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Association between long-range temporal correlations in intrinsic EEG activity and subjective sense of identity

Association between long-range temporal correlations in intrinsic EEG activity and subjective sense of identity

Authors :
Kazumi Sugimura
Yasuhiro Iwasa
Ryota Kobayashi
Tatsuru Honda
Junya Hashimoto
Shiho Kashihara
Jianhong Zhu
Kazuki Yamamoto
Tsuyoshi Kawahara
Mayo Anno
Risa Nakagawa
Kai Hatano
Takashi Nakao
Source :
Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
Publication Year :
2021
Publisher :
Nature Portfolio, 2021.

Abstract

Abstract The long-range temporal correlation (LRTC) in resting-state intrinsic brain activity is known to be associated with temporal behavioral patterns, including decision making based on internal criteria such as self-knowledge. However, the association between the neuronal LRTC and the subjective sense of identity remains to be explored; in other words, whether our subjective sense of consistent self across time relates to the temporal consistency of neural activity. The present study examined the relationship between the LRTC of resting-state scalp electroencephalography (EEG) and a subjective sense of identity measured by the Erikson Psychosocial Stage Inventory (EPSI). Consistent with our prediction based on previous studies of neuronal-behavioral relationships, the frontocentral alpha LRTC correlated negatively with identity confusion. Moreover, from the descriptive analyses, centroparietal beta LRTC showed negative correlations with identity confusion, and frontal theta LRTC showed positive relationships with identity synthesis. These results suggest that more temporal consistency (reversely, less random noise) in intrinsic brain activity is associated with less confused and better-synthesized identity. Our data provide further evidence that the LRTC of intrinsic brain activity might serve as a noise suppression mechanism at the psychological level.

Subjects

Subjects :
Medicine
Science

Details

Language :
English
ISSN :
20452322
Volume :
11
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Scientific Reports
Publication Type :
Academic Journal
Accession number :
edsdoj.fa21ac4acb0a4f33b31ea67dbdaa825b
Document Type :
article
Full Text :
https://doi.org/10.1038/s41598-020-79444-2