Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany.
Department of Otorhinolaryngology, the Affiliated Hospital Xuzhou Medical University, Xuzhou, China.
ORL J Otorhinolaryngol Relat Spec. 2020;82(3):115-120. doi: 10.1159/000507787. Epub 2020 May 14.
Structural and functional asymmetry is frequent in biological systems. The aim of the present study was to examine whether there is a relation between handedness and the depth of the olfactory sulcus (OS) and reinvestigate whether there is a lateralization of OS depth.
Forty-two healthy volunteers (mean age 24.1 years; 23 right-handed and 19 left-handed) participated. The subjects' brains were scanned using magnetic resonance imaging to assess OS depth. Normal olfactory function was ascertained using the Sniffin' Sticks odor identification test.
There was no significant difference in OS depth between right- and left-handed participants (right-handed mean: right OS depth = 11.3 mm, left OS = 10.6 mm; left-handed mean: right OS = 11.3 mm, left OS = 11.0 mm). Across all subjects, OS depth was significantly larger on the right side compared to the left.
Handedness has no major influence on OS depth. The present study confirmed that the right OS is deeper compared to the left OS, possibly indicating a right-sided lateralization of the olfactory system.
The depth of the right OS is larger than that of the left OS. No major effect of handedness was observed.
结构和功能的不对称在生物系统中很常见。本研究旨在探讨利手与嗅沟（OS）深度之间是否存在关系，并重新研究 OS 深度是否存在偏侧化。
42 名健康志愿者（平均年龄 24.1 岁；23 名右利手，19 名左利手）参与了本研究。使用磁共振成像对受试者的大脑进行扫描，以评估 OS 深度。使用嗅敏度测试（Sniffin' Sticks odor identification test）确定正常的嗅觉功能。
右利手和左利手参与者的 OS 深度无显著差异（右利手平均：右侧 OS 深度=11.3mm，左侧 OS=10.6mm；左利手平均：右侧 OS=11.3mm，左侧 OS=11.0mm）。所有受试者中，右侧 OS 深度明显大于左侧。
利手对 OS 深度没有重大影响。本研究证实，右侧 OS 比左侧 OS 更深，可能表明嗅觉系统存在右侧偏侧化。
右侧 OS 的深度大于左侧 OS。未观察到手性的主要影响。
