Functional connections within the brain can be revealed through functional magnetic resonance imaging (fMRI), which shows simultaneous activations of blood flow in the brain during response tests. However, fMRI specialists currently do not have a tool for visualizing the complex data that comes from fMRI scans. They work with correlation matrices that table what functional region connections exist, but they have no corresponding visualization.
FMReye is a graph network visualization tool that relies on a technique developed in computer science to support the process of interactive exploration. Using the “brushing” technique, the user can examine the same data from multiple perspectives, and multiple levels of abstraction at the same time.
The Web application loads a correlation matrix of fMRI data and demonstrates three levels of abstraction within a multi-view display. The first level is the exploratory view, which is a representative 3D rotatable model of the connections between functional regions. Anatomical landmarks provide the contextual clues for spatial orientation.
The second level is a view for intuiting meaningful data at a glance. The benefit of this view is to create the ability for sense-making. This view flattens networks onto a single plane, like the spokes on a bicycle hub, so just the interactions are summarized, and extraneous information is abstracted away.
The third level is a way to schematize data. It recognizes nodes according to their functional groupings. Each functional region gets plotted into an atlas of regional groups around a circle, and connections can be viewed according to their categorical relations.
Having the three views appear simultaneously lets users investigate one inquiry about the brain from multiple levels of abstraction. Since the tool is online, any interested individual can access the site and view previously uploaded data or post their own information.
This work was done by Scott Davidoff and Hillary Mushkin of Caltech; Margaret Hendrie of the Art Center College of Design; Abdelwahab Bourai of Carnegie Mellon; Sarah Churng of the University of Washington; and Conrad Egan of the University of Texas at Austin for NASA’s Jet Propulsion Laboratory.
This software is available for commercial licensing. Please contact Dan Broderick at
This Brief includes a Technical Support Package (TSP).
Visualization of fMRI Network Data
(reference NPO-49385) is currently available for download from the TSP library.
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Overview
The document is a Technical Support Package from NASA’s Jet Propulsion Laboratory (JPL) concerning the visualization of functional Magnetic Resonance Imaging (fMRI) network data, identified by the reference number NPO-49385. It is part of NASA Tech Briefs, which disseminate information about aerospace-related developments that have potential applications in various technological, scientific, or commercial fields.
The primary purpose of this Technical Support Package is to provide documentation and insights related to the visualization techniques used for fMRI data, which is crucial for understanding brain activity and connectivity. fMRI is a non-invasive imaging technique that measures and maps brain activity by detecting changes associated with blood flow. The visualization of this data is essential for researchers and clinicians to interpret complex neural networks and understand brain functions.
The document emphasizes the importance of compliance with U.S. export regulations, indicating that the information may contain proprietary data and is subject to export control laws. It encourages users to adhere to these regulations when utilizing the information provided.
For further assistance or inquiries regarding the research and technology discussed in the document, the package provides contact information for the Innovative Technology Assets Management at JPL. This includes a mailing address and an email contact (iaoffice@jpl.nasa.gov), allowing interested parties to seek additional information or clarification on the subject matter.
Additionally, the document includes a disclaimer stating that neither the United States Government nor any representatives acting on its behalf assume liability for the use of the information contained within. It also clarifies that any mention of trade names or manufacturers is for identification purposes only and does not imply official endorsement by NASA.
In summary, this Technical Support Package serves as a resource for understanding the visualization of fMRI network data, highlighting its significance in neuroscience and related fields, while also ensuring compliance with legal and proprietary guidelines. It reflects NASA's commitment to sharing technological advancements that can benefit a wider audience beyond aerospace applications.
