Task-dependent fractal patterns of information processing in working memory

2022
journal article
article
13
cris.lastimport.wos2024-04-10T03:03:10Z
dc.abstract.enWe applied detrended fluctuation analysis, power spectral density, and eigenanalysis of detrended cross-correlations to investigate fMRI data representing a diurnal variation of working memory in four visual tasks: two verbal and two nonverbal. We show that the degree of fractal scaling is regionally dependent on the engagement in cognitive tasks. A particularly apparent difference was found between memorisation in verbal and nonverbal tasks. Furthermore, the detrended cross-correlations between brain areas were predominantly indicative of differences between resting state and other tasks, between memorisation and retrieval, and between verbal and nonverbal tasks. The fractal and spectral analyses presented in our study are consistent with previous research related to visuospatial and verbal information processing, working memory (encoding and retrieval), and executive functions, but they were found to be more sensitive than Pearson correlations and showed the potential to obtain other subtler results. We conclude that regionally dependent cognitive task engagement can be distinguished based on the fractal characteristics of BOLD signals and their detrended cross-correlation structure.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki Teoretycznejpl
dc.affiliationWydział Zarządzania i Komunikacji Społecznej : Instytut Psychologii Stosowanejpl
dc.contributor.authorOchab, Jeremi - 122224 pl
dc.contributor.authorWątorek, Marcin - 431761 pl
dc.contributor.authorCeglarek, Anna - 235724 pl
dc.contributor.authorFąfrowicz, Magdalena - 127888 pl
dc.contributor.authorLewandowska, Koryna - 107898 pl
dc.contributor.authorMarek, Tadeusz - 102084 pl
dc.contributor.authorSikora-Wachowicz, Barbara - 107014 pl
dc.contributor.authorOświęcimka, Paweł - 429732 pl
dc.date.accessioned2022-11-07T13:11:47Z
dc.date.available2022-11-07T13:11:47Z
dc.date.issued2022pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.versionostateczna wersja wydawcy
dc.description.volume12pl
dc.identifier.articleid17866pl
dc.identifier.doi10.1038/s41598-022-21375-1pl
dc.identifier.eissn2045-2322pl
dc.identifier.urihttps://ruj.uj.edu.pl/xmlui/handle/item/303330
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa*
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcode.pl*
dc.share.typeotwarte czasopismo
dc.subtypeArticlepl
dc.titleTask-dependent fractal patterns of information processing in working memorypl
dc.title.journalScientific Reportspl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-10T03:03:10Z
dc.abstract.enpl
We applied detrended fluctuation analysis, power spectral density, and eigenanalysis of detrended cross-correlations to investigate fMRI data representing a diurnal variation of working memory in four visual tasks: two verbal and two nonverbal. We show that the degree of fractal scaling is regionally dependent on the engagement in cognitive tasks. A particularly apparent difference was found between memorisation in verbal and nonverbal tasks. Furthermore, the detrended cross-correlations between brain areas were predominantly indicative of differences between resting state and other tasks, between memorisation and retrieval, and between verbal and nonverbal tasks. The fractal and spectral analyses presented in our study are consistent with previous research related to visuospatial and verbal information processing, working memory (encoding and retrieval), and executive functions, but they were found to be more sensitive than Pearson correlations and showed the potential to obtain other subtler results. We conclude that regionally dependent cognitive task engagement can be distinguished based on the fractal characteristics of BOLD signals and their detrended cross-correlation structure.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki Teoretycznej
dc.affiliationpl
Wydział Zarządzania i Komunikacji Społecznej : Instytut Psychologii Stosowanej
dc.contributor.authorpl
Ochab, Jeremi - 122224
dc.contributor.authorpl
Wątorek, Marcin - 431761
dc.contributor.authorpl
Ceglarek, Anna - 235724
dc.contributor.authorpl
Fąfrowicz, Magdalena - 127888
dc.contributor.authorpl
Lewandowska, Koryna - 107898
dc.contributor.authorpl
Marek, Tadeusz - 102084
dc.contributor.authorpl
Sikora-Wachowicz, Barbara - 107014
dc.contributor.authorpl
Oświęcimka, Paweł - 429732
dc.date.accessioned
2022-11-07T13:11:47Z
dc.date.available
2022-11-07T13:11:47Z
dc.date.issuedpl
2022
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
12
dc.identifier.articleidpl
17866
dc.identifier.doipl
10.1038/s41598-022-21375-1
dc.identifier.eissnpl
2045-2322
dc.identifier.uri
https://ruj.uj.edu.pl/xmlui/handle/item/303330
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licence
CC-BY
dc.rights.uri*
http://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subtypepl
Article
dc.titlepl
Task-dependent fractal patterns of information processing in working memory
dc.title.journalpl
Scientific Reports
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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