Differences in the viscoelastic features of white and grey matter in tension

Wei Zhang; Run-Run Zhang; Fan Wu; Liang-Liang Feng; Sheng-Bo Yu; Cheng-Wei Wu

doi:10.1016/j.jbiomech.2016.10.032

Differences in the viscoelastic features of white and grey matter in tension

J Biomech. 2016 Dec 8;49(16):3990-3995. doi: 10.1016/j.jbiomech.2016.10.032. Epub 2016 Oct 27.

Authors

Wei Zhang¹, Run-Run Zhang¹, Fan Wu¹, Liang-Liang Feng¹, Sheng-Bo Yu², Cheng-Wei Wu³

Affiliations

¹ State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China.
² Department of Anatomy, College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China.
³ State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China. Electronic address: [email protected].

PMID: 27855984
DOI: 10.1016/j.jbiomech.2016.10.032

Abstract

Owing to its higher stiffness, white matter can absorb more energy than grey matter at strain rates of 0.025, 0.15 and 0.25 /s in tension. The reverse trend was observed at low strain rate (0.005 /s) due to the enhanced interactions between biomolecules in white matter, which may originate from the presence of strong polar groups and the stronger hydrogen bonding, as evidenced by differential scanning calorimetry and Fourier transform infrared spectrometer spectra.

Keywords: Biomechanics; Brain tissue; Differential scanning calorimetry; Fourier transform infrared spectrometer spectra; Viscoelasticity.

MeSH terms

Animals
Calorimetry, Differential Scanning
Dogs
Elasticity
Gray Matter / physiology*
Hydrogen Bonding
Spectroscopy, Fourier Transform Infrared
Stress, Mechanical
Viscosity
White Matter / physiology*