add to dashboard Cite

Transcranial random noise stimulation (tRNS) increases performance in some perceptual tasks. However, little is known about its effect on creativity. Although dorsolateral prefrontal cortex (DLPFC) has been postulated as an important cortical area related to creativity, the relative role of left and right DLPFC is still unclear. We aimed to compare the effect of anodal left/cathodal right (L + R−) and cathodal left/anodal right (L − R+) tRNS over the DLPFC. Eighty-four participants were randomly assigned to L + R−, L−R+ or sham group. Current was set at 2 mA (100-500 Hz) with a 1 mA direct current offset (20 min). Creativity was assessed before and during tRNS with the Remotes Associates Test (RAT), Unusual Uses (UU) and Picture Completion (PC) from Torrance Test of Creative Thinking, nine-dot problem and matchstick arithmetic problems. Bootstrapped analysis of covariance (under-stimulation scores controlling for baseline) showed that L + R− and L − R+ groups had higher scores than sham in UU whereas only L + R− improved in RAT compared to sham. The L − R+ group performed significantly better than L + R− and sham groups in PC, nine-dot problem and matchstick arithmetic problems. L + R− DLPFC may help verbal creative thinking whereas the L − R + seems to produce a "releasing effect" through insight problem solving and originality.

show abstract

Section: Discussionmentioning

confidence: 99%

The Effect of Changing the Balance Between Right and Left Dorsolateral Prefrontal Cortex on Different Creativity Tasks: A Transcranial Random Noise Stimulation Study

Peña

Sampedro

Gómez‐Gastiasoro

et al. 2021

Journal of Creative Behavior

Self Cite

View full text Add to dashboard Cite

show abstract

“…Alternatively, it could be enhanced through creative activities aimed at improving well-being, such as art therapy 55 . Furthermore, creativity could also be trained indirectly through other kind of interventions such as humor intervention or laughter therapy 53 , through cognitive remediation 57 , or by means of transcranial direct current and random noise stimulation [58][59][60] . In addition, the inclusion of training of positive resources such as creativity or humor in rehabilitation programs could encourage adherence to treatment and motivation, since it may be more interesting for patients.…”

Section: Discussionmentioning

confidence: 99%

The impact of creativity on functional outcome in schizophrenia: a mediational model

et al. 2021

Self Cite

View full text Add to dashboard Cite

Functional impairment remains one of the most challenging issues for treatment in schizophrenia. However, previous studies have mainly focused on the negative impact of symptoms excluding variables that could positively impact functional outcome, such as creativity, which is considered an adaptive capacity for real-life problem-solving. This study analyzed the predictive role of creativity on functional outcome in 96 patients with schizophrenia through a mediational model, including sociodemographic, clinical, neurocognitive, and social cognitive variables. Path analysis revealed that creativity significantly mediated the relationship between neurocognition and functional outcome, and that creativity mediated between negative symptoms and functional outcome. Additionally, neurocognition was directly associated with functional outcome and social functioning was associated with creativity. The involvement of creativity in functional outcome could have relevant implications for the development of new interventions. These findings open up a new field of research on additional personal resources as possible factors of functional outcome in schizophrenia and other diseases.

show abstract

“…Moreover, tRNS is not as perceptible as tDCS regarding skin perception ( Ambrus et al, 2010 ). In creativity, previous studies using only tRNS have shown a significant improvement in visual DT (originality) and RAT after posterior parietal cortex stimulation ( Peña et al, 2020 ), and an improvement in RAT, unusual uses (fluency and originality) after stimulating DLPFC ( Peña et al, 2019 ).…”

Section: Introductionmentioning

confidence: 98%

Comparing transcranial direct current stimulation and transcranial random noise stimulation over left dorsolateral prefrontal cortex and left inferior frontal gyrus: Effects on divergent and convergent thinking

Peña

Sampedro

Balboa-Bandeira

et al. 2022

Front. Hum. Neurosci.

Self Cite

View full text Add to dashboard Cite

The essential role of creativity has been highlighted in several human knowledge areas. Regarding the neural underpinnings of creativity, there is evidence about the role of left dorsolateral prefrontal cortex (DLPFC) and left inferior frontal gyrus (IFG) on divergent thinking (DT) and convergent thinking (CT). Transcranial stimulation studies suggest that the left DLPFC is associated with both DT and CT, whereas left IFG is more related to DT. However, none of the previous studies have targeted both hubs simultaneously and compared transcranial direct current stimulation (tDCS) and random noise stimulation (tRNS). Additionally, given the relationship between cognitive flexibility and creativity, we included it in order to check if the improvement in creativity may be mediated by cognitive flexibility. In this double-blind, between-subjects study, 66 healthy participants were randomly assigned to one of three groups (N = 22) that received a transcranial direct current stimulation (tDCS), transcranial random noise stimulation (tRNS), or sham for 20 min. The tDCS group received 1.5 mA with the anode over the left DLPFC and cathode over the left IFG. Locations in tRNS group were the same and they received 1.5 mA of high frequency tRNS (100–500 Hz). Divergent thinking was assessed before (baseline) and during stimulation with unusual uses (UU) and picture completion (PC) subtests from Torrance Creative thinking Test, whereas convergent thinking was evaluated with the remote association test (RAT). Stroop test was included to assess cognitive flexibility. ANCOVA results of performance under stimulation (controlling for baseline performance) showed that there were significant differences in PC (F = 3.35, p = 0.042, np2 = 0.10) but not in UU (F = 0.61, p = 0.546) and RAT (F = 2.65, p = 0.079) scores. Post-hoc analyses showed that tRNS group had significantly higher scores compared to sham (p = 0.004) in PC. More specifically, tRNS showed higher performance in fluency (p = 0.012) and originality (p = 0.021) dimensions of PC compared to sham. Regarding cognitive flexibility, we did not find any significant effect of any of the stimulation groups (F = 0.34, p = 0.711). Therefore, no further mediation analyses were performed. Finally, the group that received tDCS reported more adverse effects than sham group (F = 3.46, p = 0.035). Altogether, these results suggest that tRNS may have some advantages over tDCS in DT.

show abstract

The effect of transcranial random noise stimulation (tRNS) over bilateral posterior parietal cortex on divergent and convergent thinking

Cited by 9 publications

References 83 publications

The Effect of Changing the Balance Between Right and Left Dorsolateral Prefrontal Cortex on Different Creativity Tasks: A Transcranial Random Noise Stimulation Study

The Effect of Changing the Balance Between Right and Left Dorsolateral Prefrontal Cortex on Different Creativity Tasks: A Transcranial Random Noise Stimulation Study

The impact of creativity on functional outcome in schizophrenia: a mediational model

Comparing transcranial direct current stimulation and transcranial random noise stimulation over left dorsolateral prefrontal cortex and left inferior frontal gyrus: Effects on divergent and convergent thinking

Contact Info

Product

Resources

About