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Physiology & Behavior

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https://www.readbyqxmd.com/read/28442334/pica-practices-among-apparently-healthy-women-and-their-young-children-in-ghana
#1
B A Z Abu, V L van den Berg, J E Raubenheimer, V J Louw
BACKGROUND: Pica is an increased appetite/craving for food or non-food substances like clay, and chalk, and is strongly associated with iron deficiency (ID) anemia. This study assessed pica practices among non-pregnant mothers and their children, 12-to-59months, in an anemia endemic population in Ghana. SUBJECTS AND METHODS: A cross-sectional quantitative survey was conducted in two randomly selected districts in Northern Ghana. The researchers developed semi-structured questionnaires with components on pica practice, history and experiences and administered via structured face-to-face interviews with mothers (N=161)...
April 22, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28442333/effects-of-auditory-stimuli-on-electrical-activity-in-the-brain-during-cycle-ergometry
#2
Marcelo Bigliassi, Costas I Karageorghis, Michael J Wright, Guido Orgs, Alexander V Nowicky
The present study sought to further understanding of the brain mechanisms that underlie the effects of music on perceptual, affective, and visceral responses during whole-body modes of exercise. Eighteen participants were administered light-to-moderate intensity bouts of cycle ergometer exercise. Each exercise bout was of 12-min duration (warm-up [3min], exercise [6min], and warm-down [3min]). Portable techniques were used to monitor the electrical activity in the brain, heart, and muscle during the administration of three conditions: music, audiobook, and control...
April 22, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28442332/the-individual-preferred-velocity-of-stroking-touch-as-a-stable-measurement
#3
Amanda Luong, Johanna Bendas, Roberta Etzi, Håkan Olausson, Ilona Croy
Affective touch is of fundamental importance in human social interactions and there is an increasing interest in using touch as a probe for general affective perception. To this end, we developed a test of preferred velocity (ToP-V) of touch and tested whether the individually preferred stroking velocity is a stable and valid measurement. In study one, thirty healthy participants (18-30years, 17 women) were examined with the ToP-V. Therefore, pairs of different slow stroking stimuli were presented by the Rotary Tactile Stimulator - a robotic device - on the forearm and the participants chose the velocity they preferred in a forced choice paradigm...
April 22, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28438635/testosterone-and-cortisol-responses-in-male-soccer-players-the-effect-of-home-and-away-venues
#4
Melissa Fothergill, Sandy Wolfson, Nick Neave
The present studies examined the influence of playing venue on psychobiological responses in male soccer players. Many studies have demonstrated the existence of a home advantage, wherein teams perform better at home than away. A recent focus has attempted to explain this advantage from a psychobiological perspective, with studies showing hormonal differences with regard to venue, game outcome, dominance and perceived stress. Two studies investigated testosterone and cortisol responses in relation to home and away venues...
April 21, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28433466/orosensory-responsiveness-and-alcohol-behaviour
#5
Margaret Thibodeau, Martha Bajec, Gary Pickering
Consumption of alcoholic beverages is widespread through much of the world, and significantly impacts human health and well-being. We sought to determine the contribution of orosensation ('taste') to several alcohol intake measures by examining general responsiveness to taste and somatosensory stimuli in a convenience sample of 435 adults recruited from six cohorts. Each cohort was divided into quantiles based on their responsiveness to sweet, sour, bitter, salty, umami, metallic, and astringent stimuli, and the resulting quantiles pooled for analysis (Kruskal-Wallis ANOVA)...
April 20, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28433470/daily-supplementation-of-dietary-protein-improves-the-metabolic-effects-of-glp-1-based-pharmacotherapy-in-lean-and-obese-rats
#6
Elizabeth G Mietlicki-Baase, Kieran Koch-Laskowski, Lauren E McGrath, Joanna Krawczyk, Tram Pham, Rinzin Lhamo, David J Reiner, Matthew R Hayes
Glucagon-like peptide-1 (GLP-1) is an incretin hormone released from intestinal L-cells in response to food entering into the gastrointestinal tract. GLP-1-based pharmaceuticals improve blood glucose regulation and reduce feeding. Specific macronutrients, when ingested, may trigger GLP-1 secretion and enhance the effects of systemic sitagliptin, a pharmacological inhibitor of DPP-IV (an enzyme that rapidly degrades GLP-1). In particular, macronutrient constituents found in dairy foods may act as potent secretagogues for GLP-1, and acute preclinical trials show that ingestion of dairy protein may represent a promising adjunct behavioral therapy in combination with sitagliptin...
April 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28433469/delayed-effect-of-early-life-corticosterone-treatment-on-adult-anti-predator-behavior-in-a-common-passerine
#7
Jacquelyn K Grace, Laure Martin-Gousset, Frédéric Angelier
Acute, short-term effects of early-life stress and associated glucocorticoid upregulation on behavior are widely documented across vertebrates. However, the persistence and severity of these effects are largely unknown, especially through the adult stage and in wild species. Here, we investigate long-term effects of experimental post-natal increases in a circulating glucocorticoid on antipredator behavior in wild house sparrows (Passer domesticus) tested in captivity. We manipulate circulating corticosterone concentration in wild, free-living nestlings, transfer fledglings to captivity, and test juveniles and adults for two measures of antipredator behavior: evasiveness during a direct human encounter, and propensity to escape from a risky environment...
April 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28433468/environmental-structure-and-energetic-consequences-in-groups-of-young-mice
#8
Delia S Shelton, Paul M Meyer, Karen M Ocasio
Microenvironments can have considerable physiological consequences for the inhabitants by influencing the movements of individual members. The microenvironment can permit more diverse aggregation patterns or restrict movements to certain dimensions. Here, we tested whether aspects of the microenvironment that influenced aggregation patterns also influenced the energetics of groups of young animals. We tested the effects of enclosure configuration on the group temperature and respiration of infant mice (Mus musculus)...
April 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28433467/modeling-hypohedonia-following-repeated-social-defeat-individual-vulnerability-and-dopaminergic-involvement
#9
Samantha R Spierling, Maegan Mattock, Eric P Zorrilla
Social defeat in rodents putatively can model hypohedonia. The present studies examined models for assessing hypohedonia-like behavior and tested the hypotheses that 1) individual differences in baseline reward sensitivity predict vulnerability, and 2) defeat elicits changes in pharmacological measures of striatal dopaminergic function. Male Wistar rats (n=142) received repeated defeat (3 "triad" blocks of 3 defeats) or control handling. To determine whether defeat influenced consumption of SuperSac (glucose-saccharin) over an isocaloric, less preferred, glucose solution, a 2-choice paradigm was used...
April 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28431979/past-exposure-to-fruit-and-vegetable-variety-moderates-the-link-between-fungiform-papillae-density-and-current-variety-of-fv-consumed-by-children
#10
Anna Fogel, Jackie Blissett
Higher fungiform papillae density (FPD) has been associated with lower taste sensitivity thresholds and greater perceived taste intensity along with consumption of fewer fruit and vegetables (FV). Children exposed to greater variety of FV tend to habitually consume more FV, however, it is unknown whether exposure effects are attenuated by individual differences in FPD or whether these effects vary according to sensory properties of FV. This study examined the links between children's FPD, current variety of FV consumed, and past experiences with variety of fruit and vegetables...
April 18, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28431978/temporal-niche-switching-in-arabian-oryx-oryx-leucoryx-seasonal-plasticity-of-24h-activity-patterns-in-a-large-desert-mammal
#11
Joshua G Davimes, Abdulaziz N Alagaili, Mads F Bertelsen, Osama B Mohammed, Jason Hemingway, Nigel C Bennett, Paul R Manger, Nadine Gravett
The Arabian oryx, a moderately large mammal that inhabits a harsh desert environment, has been shown to exhibit seasonal variations in activity and inactivity patterns. Here we analyzed the continuous year-round activity patterns of twelve free-roaming Arabian oryx under natural conditions from two varying desert environments in Saudi Arabia using abdominally implanted activity meters. We simultaneously recorded weather parameters at both sites to determine whether environmental factors are responsible for temporal niche switching as well as the seasonal structuring and timing of this behavioural plasticity...
April 18, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28427919/introduction-to-the-2016-ssib-special-issue
#12
EDITORIAL
Diana L Williams, Laurence J Nolan
No abstract text is available yet for this article.
April 17, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28414072/resistance-training-is-associated-with-spontaneous-changes-in-aerobic-physical-activity-but-not-overall-diet-quality-in-adults-with-prediabetes
#13
Tanya M Halliday, Jyoti Savla, Elaina L Marinik, Valisa E Hedrick, Richard A Winett, Brenda M Davy
BACKGROUND: Aerobic exercise interventions have been shown to result in alterations to dietary intake and non-exercise physical activity (PA). To date, the ability for resistance training (RT) to influence other health-related behaviors has not been examined. This study aimed to determine if initiation and maintenance of RT is associated with spontaneous changes in dietary quality and non-RT PA in adults with prediabetes. METHODS: Overweight/obese adults (n=170, BMI=32...
April 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28414073/metabolic-and-affective-consequences-of-fatherhood-in-male-california-mice
#14
Meng Zhao, Theodore Garland, Mark A Chappell, Jacob R Andrew, Wendy Saltzman
Physiological and affective condition can be modulated by the social environment and parental state in mammals. However, in species in which males assist with rearing offspring, the metabolic and affective effects of pair bonding and fatherhood on males have rarely been explored. In this study we tested the hypothesis that fathers, like mothers, experience energetic costs as well as behavioral and affective changes (e.g., depression, anxiety) associated with parenthood. We tested this hypothesis in the monogamous, biparental California mouse (Peromyscus californicus)...
April 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28412281/assessing-the-exploratory-and-anxiety-related-behaviors-of-mice-do-different-caging-systems-affect-the-outcome-of-behavioral-tests
#15
Alexia Polissidis, Sofia Zelelak, Maria Nikita, Pavlos Alexakos, Marianna Stasinopoulou, Zacharias-Ioannis Kakazanis, Nikolaos Kostomitsopoulos
Ample studies have shown that housing can affect the health, welfare and behavior of mice and therefore, the outcomes of certain experiments. The aim of this study was to investigate if three widely used housing systems, Open Top Cages (OTC), Motor Free Ventilated Cages (MFVC) and Individually Ventilated Cages (IVC) may affect exploratory and anxiety-related behaviors in mice. Subjects were 8week-old male C57Bl/6J mice (n=36) divided into three groups, OTC, IVC and MFVC groups, respectively. The experimental procedure consisted of two behavioral tests: the open field and the elevated plus maze test...
April 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28412282/physiological-reactivity-to-spontaneously-occurring-seizure-activity-in-dogs-with-epilepsy-and-their-carers
#16
R M A Packer, H A Volk, R C Fowkes
There is a complex bidirectional relationship between stress and epilepsy. Stressful stimuli and subsequent cortisol release act as a trigger for seizure activity in some individuals with epilepsy, and seizure activity itself may act as a stressor to the affected individual. Epilepsy is the most common chronic neurological condition in domestic dogs and requires chronic management by their human carers, impacting upon the quality of life of both dog and carer. Seizures occur unpredictably and may be stressful for carers to witness and manage...
April 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28411104/genetic-control-of-oromotor-phenotypes-a-survey-of-licking-and-ingestive-behaviors-in-highly-diverse-strains-of-mice
#17
Steven J St John, Lu Lu, Robert W Williams, Jennifer Saputra, John D Boughter
In order to examine genetic influences on fluid ingestion, 20-min intake of either water or 0.1M sucrose was measured in a lickometer in 18 isogenic strains of mice, including 15 inbred strains and 3 F1 hybrid crosses. Intake and licking data were examined at a number of levels, including lick rate as defined by mean or median interlick interval, as well as several microstructural parameters (i.e. burst-pause structure). In general, strain variation for ingestive phenotypes were correlated across water and sucrose in all strains, indicating fundamental, rather than stimulus-specific, mechanisms of intake...
April 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28408237/habituation-and-adaptation-to-odors-in-humans
#18
REVIEW
R Pellegrino, C Sinding, R A de Wijk, T Hummel
Habituation, or decreased behavioral response, to odors is created by repeated exposure and several detailed characteristics, whereas adaptation relates to the neural processes that constitute this decrease in a behavioral response. As with all senses, the olfactory system continually encounters an enormous variety of odorants which is why mechanisms must exist to segment them and respond to changes. Although most olfactory habitation studies have focused on animal models, this non-systematic review provides an overview of olfactory habituation and adaptation in humans, and techniques that have been used to measure them...
April 10, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28400283/the-role-of-glun2b-containing-nmda-receptors-in-short-and-long-term-fear-recall
#19
Eva Mikics, Mate Toth, Laszlo Biro, Biborka Bruzsik, Boglarka Nagy, Jozsef Haller
N-methyl-d-aspartate (NMDA) receptors are crucial synaptic elements in long-term memory formation, including the associative learning of fearful events. Although NMDA blockers were consistently shown to inhibit fear memory acquisition and recall, the clinical use of general NMDA blockers is hampered by their side effects. Recent studies revealed significant heterogeneity in the distribution and neurophysiological characteristics of NMDA receptors with different GluN2 (NR2) subunit composition, which may have differential role in fear learning and recall...
April 8, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28396289/food-craving-food-choice-and-consumption-the-role-of-impulsivity-and-sham-controlled-tdcs-stimulation-of-the-right-dlpfc
#20
Claudio Georgii, Philipp Goldhofer, Adrian Meule, Anna Richard, Jens Blechert
BACKGROUND: Impulsivity has been found to be associated with overeating and obesity. Transcranial direct current stimulation (tDCS) may enhance inhibitory control while reducing food craving and intake. Thus, the aim of the present study was to investigate whether tDCS stimulation modifies food choice, craving and consumption as a function of trait impulsivity. METHODS: Forty-two predominantly healthy-weight women received active tDCS stimulation to the right dorsolateral prefrontal cortex and sham stimulation in a within participant design...
April 8, 2017: Physiology & Behavior
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