J0206-4-2 Mechanical Effects of the Pillow and Cervical Vertebrae on Supine Position Using Photoelastic Method

Abstract

Sleep is indispensable to human acts. However, the sleep disturbance is one of the matters of social problem now. The topic concerning sleep came to be often taken up in media. And the attention of bedding has increased Especially, the pillow attracts a lot of attention. In this study, we paid attention to the pillow and cervica vertebrae. It aims to examine the dynamic influence that pillow exerts on spine position. The experiment uses the photoelastic method.As a result, the stress in the cervical vertebrae has been understood to concentrate on the top part and the bottom part.