Hopkins W D, Marino L
Department of Psychology, Berry College, Mount Berry, GA 30149, USA.
Neuropsychologia. 2000;38(4):493-9. doi: 10.1016/s0028-3932(99)00090-1.
A comparative study of asymmetries in cerebral width was conducted in a sample of great apes, Old World and New World monkeys. The brains of all subjects were scanned using magnetic resonance imaging (MRI) and the first axial slice above the third ventricle was identified. Measures of cerebral width were taken at distances of 10% and 30% of the length from the occipital and frontal poles. Cerebral widths were measured from the midline to the lateral surface of the brain for each area. The great apes exhibited a right-frontal and left-occipital directional asymmetry in cerebral width. In contrast, no significant mean directional asymmetries were found in either the Old or New World monkeys. The results in the great apes are consistent with previous reports of petalia asymmetries and suggest that the use of MRI is a valid approach to the assessment of neuroanatomical asymmetries in primates.
在一组大猩猩、旧世界猴和新世界猴样本中开展了一项脑宽度不对称性的比较研究。使用磁共振成像（MRI）对所有研究对象的大脑进行扫描，并确定第三脑室上方的第一个轴位切片。在距枕极和额极长度的10%和30%处测量脑宽度。在每个区域从大脑中线到外侧表面测量脑宽度。大猩猩在脑宽度上表现出右额叶和左枕叶方向的不对称性。相比之下，在旧世界猴和新世界猴中均未发现显著的平均方向不对称性。大猩猩的研究结果与之前关于花瓣状不对称性的报告一致，并表明使用MRI是评估灵长类动物神经解剖学不对称性的有效方法。
