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Beyond the Low Frequency Fluctuations: Morning and Evening Differences in Human Brain
Human performance, alertness, and most biological functions express rhythmic fluctuations across a 24-h-period. This phenomenon is believed to originate from differences in both circadian and homeostatic sleep-wake regulatory processes. Interactions between these processes result in time-of-day modu...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6718916/ https://www.ncbi.nlm.nih.gov/pubmed/31507393 http://dx.doi.org/10.3389/fnhum.2019.00288 |
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author | Fafrowicz, Magdalena Bohaterewicz, Bartosz Ceglarek, Anna Cichocka, Monika Lewandowska, Koryna Sikora-Wachowicz, Barbara Oginska, Halszka Beres, Anna Olszewska, Justyna Marek, Tadeusz |
author_facet | Fafrowicz, Magdalena Bohaterewicz, Bartosz Ceglarek, Anna Cichocka, Monika Lewandowska, Koryna Sikora-Wachowicz, Barbara Oginska, Halszka Beres, Anna Olszewska, Justyna Marek, Tadeusz |
author_sort | Fafrowicz, Magdalena |
collection | PubMed |
description | Human performance, alertness, and most biological functions express rhythmic fluctuations across a 24-h-period. This phenomenon is believed to originate from differences in both circadian and homeostatic sleep-wake regulatory processes. Interactions between these processes result in time-of-day modulations of behavioral performance as well as brain activity patterns. Although the basic mechanism of the 24-h clock is conserved across evolution, there are interindividual differences in the timing of sleep-wake cycles, subjective alertness and functioning throughout the day. The study of circadian typology differences has increased during the last few years, especially research on extreme chronotypes, which provide a unique way to investigate the effects of sleep-wake regulation on cerebral mechanisms. Using functional magnetic resonance imaging (fMRI), we assessed the influence of chronotype and time-of-day on resting-state functional connectivity. Twenty-nine extreme morning- and 34 evening-type participants underwent two fMRI sessions: about 1 h after wake-up time (morning) and about 10 h after wake-up time (evening), scheduled according to their declared habitual sleep-wake pattern on a regular working day. Analysis of obtained neuroimaging data disclosed only an effect of time of day on resting-state functional connectivity; there were different patterns of functional connectivity between morning (MS) and evening (ES) sessions. The results of our study showed no differences between extreme morning-type and evening-type individuals. We demonstrate that circadian and homeostatic influences on the resting-state functional connectivity have a universal character, unaffected by circadian typology. |
format | Online Article Text |
id | pubmed-6718916 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-67189162019-09-10 Beyond the Low Frequency Fluctuations: Morning and Evening Differences in Human Brain Fafrowicz, Magdalena Bohaterewicz, Bartosz Ceglarek, Anna Cichocka, Monika Lewandowska, Koryna Sikora-Wachowicz, Barbara Oginska, Halszka Beres, Anna Olszewska, Justyna Marek, Tadeusz Front Hum Neurosci Human Neuroscience Human performance, alertness, and most biological functions express rhythmic fluctuations across a 24-h-period. This phenomenon is believed to originate from differences in both circadian and homeostatic sleep-wake regulatory processes. Interactions between these processes result in time-of-day modulations of behavioral performance as well as brain activity patterns. Although the basic mechanism of the 24-h clock is conserved across evolution, there are interindividual differences in the timing of sleep-wake cycles, subjective alertness and functioning throughout the day. The study of circadian typology differences has increased during the last few years, especially research on extreme chronotypes, which provide a unique way to investigate the effects of sleep-wake regulation on cerebral mechanisms. Using functional magnetic resonance imaging (fMRI), we assessed the influence of chronotype and time-of-day on resting-state functional connectivity. Twenty-nine extreme morning- and 34 evening-type participants underwent two fMRI sessions: about 1 h after wake-up time (morning) and about 10 h after wake-up time (evening), scheduled according to their declared habitual sleep-wake pattern on a regular working day. Analysis of obtained neuroimaging data disclosed only an effect of time of day on resting-state functional connectivity; there were different patterns of functional connectivity between morning (MS) and evening (ES) sessions. The results of our study showed no differences between extreme morning-type and evening-type individuals. We demonstrate that circadian and homeostatic influences on the resting-state functional connectivity have a universal character, unaffected by circadian typology. Frontiers Media S.A. 2019-08-27 /pmc/articles/PMC6718916/ /pubmed/31507393 http://dx.doi.org/10.3389/fnhum.2019.00288 Text en Copyright © 2019 Fafrowicz, Bohaterewicz, Ceglarek, Cichocka, Lewandowska, Sikora-Wachowicz, Oginska, Beres, Olszewska and Marek. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Human Neuroscience Fafrowicz, Magdalena Bohaterewicz, Bartosz Ceglarek, Anna Cichocka, Monika Lewandowska, Koryna Sikora-Wachowicz, Barbara Oginska, Halszka Beres, Anna Olszewska, Justyna Marek, Tadeusz Beyond the Low Frequency Fluctuations: Morning and Evening Differences in Human Brain |
title | Beyond the Low Frequency Fluctuations: Morning and Evening Differences in Human Brain |
title_full | Beyond the Low Frequency Fluctuations: Morning and Evening Differences in Human Brain |
title_fullStr | Beyond the Low Frequency Fluctuations: Morning and Evening Differences in Human Brain |
title_full_unstemmed | Beyond the Low Frequency Fluctuations: Morning and Evening Differences in Human Brain |
title_short | Beyond the Low Frequency Fluctuations: Morning and Evening Differences in Human Brain |
title_sort | beyond the low frequency fluctuations: morning and evening differences in human brain |
topic | Human Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6718916/ https://www.ncbi.nlm.nih.gov/pubmed/31507393 http://dx.doi.org/10.3389/fnhum.2019.00288 |
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