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Laurence Jacquot, Jean-Louis Millot, Aurore Colette Paillard
BACKGROUND: Individuals who experience motion sickness (MS) frequently mention the presence of smells in the environment as a factor favoring the occurrence of MS symptoms. The aim of the present work was to compare olfactory function in MS sensitive (MS+) and insensitive (MS-) subjects. METHODS: Olfactory testing included determination of odor detection thresholds, subjective evaluation of the quality (intensity, hedonicity, and familiarity) of three different odorants (limonene, isovaleric acid, and petrol) as well as measures of skin conductance responses to these three odorants...
May 1, 2018: Aerospace Medicine and Human Performance
Lauri Nummenmaa, Tiina Saanijoki, Lauri Tuominen, Jussi Hirvonen, Jetro J Tuulari, Pirjo Nuutila, Kari Kalliokoski
The endogenous μ-opioid receptor (MOR) system regulates motivational and hedonic processing. We tested directly whether individual differences in MOR are associated with neural reward responses to food pictures in humans. We scanned 33 non-obese individuals with positron emission tomography (PET) using the MOR-specific radioligand [11 C]carfentanil. During a functional magnetic resonance imaging (fMRI) scan, the subjects viewed pictures of appetizing versus bland foods to elicit reward responses. MOR availability was measured in key components of the reward and emotion circuits and used to predict BOLD-fMRI responses to foods...
April 16, 2018: Nature Communications
John M Chater, Donald J Merhaut, Zhenyu Jia, Mary Lu Arpaia, Peggy A Mauk, John E Preece
Pomegranate (Punica granatum L.) is an important fruit in many cultures. The fruit and juice have risen in popularity as it was discovered that pomegranate has relatively high antioxidant activity compared to most other fruits. In this study, six cultivars were utilized to determine consumer acceptance compared to the industry standard, 'Wonderful,' which comprises 90% to 95% of commercial production in the United States. Fruit were sourced from 2 cultivar field trials, one in inland Riverside, California, and one in coastal Ventura County, California...
April 16, 2018: Journal of Food Science
Yuko Maejima, Shoko Yokota, Katsuhiko Nishimori, Kenju Shimomura
<br>Oxytocin was discovered in 1906 as a peptide that promotes delivery and milk ejection; however, its additional physiological functions were determined 100 years later. Many recent articles have reported newly discovered effects of oxytocin on social communication, bonding, reward-related behavior, adipose tissue, and muscle and food intake regulation. Because oxytocin neurons project to various regions in the brain that contribute to both feeding reward (hedonic feeding) and the regulation of energy balance (homeostatic feeding), the mechanisms of oxytocin on food intake regulation are complicated and largely unknown...
April 16, 2018: Neuroendocrinology
Gabriela Ribeiro, Marta Camacho, Osvaldo Santos, Cristina Pontes, Sandra Torres, Albino J Oliveira-Maia
Obesity-associated differences in hedonic hunger, while consistently reported, have not been adequately quantified, with most studies failing to demonstrate strong correlations between Body Mass Index (BMI) and hedonic hunger indicators. Here, we quantified and assessed the nature of the relationship between hedonic hunger and BMI, in a cross-sectional study using the Portuguese version of the PFS (P-PFS) to measure hedonic hunger. Data were collected from 1266 participants belonging to non-clinical, clinical (candidates for weight-loss surgery) and population samples...
April 11, 2018: Scientific Reports
Monika Imschloss, Jana Lorenz
BACKGROUND: Goal setting is among the most common behavioral change techniques employed in contemporary self-tracking apps. For these techniques to be effective, it is relevant to understand how the visual presentation of goal-related outcomes employed in the app design affects users' responses to their self-tracking outcomes. OBJECTIVE: This study examined whether a spatially close (vs distant) presentation of mixed positive and negative self-tracking outcomes from multiple domains (ie, activity, diet) on a digital device's screen can provide users the opportunity to hedonically edit their self-tracking outcome profile (ie, to view their mixed self-tracking outcomes in the most positive light)...
April 11, 2018: JMIR MHealth and UHealth
Marc A Fournier, Mengxi Dong, Matthew N Quitasol, Nic M Weststrate, Stefano I Di Domenico
The concept of personality coherence refers to the extent of psychological unity and wholeness embodied within each individual. In the present research, we examined the extent to which the narrative, functional, and organismic conceptualizations of personality coherence interrelate, as well as their associations with psychological abilities and personal adjustment. College students ( N = 391) narrated accounts of three personal memories; listed five personal strivings that they subsequently compared and evaluated; completed performance measures of their intelligence, wisdom, and creativity; and rated their hedonic and eudaimonic well-being...
March 1, 2018: Personality & Social Psychology Bulletin
Andrea B Goldschmidt, Kathryn E Smith, Ross D Crosby, Hope K Boyd, Elizabeth Dougherty, Scott G Engel, Alissa Haedt-Matt
OBJECTIVES: Contextual factors related to maladaptive eating behavior in youth with overweight/obesity are poorly understood. This pilot study sought to elucidate immediate internal and external cues related to perceptions of overeating and loss of control (LOC) over eating in a heterogeneous sample of children and adolescents with overweight/obesity assessed in their natural environments. METHOD: Community-based youth [N = 40; 55% female (n = 22)], aged 8-14 y (M age = 11...
April 6, 2018: International Journal of Eating Disorders
Rajesh P Bhargave, Nicole Votolato Montgomery, Joseph P Redden
Individuals often mutually experience a stimulus with a relationship partner or social group (e.g., snacking with friends). Yet, little is currently understood about how a sense of coexperiencing affects hedonic judgments of experiences that unfold over time. Research on the shared attention state has suggested that hedonic judgments are intensified when individuals coexperience a stimulus (vs. experiencing it alone), and other related work has found that the social environment influences hedonic judgments in shared (vs...
April 2018: Journal of Personality and Social Psychology
Nathalie De Cock, Wendy Van Lippevelde, Jolien Vangeel, Melissa Notebaert, Kathleen Beullens, Steven Eggermont, Benedicte Deforche, Lea Maes, Lien Goossens, Sandra Verbeken, Ellen Moens, Leentje Vervoort, Caroline Braet, Lieven Huybregts, Patrick Kolsteren, John Van Camp, Carl Lachat
OBJECTIVE: Adolescents' snacking habits are driven by both explicit reflective and implicit hedonic processes. Hedonic pathways and differences in sensitivity to food rewards in addition to reflective determinants should be considered. The present study evaluated the feasibility and impact of a mobile phone-delivered intervention, incorporating explicit reflective and implicit rewarding strategies, on adolescents' snack intake. DESIGN: Adolescents (n 988; mean age 14·9 (sd 0·70) years, 59·4 % boys) completed a non-randomized clustered controlled trial...
April 2, 2018: Public Health Nutrition
Julie Iven, Jessica R Biesiekierski, Dongxing Zhao, Eveline Deloose, Owen G O'Daly, Inge Depoortere, Jan Tack, Lukas Van Oudenhove
OBJECTIVES: Intragastric bitter tastants may decrease appetite and food intake. We aimed to investigate the gut-brain signaling and brain mechanisms underlying these effects. METHODS: Brain responses to intragastric quinine-hydrochloride (QHCl, 10 µmol/kg) or placebo infusion were recorded using functional magnetic resonance imaging in 15 healthy women. Appetite-related sensations, plasma levels of gastrointestinal hormones and hedonic food intake (ad libitum drink test) were assessed...
April 2, 2018: Nutritional Neuroscience
Alyssa J Bakke, Cody A Stubbs, Elliott H McDowell, Kameron J Moding, Susan L Johnson, John E Hayes
Only a quarter of adults and 7% of children consume recommended amounts of vegetables each day. Often vegetables are not initially palatable due to bitterness, which may lead children and adults to refuse to taste or eat them. The objective of this research was to determine if very small amounts of sugar or salt (common household ingredients) could lead to significant reductions in bitterness intensity and increased hedonic ratings of green vegetable purees. For Experiment 1, three different green vegetable purees (broccoli, spinach, and kale) were prepared with different levels of sugar (0%, 0...
March 29, 2018: Appetite
David Martín-Consuegra, Estrella Díaz, Mar Gómez, Arturo Molina
Luxury brand marketers have recently turned their attention to customer-driven social media devoted to their brands. The key concepts of involvement, interaction and behavioral intention provide the theoretical foundation to investigate luxury brands. The purpose of this study is to test a model that analyzes the relationship among brand involvement, consumer-brand interaction and behavioral intention in the context of luxury brand-related activities on social media. Based on content value theory, the present research identifies the moderating role of utilitarian/hedonic motivations on the relationships proposed...
March 28, 2018: Physiology & Behavior
Penelope Oliver, Sara Cicerale, Edwin Pang, Russell Keast
Australian consumers desire the development of a more flavorsome Australian strawberry cultivar. To aid in the development of well-liked strawberries, the attributes driving liking need to be identified. The objective of this research is to apply Preference Mapping (PM) techniques to the descriptive profile of commercial and newly bred strawberry cultivars, together with consumer preference data to determine the flavors contributing to liking. A trained sensory panel (n = 12) used Quantitative Descriptive Analysis (QDA®) methodology to evaluate two appearance, seven aroma, five texture, 10 flavor and 10 aftertaste attributes of three commercial strawberry cultivars and six elite breeding lines grown in Victoria, Australia...
March 30, 2018: Journal of Food Science
Rogier M van Erp Taalman Kip, Giel J M Hutschemaekers
OBJECTIVE: The literature suggests a distinction between illness (negative health) and the ability to cope with challenges such as illness (positive health). The two continua model of mental health distinguishes psychiatric symptoms (illness) from well-being (positive health). Well-being consists of hedonic, eudaimonic, and social well-being, constituting one factor that is moderately correlated with psychopathology in the general population. In a mental health care population, we examined whether the three dimensions of well-being are distinguishable and whether well-being is also moderately correlated with symptoms...
March 30, 2018: Journal of Clinical Psychology
David W Pittman, Alexandra M Brantly, Alexandra L Drobonick, Hannah T King, Daniel C Mesta, Caroline G Richards, Manjari Lal, Manshun Lai
Negative hedonic sensory qualities of HIV antiretroviral drugs often reduce patient adherence particularly in pediatric populations requiring oral consumption. This study examines the palatability of an innovative delivery mechanism utilizing a freeze-drying-in-blister approach to create fast-dissolving tablets (FDTs) containing a fixed-dose combination of lopinavir and ritonavir (LPV/r). Consumption patterns of solutions during brief-access and long-term testing and baby foodstuff consumption were analyzed to evaluate the orosensory detection and avoidance of placebo FDTs containing no LPV/r (FDT-) and FDTs containing LPV/r (FDT+)...
2018: AIDS Research and Treatment
David Garcia-Burgos, Sabine Maglieri, Claus Vögele, Simone Munsch
Background: Despite on-going efforts to better understand dysregulated eating, the olfactory-gustatory deficits and food preferences in eating disorders (ED), and the mechanisms underlying the perception of and responses to food properties in anorexia nervosa (AN) and bulimia nervosa (BN) remain largely unknown; both during the course of the illness and compared to healthy populations. It is, therefore, necessary to systematically investigate the gustatory perception and hedonics of taste in patients with AN and BN...
2018: Frontiers in Psychology
Denize Oliveira, Juliana Galhardo, Gastón Ares, Luís M Cunha, Rosires Deliza
Sugar sweetened beverages are one of the main sources of added sugar in the diet. Therefore, sugar reduction in these products could contribute to the prevention of various negative health conditions, such as obesity, diabetes and cardiovascular diseases. In this context, the present work aimed to study consumer sensory and hedonic perception towards sugar reduction in fruit nectars. Five sequential difference thresholds for added sugar in three fruit nectars (passion fruit, orange/passion fruit and orange/pomegranate) were determined based on consumer perception...
May 2018: Food Research International
F Pavli, A A Argyri, G-J E Nychas, C Tassou, N Chorianopoulos
The aim of the present study was to investigate the potential use of Fourier transform infrared (FTIR) spectroscopy to quantify biochemical changes occurring in ham slices packed with probiotic supplemented edible films and treated with High Pressure Processing (HPP), in monitoring spoilage. Details regarding the data collection and experimental procedure were presented by Pavli et al. (2017). A series of Partial Least Squares (PLS) models were developed to correlate spectral data from FTIR analysis with ham spoilage during storage under vacuum at different temperatures (4, 8 and 12°C)...
April 2018: Food Research International
Stefanie Horndasch, Julie Roesch, Clemens Forster, Arnd Dörfler, Silja Lindsiepe, Hartmut Heinrich, Holmer Graap, Gunther H Moll, Oliver Kratz
BACKGROUND: A constant preoccupation with food and restrictive eating are main symptoms of anorexia nervosa (AN). Imaging studies revealed aberrant neural activation patterns in brain regions processing hedonic and reward reactions as well as-potentially aversive-emotions. An imbalance between so called "bottom-up" and "top-down" control areas is discussed. The present study is focusing on neural processing of disease-specific food stimuli and emotional stimuli and its developmental course in adolescent and adult AN patients and could offer new insight into differential mechanisms underlying shorter or more chronic disease...
2018: PloS One
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