Our feelings, thoughts and attitudes are influenced by changes in brain chemistry.

我们的情感、想法和态度受发生在大脑内的化学变化影响。

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Perhaps because eating causes a change in brain chemistry that instead of bringing pleasure makes anorectics feel anxious.

其中的原因在于进餐会让脑部的化学物质发生变化，而这种变化，并没有让厌食症患者感到快乐，反而时忧虑。

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Psychology: Thought patterns and consciousness altered by small changes in brain chemistry or small changes in physical environmental stimuli.

心理学：通过大脑内化学小小变化或者物理环境刺激小的改变就改变了思维模式和意识。

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The researcher said that before the body begins to freeze, cold can cause changes in brain chemistry which lead to hallucinations.

VOA: special.2010.02.24

Professor Stone says the emotional patterns could be linked to changes in how people see the world, or maybe even changes in brain chemistry.

VOA: special.2010.08.03

Mr. Parris, who is also a practicing personal-injury attorney, says he got interested in ways to affect brain chemistry because he wanted to be more persuasive in court.

WSJ: A California City Is Into Tweeting��Chirping, Actually��in a Big Way

In addition, Dr Kelley identified long-lasting changes in rats' brain chemistry - similar to those caused by extended use of morphine or heroin.

BBC: Fast food 'as addictive as heroin'

Amotivational syndrome causes a change in the chemistry of the brain.

CNN: Famous fried eggs