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@ARTICLE{Posse:27228,
author = {Posse, S. and Binkofski, F. and Schneider, F. and Gembris,
D. and Frings, W. and Habel, U. and Salloum, R. C. and
Mathiak, K. and Wiese, S. and Kiselev, V. and Graf, T. and
Elghahwagi, B. and Grosse-Ruyken, M. L. and Eickermann, T.},
title = {{A} new approach to measure single-event related brain
activity using real-time f{MRI} : feasibility of sensory,
motor, and higher congnitive tasks},
journal = {Human brain mapping},
volume = {12},
issn = {1065-9471},
address = {New York, NY},
publisher = {Wiley-Liss},
reportid = {PreJuSER-27228},
pages = {25 - 41},
year = {2001},
note = {Record converted from VDB: 12.11.2012},
abstract = {Real-time fMRI is a rapidly emerging methodology that
enables monitoring changes in brain activity during an
ongoing experiment, in this article we demonstrate the
feasibility of performing single-event sensory, motor, and
higher cognitive tasks in real-time on a clinical whole-body
scanner. This approach requires sensitivity optimized fMRI
methods: Using statistical parametric mapping we quantified
the spatial extent of BOLD contrast signal changes as a
function of voxel size and demonstrate that sacrificing
spatial resolution and readout bandwidth improves the
detection of signal changes in real time. Further increases
in BOLD contrast sensitivity were obtained by using
real-time multi-echo EPI. Real-time image analysis was
performed using our previously described Functional imaging
in REal time (FIRE) software package, which features
real-time motion compensation, sliding window correlation
analysis, and automatic reference vector optimization. This
new fMRI methodology was validated using single-block design
paradigms of standard visual, motor, and auditory tasks.
Further, we demonstrate the sensitivity of this method for
online detection of higher cognitive functions during a
language task using single-block design paradigms. Finally,
we used single-event fMRI to characterize the variability of
the hemodynamic impulse response in primary and
supplementary motor cortex in consecutive trials using
single movements. Real-time fMRI can improve reliability of
clinical and research studies and offers new opportunities
for studying higher cognitive functions. (C) 2001
Wiley-Liss, Inc.},
keywords = {J (WoSType)},
cin = {ZAM / IME},
ddc = {610},
cid = {I:(DE-Juel1)VDB62 / I:(DE-Juel1)VDB54},
pnm = {Programmiermethoden und Software-Werkzeuge / Zerebrale
Repräsentation},
pid = {G:(DE-Juel1)FUEK106 / G:(DE-Juel1)FUEK90},
shelfmark = {Neurosciences / Neuroimaging / Radiology, Nuclear Medicine
$\&$ Medical Imaging},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000166179800003},
doi = {10.1002/1097-0193(200101)12:1<25::AID-HBM30>3.0.CO;2-H},
url = {https://juser.fz-juelich.de/record/27228},
}