Videos
As part of our mission, we are working to disseminate our research to as wide an audience as possible. To this end, we present our social media channels here. The sidebar to the right includes links to the channels as well a Twitter feed and a Newsletter subscription form.
Also, we have been posting on YouTube videos from our ongoing seminar series as well as from special symposia and other forums. You can explore our various playlists, or simply browse our latest videos, below.
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Victor Solo, PhD: Identifying Functional Brain Networks with Conditional Independence Graphs
Victor Solo, PhD
MGH/HST Martinos Center for Biomedical Imaging, Dept. Radiology, MGH
Harvard Medical School, Boston, MA
School of Electrical Engineering, UNSW, Sydney, Australia
Identifying Functional Brain Networks with Conditional Independence Graphs
June 1, 2023
Abstract: We discuss, in a straightforward way, some basic concepts required for the coherent construction of functional brain networks from (neuroimaging) data e.g. signals at each node of an anatomically parcellated network. The dominant approach involves correlation, and we expose its flaws. These are remedied by using partial correlation which leads to conditional independence graphs (developed in the statistics literature beginning in the 1970s) which in turn need sparsity methods to scale up to big networks. We then sketch the extension to autocorrelated signals (aka lagged correlation signals) which leads to frequency domain based functional network construction based on partial coherency and state space models. We illustrate some of the ideas with applications to real data. We have ground down the math to an absolute minimum.
Athinoula A. Martinos Center for Biomedical Imaging
https://www.martinos.org/
Follow @MGHMartinos on Facebook, Instagram + Twitter!

The Martinos Center Says Goodbye to Connectome 1.0
We bid adieu to this groundbreaking piece of technology, even as we look forward to the delivery of Connectome 2.0!

BrainMap: The role of monoamines in aging and Alzheimer's disease
Anne Berry, PhD, Brandeis University
The role of monoamines in aging and Alzheimer's disease.
BrainMap, May 17th, 2023
For more information about the BrainMap, visit
https://www.martinos.org/education/brainmap/
https://www.martinos.org/education/scienceontap/
https://www.martinos.org/education/whyhow/
https://wis.martinos.org/
Athinoula A. Martinos Center for Biomedical Imaging
https://www.martinos.org/
Follow @MGHMartinos on Facebook, Instagram + Twitter!

BrainMap: Using Resting State fMRI to look at everything but Neuronal Activation
Blaise Frederick, PhD, Harvard Medical School, McLean Hospital
Using Resting State fMRI to look at everything but Neuronal Activation
BrainMap, September 28th, 2022
For more information about the BrainMap, visit
https://www.martinos.org/education/brainmap/
https://www.martinos.org/education/scienceontap/
https://www.martinos.org/education/whyhow/
https://wis.martinos.org/
Athinoula A. Martinos Center for Biomedical Imaging
https://www.martinos.org/
Follow @MGHMartinos on Facebook, Instagram + Twitter!

BrainMap: Parkinson’s disease motor severity associated with synaptic density and dopamine ...
David Matuskey, MD, Yale University
Parkinson’s disease motor severity associated with synaptic density and dopamine transporter PET
BrainMap, October 12th, 2022
For more information about the BrainMap, visit
https://www.martinos.org/education/brainmap/
https://www.martinos.org/education/scienceontap/
https://www.martinos.org/education/whyhow/
https://wis.martinos.org/
Athinoula A. Martinos Center for Biomedical Imaging
https://www.martinos.org/
Follow @MGHMartinos on Facebook, Instagram + Twitter!

BrainMap: Imaging Cerebral Oxygen Metabolism
Hongyu An, PhD, Washington University in St. Louis
Imaging Cerebral Oxygen Metabolism
BrainMap, November 2nd, 2022
For more information about the BrainMap, visit
https://www.martinos.org/education/brainmap/
https://www.martinos.org/education/scienceontap/
https://www.martinos.org/education/whyhow/
https://wis.martinos.org/
Athinoula A. Martinos Center for Biomedical Imaging
https://www.martinos.org/
Follow @MGHMartinos on Facebook, Instagram + Twitter!
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View all recent videos here
Also, check out the latest videos from the Center’s several seminar series
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