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23-07-2018 | Original Article

Food deprivation disrupts normal holistic processing of domain-specific stimuli

Tijdschrift:
Psychological Research
Auteurs:
Noa Zitron-Emanuel, Tzvi Ganel
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Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s00426-018-1062-z) contains supplementary material, which is available to authorized users.

Abstract

Food deprivation has been shown to lead to a set of biological and psychological responses, including a decrease in perceptual thresholds, and an increase in attentional allocation for domain-specific, food-related stimuli. Here, we tested whether food deprivation could lead to a qualitative change in the way food is perceived. To this purpose, we tested the effect of food deprivation on a basic feature of human perception, the holistic processing of object shape. In three experiments, we examined the effect of food deprivation on participants’ susceptibility to the height–width illusion, which served as a maker for holistic processing. In all experiments, food deprivation led to an abnormal, non-holistic processing of shape, which resulted in a total reduction of the illusion for food-related, but not for control stimuli. These results show that food deprivation alters the way food is perceived, and propose that motivational factors modulate people’s resistance to perceptual distortions for domain-specific stimuli.

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Extra materiaal
Supplementary material 1 (XLSX 19 KB)
426_2018_1062_MOESM1_ESM.xlsx
Supplementary material 2 (XLSX 20 KB)
426_2018_1062_MOESM2_ESM.xlsx
Supplementary material 3 (XLSX 19 KB)
426_2018_1062_MOESM3_ESM.xlsx
Supplementary material 4 (DOCX 192 KB)
426_2018_1062_MOESM4_ESM.docx
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