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首页> 外文期刊>Appetite >To eat or not to eat? Availability of food modulates the electrocortical response to food pictures in restrained eaters.
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To eat or not to eat? Availability of food modulates the electrocortical response to food pictures in restrained eaters.

机译：吃还是不吃？食物的供应量调节了进食受限的人对食物图片的电皮质反应。

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摘要

Restrained eating is a pattern of chronic dietary restriction interspersed with episodes of disinhibited overeating. The present study investigated whether this eating pattern is related to altered electrocortical processing of appetitive food stimuli in two different motivational contexts. Restrained (n=19) and unrestrained eaters (n=21) passively viewed high-caloric food pictures, along with normative emotional pictures in a first block. In a second block, food availability was manipulated: participants were told that half of the food items should later be eaten (available food items), whereas the other half of food items was said to be unavailable. While no group differences were obtained during the first block, restrained eaters' event-related potentials (ERPs) were significantly modulated by the availability manipulation: ERPs for available food cues were significantly less positive than ERPs to unavailable food cues. Restrained eaters might down-regulate their reactivity to available food cues to maintain their dietary rules.
机译：饮食不节制是一种慢性饮食限制的形式，散布着不节制的暴饮暴食。本研究调查了这种饮食方式是否与在两种不同动机环境下改变食性食物刺激的电皮质处理有关。在第一个区块中，被约束的（n = 19）和不受约束的食者（n = 21）被动地查看了高热量的食物图片以及规范的情感图片。在第二个步骤中，控制了食物的可获得性：告诉参与者稍后应食用一半的食物（可食用的食物），而据说另一半的食物不可用。尽管在第一个程序段中未获得组别差异，但通过可用性操作显着调节了受限制的进食者事件相关电位（ERP）：可用食物提示的ERPs对不可用食物提示的积极性明显低于ERP。食欲不振的人可能会下调其对可用食物线索的反应性，以维持其饮食规则。

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