Sex, beauty and the orbitofrontal cortex
Sex, beauty and the orbitofrontal cortex
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DOI：
10.1016/j.ijpsycho.2006.03.010
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发表时间：
2007-02-01
影响因子：
3
通讯作者：
Ishai, Alumit
中科院分区：
文献类型：
--
作者：
Ishai, Alumit
面孔感知是由人脑中的一个分布式神经系统调节的。注意、记忆和情绪调节面孔引起的神经激活，但性别和性取向的影响目前尚不清楚。为了测试受试者是否会对他们喜欢的面孔做出更多反应，我们扫描了40名异性恋和同性恋男性和女性，同时评估他们的面部吸引力。在行为上，无论性别和性取向如何，所有受试者都对男性和女性面孔的吸引力进行了相似的评分。与我们的假设一致的是，在内侧眶前皮质(OFC)发现了刺激性别、美貌和受试者的性偏好之间的三向交互作用。在异性恋女性和同性恋男性中，漂亮的男性面孔比有吸引力的女性面孔引起更强的激活，而在异性恋男性和同性恋女性中，有吸引力的女性面孔比有吸引力的男性面孔引起更强的激活。这些发现表明，OFC代表了与性相关的突出面孔的价值，与他们的生殖适合性无关。(C)2006爱思唯尔B.V.保留所有权利。
Face perception is mediated by a distributed neural system in the human brain. Attention, memory and emotion modulate the neural activation evoked by faces, however the effects of gender and sexual orientation are currently unknown. To test whether subjects would respond more to their sexually-preferred faces, we scanned 40 hetero- and homosexual men and women whilst they assessed facial attractiveness. Behaviorally, regardless of their gender and sexual orientation, all subjects similarly rated the attractiveness of both male and female faces. Consistent with our hypothesis, a three-way interaction between stimulus gender, beauty and the sexual preference of the subject was found in the medial orbitofrontal cortex (OFC). In heterosexual women and homosexual men, attractive male faces elicited stronger activation than attractive female faces, whereas in heterosexual men and homosexual women, attractive female faces evoked stronger activation than attractive male faces. These findings suggest that the OFC represents the value of salient sexually-relevant faces, irrespective of their reproductive fitness. (c) 2006 Elsevier B.V. All rights reserved.