科学家们还认为,摸黑进食能让人更直观地了解究竟吃多少才算饱,而平时人们根据经验,要吃上一整碗饭才满足。
It also prevents the ‘cephalic’ phase of digestion which is triggered by the sight of food, promoting salivation and the release of gastric juices and so makes food, literally, less easy to swallow.
人们在摸黑进食时,由于看不见食物,大脑消化组织刺激分泌的唾液与胃液就会少得多,让食物较难下咽。
Lead author Dr Britta Renner said: “Visual deprivation caused a pronounced dissociation between actual and perceived intake.
此次研究的首席作者布瑞塔·伦纳博士说:“视觉的剥夺会让自我感觉的进食量与实际情况之间产生偏差。”
“This may provide an unobtrusive and naturalistic means to change the experience of eating behaviour."
“这会在不经意间改变人们的进食体验。”
To test the effect, 50 people were blindfolded with modified ski goggles, and 40 were allowed to see their food. All were told not to eat within two hours of the experiment. They were then given three 95g bowls of cherry, caramel and vanilla ice cream and invited to eat for 15 minutes. Their bowls were taken away and the remaining ice-cream measured, while the participants were quizzed on how much they thought they had eaten.
为了验证这一影响,科学家要求50人用改造过的滑雪镜蒙住眼睛,另外40人可以看着食物进餐,并规定他们在试验用餐前的两小时内不能吃东西。接着科学家为每人提供了三碗冰淇淋,分别是樱桃、焦糖和香草口味的,每碗95克。规定用餐时间为十五分钟。之后科学家将他们的碗撤走,记录了每人吃剩的冰淇淋量,同时询问他们认为自己吃了多少。
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