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50 Years Ago

机译:50年前

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It has been reliably demonstrated that rats can discriminate between the presence or absence of X-rays... The process by which X-rays elicit arousal and orienting reactions in mammals has not yet been determined. However, for simplicity we assume this mechanism operates via a radiation receptor. Attempts to locate this hypothetical radiation receptor have yielded conflicting results ...We used a narrow 3/16-in. X-ray beam as a signal or conditioned stimulus to warn the animal of a subsequent shock to the paws. The beam was most effective when it was directed at the olfactory region of the head…In an attempt to clarify this issue, we conducted a study of the effectiveness of X-ray as an arousing stimulus in rats the olfactory bulbs of which had been removed ... The results indicate a distinct loss of sensitivity when the olfactory bulbs are removed.
机译:已经可靠地证明了大鼠可以区分X射线的存在与否。X射线在哺乳动物中引起唤醒和定向反应的过程尚未确定。但是,为简单起见,我们假设此机制通过辐射接收器起作用。尝试定位这种假设的辐射受体产生了矛盾的结果...我们使用了狭窄的3 / 16-in。 X射线束作为信号或条件刺激来警告动物随后对脚掌的电击。当将光束对准头部的嗅觉区域时,光束最有效。为了阐明这个问题,我们进行了一项研究,研究了X射线作为刺激性物质对老鼠的嗅觉刺激的有效性。 ……结果表明,除去嗅球后,灵敏度明显下降。

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  • 来源
    《Nature》 |2015年第7537期|46-46|共1页
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  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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