Universität zu Köln

Oren, Shiran ORCID: 0000-0001-7690-3589, Tittgemeyer, Marc ORCID: 0000-0001-5072-2149, Rigoux, Lionel, Schlamann, Marc, Schonberg, Tom and Kuzmanovic, Bojana (2022). Neural encoding of food and monetary reward delivery. Neuroimage, 257. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1095-9572

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Abstract

Different types of rewards such as food and money can similarly drive our behavior owing to shared brain processes encoding their subjective value. However, while the value of money is abstract and needs to be learned, the value of food is rooted in the innate processing of sensory properties and nutritional utilization. Yet, the actual consumption of food and the receipt of money have never been directly contrasted in the same experiment, questioning what unique neural processes differentiate those reward types. To fill this gap, we examined the distinct and common neural responses to the delivery of food and monetary rewards during fMRI.In a novel experimental approach, we parametrically manipulated the subjective value of food and monetary rewards by modulating the quantities of administered palatable milkshake and monetary gains. The receipt of increasing amounts of milkshake and money recruited the ventral striatum and the ventromedial prefrontal cortex, previously associated with value encoding. Notably, the consumption and the subsequent evaluation of increasing quantities of milkshake relative to money revealed an extended recruitment of brain regions related to taste, somatosensory processing, and salience. Moreover, we detected a decline of reward encoding in the ventral tegmental area, nucleus accumbens, and vmPFC, indicating that these regions may be susceptible to time-dependent effects upon accumulation of food and money rewards.Relative to monetary gains, the consumption and evaluation of palatable milkshakes engaged complex neural processing over and above value tracking, emphasizing the critical contribution of taste and other sensory properties to the processing of food rewards. Furthermore, our results highlight the need to closely monitor metabolic states and neural responses to the accumulation of rewards to pinpoint the mechanisms underlying time-dependent dynamics of reward-related processing.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Oren, Shiran UNSPECIFIED orcid.org/0000-0001-7690-3589 UNSPECIFIED Tittgemeyer, Marc UNSPECIFIED orcid.org/0000-0001-5072-2149 UNSPECIFIED Rigoux, Lionel UNSPECIFIED UNSPECIFIED UNSPECIFIED Schlamann, Marc UNSPECIFIED UNSPECIFIED UNSPECIFIED Schonberg, Tom UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuzmanovic, Bojana UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-676144
DOI:	10.1016/j.neuroimage.2022.119335
Journal or Publication Title:	Neuroimage
Volume:	257
Date:	2022
Publisher:	ACADEMIC PRESS INC ELSEVIER SCIENCE
Place of Publication:	SAN DIEGO
ISSN:	1095-9572
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language VENTRAL TEGMENTAL AREA; VALUATION SYSTEM; GUSTATORY CORTEX; COMMON CURRENCY; TASTE; REPRESENTATION; DISSOCIATION; ACTIVATION; VALUES; METAANALYSIS Multiple languages Neurosciences; Neuroimaging; Radiology, Nuclear Medicine & Medical Imaging Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67614