Gating of memory encoding of time-delayed cross-frequency MEG networks revealed by graph filtration based on persistent homology

Research output: Contribution to journalArticle

Standard

Gating of memory encoding of time-delayed cross-frequency MEG networks revealed by graph filtration based on persistent homology. / Hahm, Jarang; Lee, Hyekyoung; Park, Hyojin; Kang, Eunjoo; Kim, Yu Kyeong; Chung, Chun Kee; Kang, Hyejin; Lee, Dong Soo.

In: Scientific Reports, Vol. 7, 41592, 07.02.2017.

Research output: Contribution to journalArticle

Harvard

APA

Vancouver

Author

Hahm, Jarang ; Lee, Hyekyoung ; Park, Hyojin ; Kang, Eunjoo ; Kim, Yu Kyeong ; Chung, Chun Kee ; Kang, Hyejin ; Lee, Dong Soo. / Gating of memory encoding of time-delayed cross-frequency MEG networks revealed by graph filtration based on persistent homology. In: Scientific Reports. 2017 ; Vol. 7.

Bibtex

@article{b1fdf42219fb4bef87498f025de2524e,
title = "Gating of memory encoding of time-delayed cross-frequency MEG networks revealed by graph filtration based on persistent homology",
abstract = "To explain gating of memory encoding, magnetoencephalography (MEG) was analyzed over multi-regional network of negative correlations between alpha band power during cue (cue-alpha) and gamma band power during item presentation (item-gamma) in Remember (R) and No-remember (NR) condition. Persistent homology with graph filtration on alpha-gamma correlation disclosed topological invariants to explain memory gating. Instruction compliance (R-hits minus NR-hits) was significantly related to negative coupling between the left superior occipital (cue-alpha) and the left dorsolateral superior frontal gyri (item-gamma) on permutation test, where the coupling was stronger in R than NR. In good memory performers (R-hits minus false alarm), the coupling was stronger in R than NR between the right posterior cingulate (cue-alpha) and the left fusiform gyri (item-gamma). Gating of memory encoding was dictated by inter-regional negative alpha-gamma coupling. Our graph filtration over MEG network revealed these inter-regional time-delayed cross-frequency connectivity serve gating of memory encoding.",
keywords = "Attention, Network topology",
author = "Jarang Hahm and Hyekyoung Lee and Hyojin Park and Eunjoo Kang and Kim, {Yu Kyeong} and Chung, {Chun Kee} and Hyejin Kang and Lee, {Dong Soo}",
year = "2017",
month = feb
day = "7",
doi = "10.1038/srep41592",
language = "English",
volume = "7",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Gating of memory encoding of time-delayed cross-frequency MEG networks revealed by graph filtration based on persistent homology

AU - Hahm, Jarang

AU - Lee, Hyekyoung

AU - Park, Hyojin

AU - Kang, Eunjoo

AU - Kim, Yu Kyeong

AU - Chung, Chun Kee

AU - Kang, Hyejin

AU - Lee, Dong Soo

PY - 2017/2/7

Y1 - 2017/2/7

N2 - To explain gating of memory encoding, magnetoencephalography (MEG) was analyzed over multi-regional network of negative correlations between alpha band power during cue (cue-alpha) and gamma band power during item presentation (item-gamma) in Remember (R) and No-remember (NR) condition. Persistent homology with graph filtration on alpha-gamma correlation disclosed topological invariants to explain memory gating. Instruction compliance (R-hits minus NR-hits) was significantly related to negative coupling between the left superior occipital (cue-alpha) and the left dorsolateral superior frontal gyri (item-gamma) on permutation test, where the coupling was stronger in R than NR. In good memory performers (R-hits minus false alarm), the coupling was stronger in R than NR between the right posterior cingulate (cue-alpha) and the left fusiform gyri (item-gamma). Gating of memory encoding was dictated by inter-regional negative alpha-gamma coupling. Our graph filtration over MEG network revealed these inter-regional time-delayed cross-frequency connectivity serve gating of memory encoding.

AB - To explain gating of memory encoding, magnetoencephalography (MEG) was analyzed over multi-regional network of negative correlations between alpha band power during cue (cue-alpha) and gamma band power during item presentation (item-gamma) in Remember (R) and No-remember (NR) condition. Persistent homology with graph filtration on alpha-gamma correlation disclosed topological invariants to explain memory gating. Instruction compliance (R-hits minus NR-hits) was significantly related to negative coupling between the left superior occipital (cue-alpha) and the left dorsolateral superior frontal gyri (item-gamma) on permutation test, where the coupling was stronger in R than NR. In good memory performers (R-hits minus false alarm), the coupling was stronger in R than NR between the right posterior cingulate (cue-alpha) and the left fusiform gyri (item-gamma). Gating of memory encoding was dictated by inter-regional negative alpha-gamma coupling. Our graph filtration over MEG network revealed these inter-regional time-delayed cross-frequency connectivity serve gating of memory encoding.

KW - Attention

KW - Network topology

U2 - 10.1038/srep41592

DO - 10.1038/srep41592

M3 - Article

VL - 7

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 41592

ER -