【摘要】 目的:了解与视觉性刺激相关的脑功能定位。方法:用张贴广告的形式征集到13例正常女性,通过功能核磁共振比较其观看普通影片和含有性内容图片时的大脑兴奋差异,确定差异有统计学意义的脑区。结果:与中性图片相比,涉性图片激发了广泛的大脑区域,包括侧枕叶皮质、中央后回、顶上小叶、枕叶梭状回、海马等。大部分脑区的兴奋都是左右半球对称的,只有额下回岛盖部(Z=3.64,P<0.0001)和三角部(Z=3.42,P=0.003)为右脑优势。讨论:本文通过功能核磁共振方法发现,当女性受试在被呈示以与性相关的图片时,大脑右半球额下回岛盖部和三角部有显著的不对称兴奋。该脑区可能对性心理调控有重要意义。更多还原

【Abstract】 Objective:To investigate the brain activation patten associated with visual sexual stimuli.Method:Thirteen healthy right-handed women were enrolled through advertisements on campus.They were scanned under functional magnetic resonance imaging(fMRI) when they watched emotional neutral films excepts and erotic films excepts.Statistic on theses data reveals the difference of brain activation.Result:The results showed that,compared to emotional neutral films,sexual visual stimuli were associated with the activation of a set of bilateral brain areas including lateral occipital cortex,postcentral gyrus,superior parietal lobule,occipital fusiform gyrus,hippocampus,and so on.Most activated brain areas are bilateral.Only in inferior frontal gyrus pars opercularis(Z=3.64,P<0.0001) and pars triangular(Z=3.42,P=0.003) there were significant right hemispheric activation.Conclusion:fMRI results indicate that inferior frontal gyrus is related to the visual sexual stimuli of women subjects,and is specified on the right hemisphere rather than left one.This sphere-special area may play an important role on sexual message processing.更多还原