Vanderbilt University
Institute of Imaging Science
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Friday
27
October
2017
1:00pm
Catie Chang, PhD
Advanced MRI, NIH
Vigilance fluctuations and fMRI signal dynamics   (more ...)
Vigilance fluctuations and fMRI signal dynamics   (hide ...)

Changes in vigilance (brain arousal) are associated with prominent changes in neuronal activity, behavior, and physiology. However, these state changes are not typically monitored during fMRI, and their impact on fMRI measures of brain activity and network connectivity is not fully understood. Here, we integrate multi-modal neuroimaging and pattern analysis to develop an approach for tracking vigilance levels from fMRI data alone. In addition, we investigate the contribution of physiological processes (indexed by respiration and cardiac activity) to fMRI signals during changes in vigilance. Finally, we combine whole-brain fMRI with transient pharmacological inactivation in the macaque to examine how cortical fMRI signals linked with vigilance are shaped by specific nuclei in the basal forebrain. These findings suggest that characterizing fMRI dynamics linked with internal state changes can improve the sensitivity and extraction of biomarkers from fMRI
Friday
03
November
2017
1:00pm
Shane Hutson, PhD
Professor, Chair of Physics
Vanderbilt University
Tuesday
07
November
2017
4:00pm
Steve Townsend, PhD
Assistant Professor, Dept of Chemistry
Vanderbilt University
Human milk oligosaccharides as a defense against infectious diseases
Friday
10
November
2017
1:00pm
Zhaohua Ding, PhD
Associate Professor, VUIIS
TBA
Friday
17
November
2017
1:00pm
Eric Skaar, PhD, MPH
Ernest W. Goodpasture Professor of Pathology, VU
TBA
Friday
24
November
2017
Friday
01
December
2017
1:00pm
Richard Dortch, PhD
Research Assistant Professor, VUIIS
TBA
Friday
08
December
2017
1:00pm
Daniel Topgaard, Ph.D.
Professor, Lund University
TBA
Tuesday
19
December
2017
4:00pm
Delphine Chen, MD
Associate Professor, Dept of Radiology
Novel PET approaches for imaging lung inflammation
Thursday
18
January
2018
1:00pm
Yi Wang, Ph.D.
Professor, Cornell University
TBA