Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI.

To provide the basis and reference to further insights into the neural activity of the human brain in a microgravity environment, we discuss the amplitude changes of low-frequency brain activity fluctuations using a simulated microgravity model. Twelve male participants between 24 and 31 years old r...
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Autor*in:	Yang Liao [verfasserIn] Jinsong Zhang [verfasserIn] Zhiping Huang [verfasserIn] Yibin Xi [verfasserIn] Qianru Zhang [verfasserIn] Tianli Zhu [verfasserIn] Xufeng Liu [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2012

Übergeordnetes Werk:	In: PLoS ONE - Public Library of Science (PLoS), 2007, 7(2012), 12, p e52558
Übergeordnetes Werk:	volume:7 ; year:2012 ; number:12, p e52558

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1371/journal.pone.0052558

Katalog-ID:	DOAJ061917788

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allfields	10.1371/journal.pone.0052558 doi (DE-627)DOAJ061917788 (DE-599)DOAJ1283cfba9c084b39a7bfbf3f9b7549c0 DE-627 ger DE-627 rakwb eng Yang Liao verfasserin aut Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI. 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier To provide the basis and reference to further insights into the neural activity of the human brain in a microgravity environment, we discuss the amplitude changes of low-frequency brain activity fluctuations using a simulated microgravity model. Twelve male participants between 24 and 31 years old received resting-state fMRI scans in both a normal condition and after 72 hours in a -6° head down tilt (HDT). A paired sample t-test was used to test the amplitude differences of low-frequency brain activity fluctuations between these two conditions. With 72 hours in a -6° HDT, the participants showed a decreased amplitude of low-frequency fluctuations in the left thalamus compared with the normal condition (a combined threshold of P<0.005 and a minimum cluster size of 351 mm(3) (13 voxels), which corresponded with the corrected threshold of P<0.05 determined by AlphaSim). Our findings indicate that a gravity change-induced redistribution of body fluid may disrupt the function of the left thalamus in the resting state, which may contribute to reduced motor control abilities and multiple executive functions in astronauts in a microgravity environment. Medicine R Science Q Jinsong Zhang verfasserin aut Zhiping Huang verfasserin aut Yibin Xi verfasserin aut Qianru Zhang verfasserin aut Tianli Zhu verfasserin aut Xufeng Liu verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 7(2012), 12, p e52558 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:7 year:2012 number:12, p e52558 https://doi.org/10.1371/journal.pone.0052558 kostenfrei https://doaj.org/article/1283cfba9c084b39a7bfbf3f9b7549c0 kostenfrei https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23285086/pdf/?tool=EBI kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2012 12, p e52558
spelling	10.1371/journal.pone.0052558 doi (DE-627)DOAJ061917788 (DE-599)DOAJ1283cfba9c084b39a7bfbf3f9b7549c0 DE-627 ger DE-627 rakwb eng Yang Liao verfasserin aut Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI. 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier To provide the basis and reference to further insights into the neural activity of the human brain in a microgravity environment, we discuss the amplitude changes of low-frequency brain activity fluctuations using a simulated microgravity model. Twelve male participants between 24 and 31 years old received resting-state fMRI scans in both a normal condition and after 72 hours in a -6° head down tilt (HDT). A paired sample t-test was used to test the amplitude differences of low-frequency brain activity fluctuations between these two conditions. With 72 hours in a -6° HDT, the participants showed a decreased amplitude of low-frequency fluctuations in the left thalamus compared with the normal condition (a combined threshold of P<0.005 and a minimum cluster size of 351 mm(3) (13 voxels), which corresponded with the corrected threshold of P<0.05 determined by AlphaSim). Our findings indicate that a gravity change-induced redistribution of body fluid may disrupt the function of the left thalamus in the resting state, which may contribute to reduced motor control abilities and multiple executive functions in astronauts in a microgravity environment. Medicine R Science Q Jinsong Zhang verfasserin aut Zhiping Huang verfasserin aut Yibin Xi verfasserin aut Qianru Zhang verfasserin aut Tianli Zhu verfasserin aut Xufeng Liu verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 7(2012), 12, p e52558 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:7 year:2012 number:12, p e52558 https://doi.org/10.1371/journal.pone.0052558 kostenfrei https://doaj.org/article/1283cfba9c084b39a7bfbf3f9b7549c0 kostenfrei https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23285086/pdf/?tool=EBI kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2012 12, p e52558
allfields_unstemmed	10.1371/journal.pone.0052558 doi (DE-627)DOAJ061917788 (DE-599)DOAJ1283cfba9c084b39a7bfbf3f9b7549c0 DE-627 ger DE-627 rakwb eng Yang Liao verfasserin aut Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI. 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier To provide the basis and reference to further insights into the neural activity of the human brain in a microgravity environment, we discuss the amplitude changes of low-frequency brain activity fluctuations using a simulated microgravity model. Twelve male participants between 24 and 31 years old received resting-state fMRI scans in both a normal condition and after 72 hours in a -6° head down tilt (HDT). A paired sample t-test was used to test the amplitude differences of low-frequency brain activity fluctuations between these two conditions. With 72 hours in a -6° HDT, the participants showed a decreased amplitude of low-frequency fluctuations in the left thalamus compared with the normal condition (a combined threshold of P<0.005 and a minimum cluster size of 351 mm(3) (13 voxels), which corresponded with the corrected threshold of P<0.05 determined by AlphaSim). Our findings indicate that a gravity change-induced redistribution of body fluid may disrupt the function of the left thalamus in the resting state, which may contribute to reduced motor control abilities and multiple executive functions in astronauts in a microgravity environment. Medicine R Science Q Jinsong Zhang verfasserin aut Zhiping Huang verfasserin aut Yibin Xi verfasserin aut Qianru Zhang verfasserin aut Tianli Zhu verfasserin aut Xufeng Liu verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 7(2012), 12, p e52558 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:7 year:2012 number:12, p e52558 https://doi.org/10.1371/journal.pone.0052558 kostenfrei https://doaj.org/article/1283cfba9c084b39a7bfbf3f9b7549c0 kostenfrei https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23285086/pdf/?tool=EBI kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2012 12, p e52558
allfieldsGer	10.1371/journal.pone.0052558 doi (DE-627)DOAJ061917788 (DE-599)DOAJ1283cfba9c084b39a7bfbf3f9b7549c0 DE-627 ger DE-627 rakwb eng Yang Liao verfasserin aut Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI. 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier To provide the basis and reference to further insights into the neural activity of the human brain in a microgravity environment, we discuss the amplitude changes of low-frequency brain activity fluctuations using a simulated microgravity model. Twelve male participants between 24 and 31 years old received resting-state fMRI scans in both a normal condition and after 72 hours in a -6° head down tilt (HDT). A paired sample t-test was used to test the amplitude differences of low-frequency brain activity fluctuations between these two conditions. With 72 hours in a -6° HDT, the participants showed a decreased amplitude of low-frequency fluctuations in the left thalamus compared with the normal condition (a combined threshold of P<0.005 and a minimum cluster size of 351 mm(3) (13 voxels), which corresponded with the corrected threshold of P<0.05 determined by AlphaSim). Our findings indicate that a gravity change-induced redistribution of body fluid may disrupt the function of the left thalamus in the resting state, which may contribute to reduced motor control abilities and multiple executive functions in astronauts in a microgravity environment. Medicine R Science Q Jinsong Zhang verfasserin aut Zhiping Huang verfasserin aut Yibin Xi verfasserin aut Qianru Zhang verfasserin aut Tianli Zhu verfasserin aut Xufeng Liu verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 7(2012), 12, p e52558 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:7 year:2012 number:12, p e52558 https://doi.org/10.1371/journal.pone.0052558 kostenfrei https://doaj.org/article/1283cfba9c084b39a7bfbf3f9b7549c0 kostenfrei https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23285086/pdf/?tool=EBI kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2012 12, p e52558
allfieldsSound	10.1371/journal.pone.0052558 doi (DE-627)DOAJ061917788 (DE-599)DOAJ1283cfba9c084b39a7bfbf3f9b7549c0 DE-627 ger DE-627 rakwb eng Yang Liao verfasserin aut Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI. 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier To provide the basis and reference to further insights into the neural activity of the human brain in a microgravity environment, we discuss the amplitude changes of low-frequency brain activity fluctuations using a simulated microgravity model. Twelve male participants between 24 and 31 years old received resting-state fMRI scans in both a normal condition and after 72 hours in a -6° head down tilt (HDT). A paired sample t-test was used to test the amplitude differences of low-frequency brain activity fluctuations between these two conditions. With 72 hours in a -6° HDT, the participants showed a decreased amplitude of low-frequency fluctuations in the left thalamus compared with the normal condition (a combined threshold of P<0.005 and a minimum cluster size of 351 mm(3) (13 voxels), which corresponded with the corrected threshold of P<0.05 determined by AlphaSim). Our findings indicate that a gravity change-induced redistribution of body fluid may disrupt the function of the left thalamus in the resting state, which may contribute to reduced motor control abilities and multiple executive functions in astronauts in a microgravity environment. Medicine R Science Q Jinsong Zhang verfasserin aut Zhiping Huang verfasserin aut Yibin Xi verfasserin aut Qianru Zhang verfasserin aut Tianli Zhu verfasserin aut Xufeng Liu verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 7(2012), 12, p e52558 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:7 year:2012 number:12, p e52558 https://doi.org/10.1371/journal.pone.0052558 kostenfrei https://doaj.org/article/1283cfba9c084b39a7bfbf3f9b7549c0 kostenfrei https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23285086/pdf/?tool=EBI kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2012 12, p e52558
language	English
source	In PLoS ONE 7(2012), 12, p e52558 volume:7 year:2012 number:12, p e52558
sourceStr	In PLoS ONE 7(2012), 12, p e52558 volume:7 year:2012 number:12, p e52558
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Medicine R Science Q
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container_title	PLoS ONE
authorswithroles_txt_mv	Yang Liao @@aut@@ Jinsong Zhang @@aut@@ Zhiping Huang @@aut@@ Yibin Xi @@aut@@ Qianru Zhang @@aut@@ Tianli Zhu @@aut@@ Xufeng Liu @@aut@@
publishDateDaySort_date	2012-01-01T00:00:00Z
hierarchy_top_id	523574592
id	DOAJ061917788
language_de	englisch
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author	Yang Liao
spellingShingle	Yang Liao misc Medicine misc R misc Science misc Q Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI.
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topic_title	Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI
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title	Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI.
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title_full	Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI
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author_browse	Yang Liao Jinsong Zhang Zhiping Huang Yibin Xi Qianru Zhang Tianli Zhu Xufeng Liu
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author-letter	Yang Liao
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title_sort	altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fmri
title_auth	Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI.
abstract	To provide the basis and reference to further insights into the neural activity of the human brain in a microgravity environment, we discuss the amplitude changes of low-frequency brain activity fluctuations using a simulated microgravity model. Twelve male participants between 24 and 31 years old received resting-state fMRI scans in both a normal condition and after 72 hours in a -6° head down tilt (HDT). A paired sample t-test was used to test the amplitude differences of low-frequency brain activity fluctuations between these two conditions. With 72 hours in a -6° HDT, the participants showed a decreased amplitude of low-frequency fluctuations in the left thalamus compared with the normal condition (a combined threshold of P<0.005 and a minimum cluster size of 351 mm(3) (13 voxels), which corresponded with the corrected threshold of P<0.05 determined by AlphaSim). Our findings indicate that a gravity change-induced redistribution of body fluid may disrupt the function of the left thalamus in the resting state, which may contribute to reduced motor control abilities and multiple executive functions in astronauts in a microgravity environment.
abstractGer	To provide the basis and reference to further insights into the neural activity of the human brain in a microgravity environment, we discuss the amplitude changes of low-frequency brain activity fluctuations using a simulated microgravity model. Twelve male participants between 24 and 31 years old received resting-state fMRI scans in both a normal condition and after 72 hours in a -6° head down tilt (HDT). A paired sample t-test was used to test the amplitude differences of low-frequency brain activity fluctuations between these two conditions. With 72 hours in a -6° HDT, the participants showed a decreased amplitude of low-frequency fluctuations in the left thalamus compared with the normal condition (a combined threshold of P<0.005 and a minimum cluster size of 351 mm(3) (13 voxels), which corresponded with the corrected threshold of P<0.05 determined by AlphaSim). Our findings indicate that a gravity change-induced redistribution of body fluid may disrupt the function of the left thalamus in the resting state, which may contribute to reduced motor control abilities and multiple executive functions in astronauts in a microgravity environment.
abstract_unstemmed	To provide the basis and reference to further insights into the neural activity of the human brain in a microgravity environment, we discuss the amplitude changes of low-frequency brain activity fluctuations using a simulated microgravity model. Twelve male participants between 24 and 31 years old received resting-state fMRI scans in both a normal condition and after 72 hours in a -6° head down tilt (HDT). A paired sample t-test was used to test the amplitude differences of low-frequency brain activity fluctuations between these two conditions. With 72 hours in a -6° HDT, the participants showed a decreased amplitude of low-frequency fluctuations in the left thalamus compared with the normal condition (a combined threshold of P<0.005 and a minimum cluster size of 351 mm(3) (13 voxels), which corresponded with the corrected threshold of P<0.05 determined by AlphaSim). Our findings indicate that a gravity change-induced redistribution of body fluid may disrupt the function of the left thalamus in the resting state, which may contribute to reduced motor control abilities and multiple executive functions in astronauts in a microgravity environment.
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title_short	Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI.
url	https://doi.org/10.1371/journal.pone.0052558 https://doaj.org/article/1283cfba9c084b39a7bfbf3f9b7549c0 https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23285086/pdf/?tool=EBI https://doaj.org/toc/1932-6203
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Altered baseline brain activity with 72 h of simulated microgravity--initial evidence from resting-state fMRI.

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