Meeting Banner
Abstract #3475

Dynamic spectral modes of resting-state BOLD time courses in white matter

Muwei Li1, Yurui Gao1, Adam W Anderson1, Zhaohua Ding1, and John C Gore1
1Vanderbilt University Institute of Imaging Science, Nashville, TN, United States

Synopsis

We investigated voxel-wise spectrograms derived from the time-varying spectral patterns of BOLD signals in white matter. Finite-window spectra are non-stationary but may be categorized into five distinct modes that recur over time. Close scrutiny of the signal profiles reveals distinct spatial distributions of the occurrences and durations of these modes, and such distributions are highly consistent across individuals. In addition, two communities of white matter voxels may be identified according to a hierarchical arrangement of transitions among modes. Our findings reveal the non-stationary nature of BOLD spectral patterns, and provide a novel spatial-temporal-frequency characterization of resting-state signals in white matter.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.

Keywords