Manipulating attention during eating effects food intake and medial prefrontal cortex fNIRS response in women with cognitive restraint

IF 3.8 2区医学 Q1 BEHAVIORAL SCIENCES

Appetite Pub Date : 2026-04-01 Epub Date: 2025-12-15 DOI:10.1016/j.appet.2025.108416

Eram Albajri , Hasan Ayaz , Patricia A. Shewokis , Angelo Del Parigi , Sinclair A. Smith , Jennifer J. Quinlan , Jennifer A. Nasser

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引用次数: 0

Abstract

Objective

To investigate how shifting the attention away from food being eaten (by women who are cognitively restrained) toward another food-related stimulus affects food intake and relative increases in neural activity from baseline (as relative changes in oxygenated hemoglobin, HbO) within the medial prefrontal cortex (mPFC).

Methods

Participants were divided into 2 groups of 23 subjects based on a median split of TFEQ-R score: cognitively restrained (CR) or non-cognitively restrained (NCR). Relative change from baseline in mPFC activity was measured using functional near infrared spectroscopy (fNIRS) during ad libitum consumption of a preferred high fat/high sugar food over a 3- to10-min period while participants viewed food advertisement (FV) or nature scene (NV) videos.

Results

After controlling for covariates, including body mass index and FV eating duration, we found that group-by-condition interaction was significantly able to predict grams of food consumed (P = 0.031). In the CR group, food intake positively correlated with mPFC HbO under both video conditions (P < 0. 05). The increase in mPFC HbO from baseline under both conditions was higher in CR subjects (P = 0.035, 95 % CI: 0.04, 1.20).

Conclusions

Exposure to a palatable food advertisement video elicited different behavioral and neural responses between CR and NCR groups. While food intake did not increase in the CR group under FV, their mPFC activity was positively correlated with intake. These findings suggest that maintaining restraint under hedonic distraction may require greater cognitive effort. Future studies should explore longer-term effects on self-regulation.

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进食时操纵注意力对认知受限女性食物摄入和内侧前额叶皮层fNIRS反应的影响。

目的：研究将注意力从正在吃的食物（认知受限的女性）转移到另一种与食物相关的刺激如何影响食物摄入和内侧前额叶皮层（mPFC）内神经活动相对基线的相对增加（如氧合血红蛋白，HbO的相对变化）。方法：根据TFEQ-R评分中位数分成认知受限组（CR）和非认知受限组（NCR），每组23人。在观看食品广告（FV）或自然场景（NV）视频的3- 10分钟时间内，研究人员利用功能性近红外光谱（fNIRS）测量了参与者在随意食用高脂肪/高糖食物时mPFC活性与基线的相对变化。结果：在控制了协变量（包括体重指数和进食时间）后，我们发现群体-条件相互作用能够显著预测摄入的食物克数（P = 0.031）。CR组在两种视频条件下，食物摄取量与mPFC HbO呈正相关（P < 0.05）。05)。在两种情况下，CR受试者的mPFC HbO较基线增加更高（P = 0.035, 95% CI: 0.04, 1.20）。结论：可口食品广告视频在CR组和NCR组之间引起不同的行为和神经反应。虽然在FV下CR组的食物摄取量没有增加，但它们的mPFC活性与摄取量呈正相关。这些发现表明，在享乐分心的情况下保持克制可能需要更大的认知努力。未来的研究应该探索对自我调节的长期影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Appetite 医学-行为科学

CiteScore

9.10

自引率

11.10%

发文量

566

审稿时长

13.4 weeks

期刊介绍： Appetite is an international research journal specializing in cultural, social, psychological, sensory and physiological influences on the selection and intake of foods and drinks. It covers normal and disordered eating and drinking and welcomes studies of both human and non-human animal behaviour toward food. Appetite publishes research reports, reviews and commentaries. Thematic special issues appear regularly. From time to time the journal carries abstracts from professional meetings. Submissions to Appetite are expected to be based primarily on observations directly related to the selection and intake of foods and drinks; papers that are primarily focused on topics such as nutrition or obesity will not be considered unless they specifically make a novel scientific contribution to the understanding of appetite in line with the journal's aims and scope.