Laminar-specific functional connectivity mapping with multi-slice line-scanning fMRI.
Laminar-specific functional connectivity mapping with multi-slice line-scanning fMRI.
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DOI:
10.1093/cercor/bhab497
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发表时间:
2022-10-08
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影响因子:
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Despite extensive studies detecting laminar functional magnetic resonance imaging (fMRI) signals to illustrate the canonical microcircuit, the spatiotemporal characteristics of laminar-specific information flow across cortical regions remain to be fully investigated in both evoked and resting conditions at different brain states. Here, we developed a multislice line-scanning fMRI (MS-LS) method to detect laminar fMRI signals in adjacent cortical regions with high spatial (50 μm) and temporal resolution (100 ms) in anesthetized rats. Across different trials, we detected either laminar-specific positive or negative blood-oxygen-level-dependent (BOLD) responses in the surrounding cortical region adjacent to the most activated cortex under the evoked condition. Specifically, in contrast to typical Layer (L) 4 correlation across different regions due to the thalamocortical projections for trials with positive BOLD, a strong correlation pattern specific in L2/3 was detected for trials with negative BOLD in adjacent regions, which indicated brain state-dependent laminar-fMRI responses based on corticocortical interaction. Also, in resting-state (rs-) fMRI study, robust lag time differences in L2/3, 4, and 5 across multiple cortices represented the low-frequency rs-fMRI signal propagation from caudal to rostral slices. In summary, our study provided a unique laminar fMRI mapping scheme to better characterize trial-specific intra- and inter-laminar functional connectivity in evoked and resting-state MS-LS.
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DOI:
10.3389/fnene.2010.00008
发表时间:
2010
期刊:
Frontiers in neuroenergetics
影响因子:
--
作者:
Buxton RB
通讯作者:
Buxton RB
影响因子:
3.3
作者:
BANDETTINI, PA;JESMANOWICZ, A;HYDE, JS
通讯作者:
HYDE, JS
DOI:
10.1098/rstb.2005.1634
发表时间:
2005-05-29
影响因子:
6.3
作者:
Beckmann, CF;DeLuca, M;Smith, SM
通讯作者:
Smith, SM
影响因子:
5.3
作者:
Bopp, Rita;Holler-Rickauer, Simone;Schuhknecht, Gregor F. P.
通讯作者:
Schuhknecht, Gregor F. P.
DOI:
10.1126/science.1236425
发表时间:
2013-06-28
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Constantinople CM;Bruno RM
通讯作者:
Bruno RM