TY - JOUR
T1 - Originality of divergent thinking is associated with working memory–related brain activity
T2 - Evidence from a large sample study: Originality and brain activity
AU - Takeuchi, Hikaru
AU - Taki, Yasuyuki
AU - Nouchi, Rui
AU - Yokoyama, Ryoichi
AU - Kotozaki, Yuka
AU - Nakagawa, Seishu
AU - Sekiguchi, Atsushi
AU - Iizuka, Kunio
AU - Hanawa, Sugiko
AU - Araki, Tsuyoshi
AU - Miyauchi, Carlos Makoto
AU - Sakaki, Kohei
AU - Sassa, Yuko
AU - Nozawa, Takayuki
AU - Ikeda, Shigeyuki
AU - Yokota, Susumu
AU - Magistro, Daniele
AU - Kawashima, Ryuta
N1 - Funding Information:
We thank Yuki Yamada for operating the MRI scanner, Haruka Nouchi for conducting the psychological tests, all other assistants for helping with the experiments and the study, the study participants, and all our other colleagues at IDAC, Tohoku University , for their support. This study was supported by JST / RISTEX , JST / CREST , a Grant-in-Aid for Young Scientists (B) (KAKENHI 23700306) and a Grant-in-Aid for Young Scientists (A) (KAKENHI 25700012) from the Ministry of Education, Culture, Sports, Science, and Technology . The authors would like to thank Enago ( www.enago.jp ) for the English language review.
Funding Information:
We thank Yuki Yamada for operating the MRI scanner, Haruka Nouchi for conducting the psychological tests, all other assistants for helping with the experiments and the study, the study participants, and all our other colleagues at IDAC, Tohoku University, for their support. This study was supported by JST/RISTEX, JST/CREST, a Grant-in-Aid for Young Scientists (B) (KAKENHI 23700306) and a Grant-in-Aid for Young Scientists (A) (KAKENHI 25700012) from the Ministry of Education, Culture, Sports, Science, and Technology. The authors would like to thank Enago (www.enago.jp) for the English language review.
Publisher Copyright:
© 2020 The Author(s)
PY - 2020/8/1
Y1 - 2020/8/1
N2 - The originality of creativity measured by divergent thinking (CMDT) is a unique variable that is positively correlated with psychometric intelligence and other psychological measures. Here, we aimed to determine the associations of CMDT originality/fluency scores and brain activity associated with working memory (WM) and simple cognitive processes during the N-back paradigm in a cohort of 1221 young adults. We observed that originality/fluency scores were associated with greater brain activity during the 0-back simple cognitive task and 2-back WM task in key nodes of the ventral attention system in the right hemisphere. Further, subjects with higher originality/fluency scores showed lower task-induced deactivations in areas of the default mode network, especially during the 2-back task. Psychological analyses revealed the associations of originality/fluency scores with both psychometric intelligence and systemizing. We also observed the effects of interaction between sex and originality/fluency scores on functional activity during the 0-back task in posterior parts of the default mode network together with other areas as well as simple processing speed. These results indicate that the originality of CMDT is associated with (a) greater activation of the ventral attention system, which is involved in reorienting attention and (b) reduced task-induced deactivation of the default mode network, which is indicative of alterations in attentional reallocation, and (c) cognitive correlates of originality of CMDT and revealed sex differences in these associations.
AB - The originality of creativity measured by divergent thinking (CMDT) is a unique variable that is positively correlated with psychometric intelligence and other psychological measures. Here, we aimed to determine the associations of CMDT originality/fluency scores and brain activity associated with working memory (WM) and simple cognitive processes during the N-back paradigm in a cohort of 1221 young adults. We observed that originality/fluency scores were associated with greater brain activity during the 0-back simple cognitive task and 2-back WM task in key nodes of the ventral attention system in the right hemisphere. Further, subjects with higher originality/fluency scores showed lower task-induced deactivations in areas of the default mode network, especially during the 2-back task. Psychological analyses revealed the associations of originality/fluency scores with both psychometric intelligence and systemizing. We also observed the effects of interaction between sex and originality/fluency scores on functional activity during the 0-back task in posterior parts of the default mode network together with other areas as well as simple processing speed. These results indicate that the originality of CMDT is associated with (a) greater activation of the ventral attention system, which is involved in reorienting attention and (b) reduced task-induced deactivation of the default mode network, which is indicative of alterations in attentional reallocation, and (c) cognitive correlates of originality of CMDT and revealed sex differences in these associations.
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U2 - 10.1016/j.neuroimage.2020.116825
DO - 10.1016/j.neuroimage.2020.116825
M3 - Article
C2 - 32344064
AN - SCOPUS:85084109759
SN - 1053-8119
VL - 216
JO - NeuroImage
JF - NeuroImage
M1 - 116825
ER -