遺伝子 that can 脅す you out of your mind

Scientists have discovered an '苦悩 遺伝子' that makes people more fearful, it was （人命などを）奪う，主張するd yesterday.

A team of 研究員s 報告（する）／憶測d the 発見 after showing volunteers photographs of people looking 脅迫的な.

Those with the 遺伝子 反応するd in a much different way to those who did not have it.

A small almond-形態／調整d part of the brain which 答える／応じるs when a person is 脅すd became more active.

The 遺伝子 - a 'short' variant of the human serotonin transporter 遺伝子 - has also been linked to autism and manic 不景気.

People with the 'long' variant of the 遺伝子 experienced いっそう少なく brain activity in the 組織／臓器's '中心 of 恐れる' - known as the amygdala.

Previous 熟考する／考慮するs have 設立する that the more 去っていく／社交的な a person is the stronger their amygdala's 返答 tends to be to happy 表現s when they are 存在 shown photographs of people who are smiling and laughing.

研究員 Dr Daniel Weinbergerby, of the U.S. 国家の 学校／設ける of Mental Health, said: 'By showing how a variation in a 遺伝子 発揮するs its 影響（力） on the brain's centre for 恐れる 過程ing, this finding may lend credence to earlier 報告（する）／憶測s linking the short 遺伝子 variant to わずかに higher levels of 苦悩.

'How biologically reactive we are to a signal of danger, which is partly heritable, can place us at 危険 for an 苦悩 disorder. Or it may be an adaptive, 肯定的な せいにする, such as 増加するd vigilance, depending on the circumstances.'

In the 熟考する／考慮する - 詳細（に述べる）s of which are published today in the 定期刊行物 Science - 28 people were shown a fearful or angry 直面する while having their brains scanned.

In a separate 実験, 研究員s analysed デオキシリボ核酸 from 72 volunteers to 決定する which 見解／翻訳／版 of the human serotonin transporter 遺伝子 they had.

Then the volunteers were put through a 研究室／実験室 実験（する） often used in psychology 実験s called 'the CO2 challenge'.

Each person received two breaths through a mouthpiece - the first was oxygen, the second a mixture of oxygen and 炭酸ガス designed to make people feel momentarily breathless.

In people with 苦悩 disorders, the 炭酸ガス often 誘発する／引き起こすs a panic attack.

The scientists 設立する that people with the 'short' 見解／翻訳／版 of the 重要な 遺伝子 表明するd more 恐れる during the 実験, 強化するing the theory that it is 伴う／関わるd in 苦悩.

Dr Weinberger said that the 研究 '供給するs 可能性のある insight into one factor that 与える／捧げるs to the way people experience emotion'.