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Current Medical Imaging

Editor-in-Chief

ISSN (Print): 1573-4056
ISSN (Online): 1875-6603

Research Article

Differences in Connectivity Between the Anterior and Mediodorsal Nuclei of Thalamus in the Human Brain: Diffusion Tensor Tractography Study

Author(s): Sung Ho Jang, Dae Hee Kim and Hyeok Gyu Kwon*

Volume 14 , Issue 4 , 2018

Page: [646 - 650] Pages: 5

DOI: 10.2174/1573405613666170428155635

Price: $65

Abstract

Objectives: No study that compares the connectivity of the Anterior Nucleus (AN) and Mediodorsal Nucleus (MDN) has been reported yet. In the present study, we attempted to investigate differences in connectivity between the AN and MDN in the human brain, using probabilistic Diffusion Tensor Tractography (DTT).

Methods: Forty-one healthy subjects were recruited for this present study. For connectivity of the AN and MDN, a seed region of interest was placed on the AN and MDN according to the known anatomical location using probabilistic DTT. Connectivity was defined as the incidence of connection between the AN/MDN and each brain region.

Results: The AN showed high connectivity to the lateral prefrontal cortex (lPFC, 92.7%), ventromedial prefrontal cortex (vmPFC,91.5%), and orbitofrontal cortex (OFC,67.1%). The MDN showed high connectivity to the lPFC (86.6%), vmPFC (84.1%), primary motor cortex (M1, 73.2%), premotor cortex (PMC,72.0%), and OFC (53.7%). In comparison to the difference of connectivity, no difference in the lPFC, vmPFC, and OFC was observed between the AN and MDN.

Conclusion: We found that both the AN and MDN showed high connectivity to the PFC. In addition, degree of connectivity from the AN and MDN to the PFC was similar.

Keywords: Anterior nucleus of thalamus, mediodorsal nucleus of thalamus, prefrontal cortex, connectivity, diffusion tensor imaging, tractography.

Graphical Abstract

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