Meeting Banner
Abstract #0331

The Role of Inhibitory Thalamic Reticular Nucleus (TRN) in Brain-wide Resting-state Functional MRI (rsfMRI) Connectivity

Alex T L Leong1,2, Xunda Wang1,2, Yankai Zhang1,2, Linshan Xie1,2, and Ed X Wu1,2,3
1Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Hong Kong SAR, China, 2Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong SAR, China, 3School of Biomedical Sciences, The University of Hong Kong, Hong Kong SAR, China

Synopsis

Keywords: Task/Intervention Based fMRI, fMRI (resting state), fMRI(task based), functional connectivity, neuroscience

Motivation: Despite the enormous potential inherent in rsfMRI, the neural basis underlying rsfMRI connectivity remains unclear.

Goal(s): We aim to dissect the role of the TRN inhibitory neural population in rsfMRI connectivity given its prominent role in maintaining/regulating thalamo-cortical oscillations.

Approach: We examined brain-wide activity and rsfMRI connectivity changes after optogenetically manipulating neural activity in rodent TRN.

Results: We demonstrate that somatosensory-specific TRN inhibitory networks play a role in modulating rsfMRI connectivity of sensorimotor and default mode networks.

Impact: Present studies examining neural basis of rsfMRI have primarily focused on excitatory networks. Here, we investigated the role of a major inhibitory thalamic nucleus to advance our understanding of the contributions of inhibitory inputs in regulating brain-wide rsfMRI networks.

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