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目的以视觉刺激为手段研究大脑对性心理的反应,在国内外均有报道。但是,以往少见针对刺激手段(图片或影片)的研究。本文试图发现图片和影片在作为刺激手段时有什么差别。方法以13例正常女性为样本,通过功能核磁共振比较其观看含有性内容的影片和图片时的大脑兴奋差异,使用FSL4.0数据分析软件统计确定有显著差异脑区。结果配对t检验的结果显示:1相较于涉性图片,观看涉性影片时颞叶皮质,小脑,丘脑,中脑,尾状核等处的兴奋性有所增强(Z>2.3,P<0.05),差异最大的脑区在颞中回(NMI坐标:56,-24,-12);2观看涉性图片时,侧枕叶皮质的兴奋明显强于涉性影片(Z>2.3,P<0.05),并略呈左右对称分布。差异最大的脑区NMI坐标为42,-86,-4。结论本文认为,那些在兴奋程度上影片多于图片的大脑区域,应该与性信息的处理过程更加相关。而那些在兴奋程度上影片少于图片的大脑区域,应该与性信息的识别更加相关。该结果可能对理解性心理的调控有一定意义。
The purpose of visual stimulation as a means to study the brain response to sexual psychology, both at home and abroad have been reported. However, there have been rare studies of stimuli (pictures or videos) in the past. This article attempts to find out when pictures and videos are used as stimuli. Methods Thirteen normal females were used as samples. Functional MRI was used to compare the differences in brain excitability when videos and pictures with sexual content were viewed. FSL4.0 data analysis software was used to determine the significant differences in brain regions. Results The results of paired t-test showed that compared with the pictures of related subjects, the excitability of temporal cortex, cerebellum, thalamus, midbrain, caudate nucleus and so on increased when compared with related films (Z> 2.3, P < 0.05). The brain regions with the largest difference were in the middle of the temporal gyrus (NMI coordinates: 56, -24, -12). 2 When looking at the related images, the excitability of the lateral occipital cortex was significantly stronger than that of the related films (Z> 2.3, P <0.05), and slightly symmetrical distribution. The most differentiated brain area NMI coordinates were 42, -86, -4. Conclusion This article argues that those regions of the brain that are more video-aided than their excitement should be more relevant to the processing of sexual information. And those in the excitement of the film less than the picture of the brain area, sex identification and information should be more relevant. This result may have some significance for the regulation of understanding psychology.