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Combining task-evoked and spontaneous activity to improve pre-operative brain mapping with fMRI
2016
NeuroImage
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Collectively, our results suggest that modifying the processing of fMRI data to incorporate both task-based and spontaneous activity significantly improves functional localization in pre-operative patients ...
Recently, pre-operative fMRI mapping based on correlations in spontaneous brain activity has been demonstrated, however this approach has its own limitations and has not seen widespread clinical use. ...
HL, DW, and MDF are listed as inventors on submitted patents on mapping functional brain organization using fMRI. ...
doi:10.1016/j.neuroimage.2015.09.030
pmid:26408860
pmcid:PMC4831649
fatcat:jhzs7log5vcxbl37wh6m76rupa
Resting-state Spontaneous Fluctuations in Brain Activity
2009
Academic Radiology
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Task evoked functional MRI (fMRI) has been used successfully in the study of brain function and clinically for pre-surgical localization of eloquent brain regions prior to the performance of brain surgery ...
This method does not require any task performance and measures the spontaneous low frequency (<0.1 Hz) fluctuations of the fMRI signal over time. ...
Its contents are solely the responsibility of the authors and do not necessarily represent the official view of NCRR or NIH. We wish to thank Dr. Raichle and Dr. ...
doi:10.1016/j.acra.2009.02.001
pmid:19345899
pmcid:PMC2818666
fatcat:twnsx3zjtnfczooz7lkotciulm
PREOPERATIVE SENSORIMOTOR MAPPING IN BRAIN TUMOR PATIENTS USING SPONTANEOUS FLUCTUATIONS IN NEURONAL ACTIVITY IMAGED WITH FUNCTIONAL MAGNETIC RESONANCE IMAGING
2009
Operative Neurosurgery
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Resting state functional mapping in patients showed localization to sensorimotor areas consistent with cortical stimulation mapping (CSM) and in all cases performed as well or better than task-based fMRI ...
This method compares well with "gold standard" CSM and offers several advantages in comparison to conventional motor mapping fMRI. ...
Applying these principals to pre-operative mapping, one could acquire task data with minimal acquisition time then process the data in two ways: once to obtain task-activation maps and seed regions and ...
doi:10.1227/01.neu.0000350868.95634.ca
pmid:19934999
pmcid:PMC2796594
fatcat:pdcs5tsogfg63f26oyl5pj2k6y
Role of Ongoing, Intrinsic Activity of Neuronal Populations for Quantitative Neuroimaging of Functional Magnetic Resonance Imaging–Based Networks
2011
Brain Connectivity
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Although neuroimaging with fMRI-conducted with or without tasks-is actively discovering new brain networks, current fMRI data analysis schemes disregard the importance of the total neuronal activity in ...
In task fMRI experiments, the baseline is differenced away to disclose areas of small evoked changes in the blood oxygenation level-dependent (BOLD) signal. ...
This work was supported by National Institutes of Health Grants (R01 MH-067528 to F.H., P30 NS-052519 to F.H., R01 NS-049307 to H.B., R01 NS-066974 to H.B., and R01 AG-034953 to D.L.R.). ...
doi:10.1089/brain.2011.0032
pmid:22433047
pmcid:PMC3621320
fatcat:pqsaykiki5bc7bnsuczwsg2nhq
Spontaneous activity forms a foundation for odor-evoked activation maps in the rat olfactory bulb
2018
NeuroImage
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to task-evoked activations. ...
We conducted multi-modal neuroimaging scans of the rat olfactory bulb, both with and without odor, to examine interaction between spontaneous and evoked activities. ...
Acknowledgments Authors thank Bei Wang for her help in animal preparation for fMRI. G. J. ...
doi:10.1016/j.neuroimage.2018.01.051
pmid:29374582
pmcid:PMC5910178
fatcat:2dj2tlicuzfqvcie52fns32t7i
Resting-State Blood Oxygen Level-Dependent Functional MRI: A Paradigm Shift in Preoperative Brain Mapping
2015
Stereotactic and Functional Neurosurgery
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Task-based fMRI depends on the patient's ability to comply with the task paradigm, which often is impaired in the setting of a brain tumor. ...
Compared with task-related fMRI, rs-fMRI provides more comprehensive information on the functional architecture of the brain and is applicable in settings where task-related fMRI may provide inadequate ...
The funder had no role in the study design, data collection and analysis, decision to publish, or preparation of the paper.
Disclosure Statement The authors have no relevant disclosures to report. ...
doi:10.1159/000442424
pmid:26784290
fatcat:v4aisfh2sfaqlbrmzmlao7frzm
The alteration of spontaneous low frequency oscillations caused by acute electromagnetic fields exposure
2014
Clinical Neurophysiology
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We measured the amplitude of low frequency fluctuation (ALFF) and fractional ALFF (fALFF) to characterize the spontaneous brain activity. ...
Term Evolution (LTE) radiofrequency electromagnetic field (RF-EMF) exposure influence on spontaneous brain activity. ...
Acknowledgements We would like to thank all the participants enrolled in this study. ...
doi:10.1016/j.clinph.2013.07.018
pmid:24012322
fatcat:zs2lyd7ws5hlnkgcvshbbnfkbe
Clinical applications of resting state functional connectivity
2010
Frontiers in Systems Neuroscience
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FIguRe 2 | Signal to noise features of spontaneous and task evoked activity. ...
Relating resting state
pre-operatIve MappIng and targetIng InterventIon The area in which traditional task-based fMRI has shown the greatest promise for clinical translation is in pre-operative functional ...
doi:10.3389/fnsys.2010.00019
pmid:20592951
pmcid:PMC2893721
fatcat:gwizpg7ifbh23k6l5ir5cp4oai
Making the most of fMRI at 7 T by suppressing spontaneous signal fluctuations
2009
NeuroImage
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These results suggest that modeling of spontaneous fMRI signal fluctuations as multiple independent sources can dramatically improve detection of evoked activity, and fully exploit the potential sensitivity ...
signals (e.g. spontaneous fluctuations) and separate these from evoked activity in the target region. ...
If such networks persist during activation, the strategy proposed here could hence be applied to improve the detection of evoked responses in other brain areas. ...
doi:10.1016/j.neuroimage.2008.08.037
pmid:18835582
pmcid:PMC2784593
fatcat:qzwmcalncnazvjackx3cq6lsly
A brief history of the resting state: The Washington University perspective
2012
NeuroImage
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We present a history of the concepts and developments that have led us to focus on the resting state as an object of study. ...
We then discuss resting state research performed in our laboratory since 2005 with an emphasis on papers of particular interest. ...
We have seen suggestions of such reorganization in the context of pre-surgical RSN mapping in patients with brain tumors . ...
doi:10.1016/j.neuroimage.2012.01.044
pmid:22266172
pmcid:PMC3342417
fatcat:4chvkrer6jgrtkwkys4ntmng2i
Language Functional Magnetic Resonance Imaging in Preoperative Assessment of Language Areas: Correlation with Direct Cortical Stimulation
2003
Neurosurgery
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Complete agreement between pre-and postoperative fMRI studies and direct brain mapping results was observed for only three of eight patients. ...
The fMRI data were then registered in a frameless stereotactic neuronavigational device and correlated with direct brain mapping results. ...
Marc Vironneau for assistance with brain mapping and Dr. ...
doi:10.1227/01.neu.0000064803.05077.40
pmid:12762879
fatcat:ghukhbzxlnd5tbx22x7hnfhhfy
Electrophysiological Imaging of Brain Activity and Connectivity—Challenges and Opportunities
2011
IEEE Transactions on Biomedical Engineering
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Of importance is to map the spatially distributed and temporally dynamic neural activity with high resolution in space and time domains. ...
The spatiotemporal mapping of brain activity and, more recently, connectivity is now an essential tool for the investigation of the brain, in terms of functional segregation and coordination. ...
Acknowledgments This work was supported in part by NIH RO1 EB007920, RO1 EB006433, T32 EB008389, and NSF CBET-0933067. ...
doi:10.1109/tbme.2011.2139210
pmid:21478071
pmcid:PMC3241716
fatcat:ezpmlev6e5bolcnu6bpytetsqe
What is Magnetoencephalography and why it is Relevant to Neurosurgery?
[chapter]
2005
Advances and technical standards in neurosurgery
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This performance may improve with more powerful MRI apparatuses. What is the correspondence between fMRI signals and neuronal activity evoked by peripheral stimulation in the somatosensory cortex? ...
However, MEG and fMRI localization results showed significantly di¤erent activation cortical sites for motor and sensory tasks with a distance of 10 and 15 mm, respectively. ...
doi:10.1007/3-211-27208-9_2
fatcat:sn2pgxuprvdyjn75ndt4hdevbq
Using fMRI to Examine Central Auditory Plasticity
[chapter]
2014
Advanced Brain Neuroimaging Topics in Health and Disease - Methods and Applications
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Finally, the need for averaging data across individuals is reduced, further improving the accuracy with which activations can be mapped onto subjectspecific brain structure (e.g. . ...
The noise not only activates parts of the auditory brain, but also interacts with the patterns of activity evoked by experimental stimuli. ...
doi:10.5772/58262
fatcat:tbqsim27drgslj4wfhl7xrztza
The physiological origin of task-evoked systemic artefacts in functional near infrared spectroscopy
2012
NeuroImage
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Therefore a careful separation of fNIRS signals originating from activated brain and from scalp is a necessary precondition for unbiased fNIRS brain activation maps. © 2012 Elsevier Inc. ...
Based on temporal correlation of fNIRS and fMRI signals with peripheral physiological measurements we conclude that the physiological origin of the systemic artefact is a task-evoked sympathetic arterial ...
The authors are thankful to Prof. Peter Drummond (Murdoch University, Perth, Australia) and Prof. ...
doi:10.1016/j.neuroimage.2012.02.074
pmid:22426347
pmcid:PMC3348501
fatcat:x33a5adzbbbrzhsl4uu2igvbpi
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