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Effects of food exposure on food-related inhibitory control in restrained eaters: An ERP study

机译:食物暴露对抑制食物与食物相关抑制控制的影响:ERP研究

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摘要

Restrained eaters are likely to overeat when pre-exposed to cues such as the sight, smell, thought or taste of palatable food whereas unrestrained eaters remain unaffected. However, the neurocognitive correlates of inhibitory control to food stimuli after food exposure have not been examined. This study examined food-related and food-unrelated inhibitory control with two variants of Go/No-go task by means of event-related potentials (ERPs) before and after food exposure among restrained and unrestrained eaters. Results revealed that there was a reduction of food-related no-go N2a neural response strength in frontal/frontal-central among restrained eaters compared to unrestrained eaters. Meanwhile, for restrained eaters, food-related no-go P3 amplitude increased significantly after exposure in comparison with baseline, but for unrestrained eaters there was no difference. Importantly, the exposure-induced difference in inhibition between restrained and unrestrained eaters was specific for food-related responses. Results indicated that restrained eaters may be less efficient in monitoring conflict over food-related stimuli and require more cognitive resources to inhibit food-specific responses when exposed to cues of attractive food.
机译:当预先暴露于可口食物的视线,嗅觉,思想或味道等暗示时,克制的食物可能会过度吃饱,而无拘无束的食客仍未受到影响。然而,尚未检查食物暴露后对食物刺激的抑制对食品刺激的神经认知相关性。本研究通过在抑制和无拘无束的食物中,通过事件相关的潜在(ERP)检查了与食物有关的和食物无关的抑制控制,通过事件相关的潜在(ERP)。结果表明,与无拘无束的食物相比,抑制食客中的食物有关的No-Ge-Go N2A神经响应强度降低了额外的食物。同时,对于克制的食物,与基线相比,暴露后,与克制的食物,食物相关的无-Go P3振幅显着增加,但对于无拘无束的食物,没有差异。重要的是,抑制和无拘无束食用者之间的抑制差异的抗曝光差异对于食物有关的反应是特异的。结果表明,在对食物相关刺激的冲突中,抑制食用者可能减少效率,并且在暴露于有吸引力的食物提示时需要更多的认知资源来抑制食物特异性反应。

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