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  HiHi fMRI: A data-reordering method for measuring the hemodynamic response of the brain with high temporal resolution and high SNR

Nagy, Z., Hutton, C., David, G., Hinterholzer, N., Deichmann, R., Weiskopf, N., et al. (2022). HiHi fMRI: A data-reordering method for measuring the hemodynamic response of the brain with high temporal resolution and high SNR. Cerebral Cortex. doi:10.1093/cercor/bhac364.

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 Creators:
Nagy, Zoltan1, 2, Author
Hutton, Chloe2, Author
David, Gergely3, Author
Hinterholzer, Natalie4, Author
Deichmann, Ralf2, 5, Author
Weiskopf, Nikolaus2, 6, Author                 
Vannesjo, S. Johanna7, Author
Affiliations:
1Laboratory for Social and Neural Systems Research, Department of Economics, University of Zurich, Switzerland, ou_persistent22              
2Wellcome Centre for Human Neuroimaging, UCL Queen Square Institute of Neurology, University College London, United Kingdom, ou_persistent22              
3Balgrist Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland, ou_persistent22              
4Swiss Center for Musculoskeletal Imaging (SCMI), Balgrist University Hospital, Zurich, Switzerland, ou_persistent22              
5Brain Imaging Center (BIC), Goethe University, Frankfurt, Germany, ou_persistent22              
6Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_2205649              
7Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway, ou_persistent22              

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Free keywords: hHemodynamic response; SNR; fMRI; BOLD; Sampling rate
 Abstract: There is emerging evidence that sampling the blood-oxygen-level-dependent (BOLD) response with high temporal resolution opens up new avenues to study the in vivo functioning of the human brain with functional magnetic resonance imaging. Because the speed of sampling and the signal level are intrinsically connected in magnetic resonance imaging via the T1 relaxation time, optimization efforts usually must make a trade-off to increase the temporal sampling rate at the cost of the signal level. We present a method, which combines a sparse event-related stimulus paradigm with subsequent data reshuffling to achieve high temporal resolution while maintaining high signal levels (HiHi). The proof-of-principle is presented by separately measuring the single-voxel time course of the BOLD response in both the primary visual and primary motor cortices with 100-ms temporal resolution.

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Language(s): eng - English
 Dates: 2022-08-192022-05-202022-08-222022-09-28
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1093/cercor/bhac364
Other: online ahead of print
PMID: 36169574
 Degree: -

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Project name : -
Grant ID : 091593/Z/10/Z and 079866/Z/06/Z
Funding program : -
Funding organization : Wellcome Trust
Project name : -
Grant ID : 616905
Funding program : -
Funding organization : European Union

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Title: Cerebral Cortex
Source Genre: Journal
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Publ. Info: New York, NY : Oxford University Press
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 1047-3211
CoNE: https://pure.mpg.de/cone/journals/resource/954925592440