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Related Experiment Video

Updated: Jun 2, 2026

DTI of the Visual Pathway - White Matter Tracts and Cerebral Lesions

DTI of the Visual Pathway - White Matter Tracts and Cerebral Lesions

Published on: August 26, 2014

Mammillotegmental tract in the human brain: diffusion tensor tractography study.

Hyeok Gyu Kwon¹, Ji Heon Hong, Sung Ho Jang

¹Department of Physical Therapy, Graduate School of Rehabilitation Science, Daegu University, Gyeongsan, Republic of Korea.

|May 4, 2011

Summary

This study successfully identified the mammillotegmental tract (MTT) in the human brain using diffusion tensor tractography (DTT). The findings provide crucial anatomical data for future research on the MTT in humans.

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Area of Science:

Neuroanatomy
Neuroimaging
Human Brain Mapping

Background:

The mammillotegmental tract (MTT) has been studied in animals, but its presence and characteristics in the human brain remained uninvestigated.
Previous research primarily focused on animal models for MTT identification.

Purpose of the Study:

To identify and characterize the mammillotegmental tract (MTT) in the living human brain.
To establish a baseline for quantitative analysis of the MTT in humans.

Main Methods:

Diffusion tensor tractography (DTT) was employed in 31 healthy volunteers.
A probabilistic tractography method utilizing a multi-fiber model was used to reconstruct the MTT.
Quantitative metrics including fractional anisotropy, mean diffusivity, and tract volume were measured.

Main Results:

The mammillotegmental tract (MTT) was successfully identified in all human subjects.
The MTT originates from the mammillary body, ascends to the bicommissural level, and terminates in the midbrain tegmentum.
No significant differences in fractional anisotropy, mean diffusivity, or tract volume were found between hemispheres or sexes.

Conclusions:

Diffusion tensor tractography (DTT) is an effective method for identifying the mammillotegmental tract (MTT) in the human brain.
The quantitative data and anatomical description of the MTT provide a foundation for future clinical and research applications.