Interdisciplinary Center Smell and Taste, Department of Otorhinolaryngology, Medical Faculty Carl Gustav Carus, Dresden, Germany.
Department of Otorhinolaryngology, The Affiliated Hospital Xu Zhou Medical University, China.
Acta Otolaryngol. 2020 Jun;140(6):509-513. doi: 10.1080/00016489.2020.1730006. Epub 2020 Mar 3.
Odor identification is related to odor naming, which is more of a verbal than an olfactory sensory task. Linguistic functions in right-handers are typically lateralized to the left hemisphere of the brain and the olfactory processing happens predominantly ipsilaterally to the stimulated side. Re-investigate side-related effect in healthy right-handed people with a larger sample size and investigate the influence of age or gender on the odor identification lateralization effect. The 'Sniffin' Sticks' odor identification test on a single nostril (either left or right side) was conducted in four hundred and thirty-eight right-handed participants. Among those one hundred and ninety-nine participants were tested on the left-side nostril and two hundred and thirty-nine on the right-side nostril. They were divided into two groups based on the age (18 years) or sex, in the older group (18 years) and the younger group (18 years) we had subgroups based on the sex. In adults (age >18 years), the left-nostril odor identification score was significantly higher than the right-nostril odor identification score ( = 2.21, = .03), in the male participants, the left-nostril odor identification score was also significantly higher than the right-nostril odor identification score ( = 2.01, = 0.04). The present study found that the in adult group (age >18 years), the odor identification performed better on the left-side nostril than the right-side nostril compared to the younger group (age ≤18 years); The males performed better on the left-side nostril than the right-side nostril compared to the females. In the adults (age >18 years) group, the males subgroup played a more important role on the lateralization of odor identification. Gender and age seem to have a large influence on the lateralization of odor identification.
嗅觉识别与嗅觉命名有关，后者更像是一种言语而非嗅觉感知任务。右利手的语言功能通常偏侧化到左脑半球，而嗅觉处理主要发生在受刺激侧的同侧。用更大的样本量重新研究健康右利手人群的与侧别相关的效应，并研究年龄或性别对嗅觉识别偏侧化效应的影响。在 438 名右利手参与者中，对单侧鼻腔（左侧或右侧）进行了“Sniffin' Sticks”嗅觉识别测试。在这 438 名参与者中，有 199 名测试了左侧鼻腔，239 名测试了右侧鼻腔。根据年龄（18 岁）或性别将他们分为两组，在年龄较大组（18 岁）和年龄较小组（18 岁）中，根据性别又分为亚组。在成年人（年龄＞18 岁）中，左侧鼻腔的嗅觉识别得分明显高于右侧鼻腔（ = 2.21， = .03），在男性参与者中，左侧鼻腔的嗅觉识别得分也明显高于右侧鼻腔（ = 2.01， = 0.04）。本研究发现，与年龄较小组（年龄≤18 岁）相比，成年组（年龄＞18 岁）的左侧鼻腔嗅觉识别得分明显高于右侧鼻腔；男性的左侧鼻腔嗅觉识别得分也明显高于右侧鼻腔。在成年组（年龄＞18 岁）中，与女性相比，男性的嗅觉识别在左侧鼻腔的表现优于右侧鼻腔；在男性组中，年龄较小者的嗅觉识别在左侧鼻腔的表现优于年龄较大者。在成年组（年龄＞18 岁）中，男性亚组在嗅觉识别的偏侧化中发挥了更重要的作用。性别和年龄似乎对嗅觉识别的偏侧化有很大影响。
