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  11. Mild Hunger Elicits Attentional Desensitization To Visual Food Cues In Healthy, Non-obese Individuals

Mild hunger elicits attentional desensitization to visual food cues in healthy, non-obese individuals

Nicol Schlezingerová1, Petra Málková1, Martin Kocourek1,2

  • 1Department of Physiology, Faculty of Science, Charles University, Prague, Czechia.

Frontiers in Psychology
|September 24, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

Fasting reduces visual attention to food cues, indicating satiety influences visual processing. This effect is independent of physiological arousal and attentional interference, highlighting hunger-related mechanisms.

Area of Science:

  • Neuroscience
  • Physiology
  • Psychology

Background:

  • Visual systems are highly attuned to food cues, with environmental food omnipresence linked to obesity.
  • The impact of post-meal states on visual attention to food stimuli is not well understood.
  • Understanding how hunger influences food cue processing is crucial for public health initiatives.

Purpose of the Study:

  • To investigate how a 12-hour fast affects visual attention towards food and non-food stimuli.
  • To determine if hunger state modulates attentional interference and physiological arousal in response to food cues.

Main Methods:

  • Eye-tracking measured visual fixations on food and non-food stimuli in fasted versus satiated participants.
  • The Food Stroop task assessed attentional interference, while electrodermal activity (EDA) measured physiological arousal.
Keywords:
EDAFood Stroop testVisual Analog Scaleeye-tracking

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  • Salivary alpha-amylase and cortisol levels were analyzed to correlate with hunger and stress.

    • Main Results:

    • Fasted participants showed decreased visual attention to food stimuli compared to satiated individuals.
    • No significant differences in attentional interference (Food Stroop) or physiological arousal (EDA) were found between groups.
    • Salivary alpha-amylase was higher in satiated individuals and inversely correlated with subjective hunger ratings.

    Conclusions:

    • Mild hunger significantly modulates visual processing of food cues, independent of physiological arousal.
    • Satiety, not stress, appears to be the primary driver of altered visual attention to food stimuli.
    • Salivary alpha-amylase may serve as a satiety marker, rather than a stress indicator, in this context.
    hunger
    salivary cortisol and alpha-amylase
    satiety
    visual food cues