While there are studies regarding the neural correlates of human facial attractiveness, there are few investigations considering neural responses for body form attractiveness. The most prominent physical feature defining men’s attractiveness is their physical fitness and upper body strength. Shoulder-to-hip ratio (SHR), a sexually dimorphic trait in humans, is an indicator of men’s attractiveness for both men and women. The current study is the first to report on the neurophysiological responses to male and female body forms varying in SHR in healthy heterosexual men and women observers. Electroencephalographic (EEG) signals were acquired while participants completed an oddball task as well as a subsequent attractiveness judgement task. Behavioral results showed larger SHRs were considered more attractive than smaller SHRs, regardless of stimuli and participants’ sex. The electrophysiological results for both the oddball task and the explicit judgement of attractiveness showed that brain activity related to male SHR body stimuli differed depending on the specific ratios, both at early and late processing stages. For female avatars, SHR did not modulate neural activity. Collectively the data implicate posterior brain regions in the perception of body forms that differ in attractiveness vis-a-vis variation of SHR, and frontal brain regions when such perceptions are rated explicitly.

虽然有关于人类面部吸引力的神经相关性的研究，但很少有研究考虑身体形态吸引力的神经反应。定义男性吸引力最突出的身体特征是他们的身体素质和上半身力量。肩臀比（SHR）是人类的一种性别二态性特征，是男性对男性和女性吸引力的指标。目前的研究首次报告了健康异性恋男性和女性观察者对 SHR 不同的男性和女性身体形态的神经生理反应。当参与者完成一项奇怪的任务以及随后的吸引力判断任务时，会获取脑电图（EEG）信号。行为结果显示，较大的 SHR 被认为比较小的 SHR 更具吸引力，无论刺激和参与者的性别如何。奇怪任务和吸引力明确判断的电生理学结果表明，在早期和晚期处理阶段，与男性 SHR 身体刺激相关的大脑活动根据具体比率而有所不同。对于女性化身，SHR 不会调节神经活动。总的来说，这些数据表明后脑区域在对身体形态的感知中，其吸引力相对于 SHR 的变化有所不同，而当这种感知被明确评估时，则涉及前脑区域。SHR 不调节神经活动。总的来说，这些数据表明后脑区域在对身体形态的感知中，其吸引力相对于 SHR 的变化有所不同，而当这种感知被明确评估时，则涉及前脑区域。SHR 不调节神经活动。总的来说，这些数据表明后脑区域在对身体形态的感知中，其吸引力相对于 SHR 的变化有所不同，而当这种感知被明确评估时，则涉及前脑区域。