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Watching pornography may shrink the brain and dull responses to sexual stimulation， researchers have suggested.

Scientists have found for the first time that regularly viewing sexual images could be physically harmful.

Researchers from the Max Planck Institute in Berlin found that a part of the brain which activates when people feel motivated or rewarded， shrinks and works less efficiently.

So people who watch a lot of porn are likely to need increasingly graphic material to achieve the same sexual stimulation.

For the study， Dr Kuhn and her colleague Jurgen Gallinat from Charite University， also in Berlin， recruited 64 healthy men between the ages of 21 and 45 years and asked them questions about their porn-watching habits.

They also took images of the men’s brains to measure volume and to see how their brains reacted to pornographic pictures.

They found noticeable differences in the men who abstained compared with those who regularly accessed sexual videos or images.

However other researchers claimed that pornography in moderation was probably not damaging.最新av网站

“Everything is going to be bad in excess and it’s probably not terrible in moderation，” Dr Gregory Tau of the Columbia University

Dr Tau， who was not involved with the study， agreed that more research should be done in this area and that longer studies would be need to find out if porn leads to brain changes.

“It is possible that there are individuals with a certain kind of brain that are more susceptible to these kinds of behaviors，” he said.

The study was published in JAMA Psychiatry.

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据《逐日电讯报》报谈，探望泄漏不雅看色情电影可能使大脑放松，并对性刺激响应鲁钝。

科学家初度发现，依期地不雅看性图片会对生理有毁伤。

柏林马普商讨所的探望者发现，当东谈主们感到兴盛或者受到表彰时，脑的一部分瓦解会放松况且后果低下。

是以看过好多色情音频视频的东谈主很容易需要比蓝本更多的形象的感官刺激来达到相似的性刺激。

商讨中，库恩博士和他来自柏林查理特大学的共事尤根，搜集了64位年事在21到45岁的健康男士，问他们对于不雅看色情片的问题。

他们还给这些东谈主的大脑拍了相片，测量大脑容量，不雅察大脑受到色情图片刺激时的响应。

同频繁依期地看色情影像的男东谈主比，在领有公正力的东谈主身上，他们看到了权臣的分袂。

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可是，有一些探望者宣称有节制的不雅看色情影像不会对大脑产生毁伤。

“任何事过度的作念齐是无益的，有节制地作念可能不算太糟，”哥伦比亚大学的格雷戈里博士说。

格雷戈里博士莫得参与这项探望，他以为为了以后或者讲授色情毁伤大脑应该作念更多的探望。

“可能存在天生对这些东西敏锐的大脑，”他说。

这项商讨发表在《好意思国医学会杂志—神经病学》上。

（译者 fsy1991 剪辑 王辉）

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