A computational investigation of strain concentration in the brain in response to a rapid temperature rise
Autor: | Amy M. Dagro, Justin Wilkerson |
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Rok vydání: | 2019 |
Předmět: |
Materials science
Strain (chemistry) Pulse (signal processing) Infrasound Biomedical Engineering Temperature Brain 030206 dentistry 02 engineering and technology Mechanics Brain tissue 021001 nanoscience & nanotechnology Biomaterials 03 medical and health sciences 0302 clinical medicine Mechanics of Materials Humans 0210 nano-technology Microwaves Brain Concussion |
Zdroj: | Journal of the mechanical behavior of biomedical materials. 115 |
ISSN: | 1878-0180 |
Popis: | Following the mysterious health attacks on U.S. diplomats in Cuba in 2016, the cause of concussion-like symptoms concurrent with strange noises heard by the diplomats remains undetermined. A wide range of possible causes of the sensations have been proposed: pulsed microwave exposure, infrasound acoustic devices, pesticides/neurotoxins, and even mass hysteria (psychogenic illness). Here, we numerically examine the pulsed microwave exposure hypothesis and the simulated mechanical response of brain tissue. A computational model is used to examine the influence of various spatially varying temperature gradients and pulse durations on the mechanical response of brain tissue. We show that a stress-focusing effect due to a rapid temperature increase may result in brain tissue strains larger than the initially applied thermal strains. |
Databáze: | OpenAIRE |
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