Does food deprivation affect perceived size?

Zitron-Emanuel, Noa; Ganel, Tzvi

doi:10.1016/j.appet.2020.104829

Cited by 4 publications

(3 citation statements)

References 34 publications

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“…Later studies further supported the concept that short‐term fasting negatively affects cognitive performance (Anderson et al, 2018; Komiyama et al, 2016; Pena‐Jorquera et al, 2021). There is also evidence that meal skipping impacts visual perception, reducing the susceptibility to size illusions (Zitron‐Emanuel & Ganel, 2018, 2020) and affecting the idiosyncratic preference for local or global processing (Pender et al, 2014). However, findings from different studies are partially inconsistent, possibly because of the heterogeneity of methods used for assessing performance.…”

Section: Discussionmentioning

confidence: 99%

Effect of fasting on short‐term visual plasticity in adult humans

Animali

Steinwurzel

Dardano

et al. 2022

Eur J of Neuroscience

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Brain plasticity and function is impaired in conditions of metabolic dysregulation, such as obesity. Less is known on whether brain function is also affected by transient and physiological metabolic changes, such as the alternation between fasting and fed state. Here we asked whether these changes affect the transient shift of ocular dominance that follows short‐term monocular deprivation, a form of homeostatic plasticity. We further asked whether variations in three of the main metabolic and hormonal pathways affected in obesity (glucose metabolism, leptin signalling and fatty acid metabolism) correlate with plasticity changes. We measured the effects of 2 h monocular deprivation in three conditions: post‐absorptive state (fasting), after ingestion of a standardised meal and during infusion of glucagon‐like peptide‐1 (GLP‐1), an incretin physiologically released upon meal ingestion that plays a key role in glucose metabolism. We found that short‐term plasticity was less manifest in fasting than in fed state, whereas GLP‐1 infusion did not elicit reliable changes compared to fasting. Although we confirmed a positive association between plasticity and supraphysiological GLP‐1 levels, achieved by GLP‐1 infusion, we found that none of the parameters linked to glucose metabolism could predict the plasticity reduction in the fasting versus fed state. Instead, this was selectively associated with the increase in plasma beta‐hydroxybutyrate (B‐OH) levels during fasting, which suggests a link between neural function and energy substrates alternative to glucose. These results reveal a previously unexplored link between homeostatic brain plasticity and the physiological changes associated with the daily fast‐fed cycle.

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Section: Discussionmentioning

confidence: 99%

Effect of fasting on short‐term visual plasticity in adult humans

Animali

Steinwurzel

Dardano

et al. 2022

Eur J of Neuroscience

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“…For example, children of lower economic status tend to overestimate the size of coins than those of higher economic status (Bruner & Goodman, 1947). Similarly, food deprivation leads people to perceive food stimuli as bigger (Zitron‐Emanuel & Ganel, 2020). Together, prior work suggests that individuals growing up in resource‐scarce environments pay more attention to the limited resources because wasting resources could be more distressing to them, relative to those growing up in resource‐abundant environments.…”

Section: Theoretical Background and Hypothesis Developmentmentioning

confidence: 99%

The impact of childhood environments on the sunk‐cost fallacy

Jhang

Lee

Park

et al. 2022

Psychology and Marketing

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The sunk‐cost fallacy is a well‐documented cognitive bias in the decision‐making literature. Although the emerging literature on childhood socioeconomic status suggests that early‐life environments shape individuals' decision strategies and have a long‐lasting impact on their decisions, little is known about the impact of childhood socioeconomic status on the sunk‐cost fallacy. Using two different scenarios and an actual choice task, we provide converging evidence that individuals who grew up in resource‐scarce environments (those with lower childhood socioeconomic status) are reluctant to abandon inferior choices merely because they have already invested substantial resources in them, resulting in the sunk‐cost fallacy. This fallacy occurs because individuals with lower childhood socioeconomic status tend to perceive the loss of their prior investments as more wasteful than those with higher childhood socioeconomic status.

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“…Seven studies within five articles [41,[48][49][50][51] included measures of visual perception, or the ability to process and respond to visual stimuli. No studies involving this domain were identified in our previous review [22].…”

Section: Perceptual Abilitiesmentioning

confidence: 99%

How Does Fasting Affect Cognition? An Updated Systematic Review (2013–2020)

et al. 2021

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Introduction:The goal of this review was to provide an update on the literature examining how voluntary, temporary abstention from eating impacts cognitive function. Methods and Results:We evaluated peer-reviewed articles published between August 2013 and January 2021 that assessed adults, included a measure of cognitive functioning with neutral stimuli, and compared individuals in a fasted state to individuals in a fed state (either within-or between-subject designs). Nineteen articles (21 studies) met inclusion criteria. Sample sizes, fasting methods, and tasks varied across studies. Review of studies indicated that fasting was associated with deficits in cognitive functioning; few studies indicated a benefit in cognitive functioning following a single voluntary fast. Summary:The heterogeneity and rarity of available studies limits the conclusions that can be drawn. Several crucial psychosocial and sociodemographic moderators remain unexplored.Recommendations for future work are discussed.

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Does food deprivation affect perceived size?

Cited by 4 publications

References 34 publications

Effect of fasting on short‐term visual plasticity in adult humans

Effect of fasting on short‐term visual plasticity in adult humans

The impact of childhood environments on the sunk‐cost fallacy

How Does Fasting Affect Cognition? An Updated Systematic Review (2013–2020)

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