15 Nov, 2018 (Thu)Time:
SpeakerDr. Joanes Grandjean
Singapore Bioimaging Consortium,
Agency for Science Technology and Research, Singapore
A comprehensive understanding of the architecture and function of the healthy and diseased brain, often referred to as the “connectome”, is arguably one of the biggest challenges in neuroscience. Whole-brain analysis of structure and function using neuroimaging tools provides valuable insight into information processing at the macroscopic level. Functional imaging has been extensively used to map the healthy and diseased human brain, to localize brain activity evoked by specific cognitive tasks or estimate large-scale brain networks during rest. Advances in high field magnets and radio-frequency coils now enable researchers to extend these studies to animal models, where brain circuits can be further dissected using precise circuit manipulation tools such as optogenetics. In this talk, I will detail the development and considerations for functional connectivity analysis in mice and its application in the field of affective disorder. Finally, I will expend on the application of optogenetic together with functional magnetic resonance imaging (ofMRI) to manipulate and visualize circuits in the living mouse. The relevance of ofMRI is accentuated as it remains to-date the only available method to visualize functional activity evoked with optogentics across the whole-brain non-invasively. These studies offer a strong translational perspective to investigate the molecular mechanisms behind MRI-based fingerprints of human brain disorders, or to partake in the drug development process.
Biography of the speaker:
Dr. Grandjean obtained his Master in Neuroscience and PhD in Biomedical Engineering from the ETH Zürich, where he pioneered mouse resting-state fMRI imaging. He joined the Singapore BioImaging Consortium (A*STAR) in 2016. Dr. Grandjean uses high-field rodent MRI techniques and other imaging modalities to study the dynamics of large-scale circuit organization involved in affective and neurodegenerative disorders and in circuits regulating energy homeostasis. Dr. Grandjean has been one of the first actors in the field of resting-state imaging in the mouse and has published on the topic of Alzheimer’s disease and depressive disorder. He is currently leading a consortium involving the major preclinical MRI labs to compare and improve and standardize functional imaging in rodents.
All are welcome!
OrganizerProf. E.X. Wu
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