Khamnei Saeed, Sadat-Ebrahimi Seyyed-Reza, Salarilak Shaker, Savadi Oskoee Siavash, Houshyar Yousef, Shakouri Seyed Kazem, Salekzamani Yaghoub, Zamanlu Masumeh
Department of Physiology, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
Neurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran.
Bioimpacts. 2019;9(3):189-193. doi: 10.15171/bi.2019.23. Epub 2019 Apr 15.
Humans manifest a behavioral inclination towards more utility of one side of the body, in relation with the dominant hemisphere of the brain. The current investigation assessed handedness together with chewing preference which have not been evaluated in various food textures before. Nineteen young and healthy volunteers chewed hard (walnut) and soft (cake) foods, during surface electromyography recording from masseter muscles. The side of the first and all chews in the two food types were determined and compared with the side of the dominant hand. Results indicated the two lateralities in the same side considerably (60%-70%), implying the solidarity in the control of the dominant hemisphere of the brain. The unilaterality was more prominent in the assessment of all chews in hard food, with higher statistical agreement and correlation. Thereupon masticatory preference is found with probable origins in the dominant hemisphere of the brain.
与大脑优势半球相关，人类表现出对身体一侧更多功能使用的行为倾向。当前的研究评估了利手以及咀嚼偏好，而此前尚未在各种食物质地中对这些进行评估。19名年轻健康的志愿者在咬肌表面肌电图记录期间咀嚼硬（核桃）和软（蛋糕）食物。确定了两种食物类型中首次咀嚼及所有咀嚼的一侧，并与优势手的一侧进行比较。结果表明，同一侧的两种偏侧性相当显著（60%-70%），这意味着大脑优势半球控制方面的一致性。在硬食物所有咀嚼的评估中，单侧性更为突出，具有更高的统计学一致性和相关性。因此，发现咀嚼偏好可能起源于大脑优势半球。
