雙語：過度飲用咖啡可導致幻聽

If you keep hearing things that aren't there, you're probably drinking too much coffee。

Just five cups a day could be enough to make your ears play tricks on you, according to researchers。

In an experiment, volunteers who had consumed "high levels" of caffeine thought they were listening to Bing Crosby singing White Christmas even though the song was not being played。

The researchers described caffeine as "the most commonly used psychoactive drug"。

They said the study showed that the health risks of too much coffee need to be addressed。

In the tests, 92 volunteers were asked to listen to a constant fuzzy sound known as white noise。

Professor Simon Crowe, of La Trobe University in Melbourne, said: "We also told them that within the white noise there may be parts of the song White Christmas and if you hear it, press a button. We didn't include White Christmas in the white noise but found that more people who were very stressed and had high levels of caffeine thought they heard the song."

The team from the university's School of Psychological Sciences found that five cups of coffee a day was enough to trigger this。如果你總是幻聽，可能是因爲咖啡喝太多。

研究人員稱，一天5杯咖啡就能讓你的耳朵不靈便。

試驗中，服用了“大量”咖啡因的志願者認爲自己聽到了Bing Crosby唱的《White Christmas》，而事實上這首歌並沒有播放。

研究人員稱咖啡因是“最常被使用的精神藥物”。

他們還稱該研究表明，過量飲用咖啡導致的健康風險亟待解決。

測試要求92名志願者聽一段不間斷的白噪音(用以掩蓋令人心煩的雜音的聲音)。

墨爾本拉籌伯大學的教授西蒙•克羅稱：“我們還告訴他們，在白噪音播放期間，可能會有歌曲《White Christmas》的幾個片段，如果誰聽到了，就按下按鈕。事實上白噪音中並沒有《White Christmas》，但我們發現更多情緒緊張、服用大量咖啡因的人羣稱自己聽到了歌曲片段。”

這個來自拉籌伯大學心理科學院的研究小組發現，一天5杯咖啡便足以導致這種幻聽狀況。