Jiang Tao, Soussignan Robert, Rigaud Daniel, Martin Sylviane, Royet Jean-Pierre, Brondel Laurent, Schaal Benoist
Centre Européen des Sciences du Goût, CNRS (UMR 5170), Université Bourgogne, 15 Rue Hugues Picardet, 21000 Dijon, France.
Physiol Behav. 2008 Oct 20;95(3):464-70. doi: 10.1016/j.physbeh.2008.07.014. Epub 2008 Jul 16.
Negative alliesthesia to olfactory and visual stimuli was assessed in 29 normal-weight women who, on alternate days, were either fasting or in a postprandial state after an ad libitum lunch. The participants were alternatively exposed to food and non-food pictures and odorants, and then rated for their hedonic appreciation (liking) and their desire to ingest (wanting) the evoked foods. While negative alliesthesia was observed only for food stimuli, it did not equally affect all food categories in either sensory modality. The stimuli representing foods eaten in typical local main dishes or having high energy density (e.g., pizza, bacon, beef, cheese) evoked clear negative alliesthesia, whereas this was not the case for those less consumed within a customary meal or associated with desserts (i.e., fruits). Furthermore, the visual food stimuli triggered a more negative shift in liking than did the food odours. Finally, the shift in wanting between pre- and post-meal state was more important than the shift in liking. These results suggest that alliesthesia may be influenced by both metabolic and non-metabolic factors.
对29名体重正常的女性进行了嗅觉和视觉刺激的负性变应性评估，这些女性在交替的日子里，要么处于禁食状态，要么在随意午餐后的餐后状态。参与者被交替暴露于食物和非食物图片及气味剂中，然后对所诱发食物的享乐性评价（喜好程度）和摄取欲望（想吃程度）进行评分。虽然仅在食物刺激时观察到负性变应性，但在两种感觉模式下，它对所有食物类别影响并不相同。代表典型当地主菜中食用的食物或具有高能量密度的食物（如披萨、培根、牛肉、奶酪）的刺激引发了明显的负性变应性，而在常规餐食中较少食用或与甜点相关的食物（即水果）则并非如此。此外，视觉食物刺激比食物气味引发的喜好程度的负向变化更大。最后，饭前和饭后状态下想吃程度的变化比喜好程度的变化更显著。这些结果表明，变应性可能受代谢和非代谢因素的影响。
