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Musculoskeletal, Neural, and Ocular Physiology Commons™
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Articles 1 - 2 of 2
Full-Text Articles in Musculoskeletal, Neural, and Ocular Physiology
When Red Lights Look Yellow, Joanne M. Wood, David A. Atchison, Alex Chaparro
When Red Lights Look Yellow, Joanne M. Wood, David A. Atchison, Alex Chaparro
Publications
Purpose. Red signals are typically used to signify danger. This study was conducted to investigate a situation identified by train drivers in which red signals appear yellow when viewed at long distances (∼900 m) through progressive-addition lenses.
Methods. A laboratory study was conducted to investigate the effects of defocus, target size, ambient illumination, and surround characteristics on the extent of the color misperception of train signals by nine visually normal participants. The data from the laboratory study were validated in a field study by measuring the amounts of defocus and the distances at which the misperception of the color of …
A Virtual Model Of The Human Cervical Spine For Physics-Based Simulation And Applications, Hyung Soo Ahn
A Virtual Model Of The Human Cervical Spine For Physics-Based Simulation And Applications, Hyung Soo Ahn
Theses and Dissertations (ETD)
Utilizing recent advances in computer technology, Our Biomechanics Laboratory have made an effort to integrate computer animation and engineering analysis software into biomedical research, specifically towards simulation and animation of in vitro experimentation of the human cervical spine in the virtual world. The objectives of this study were to develop a virtual model of the human cervical spine for physics-based simulation and to apply the virtual model to studies of different surgical procedures and instrumentation.
A process for creating an accurate virtual model of the human cervical spine was developed. The model consisted of seven vertebrae (C2-T1) connected with soft …