Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"food seeking"”.
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Mapping the neural circuits that underlie metabolic vs. emotional regulation of food-seeking behavior
<p>Flexibly adjusting food-seeking behaviors based on metabolic needs and environmental threats is crucial for animal survival. In humans, maladaptive food-seeking behaviors that contravene energy homeostasis, which is often driven by food-associated cues with hedonic reward values, lead to obesity …
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Dissociating Roles for the Nucleus Accumbens Core and Shell in Priming-, Cue-, and Stress-Induced Reinstatement of Food-Seeking Behavior
… after a period of abstinence from unhealthy foods report that relapse was triggered by re-exposure to palatable foods acting as a prime, exposure to food-associated cues, or exposure to stress. Dietary relapse can be studied using an animal reinstatement model, and research has found that …
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A Comparison of the Manipulations of Dopaminergic, Opioidergic or Serotonergic Systems within the Nucleus Acccumbens on the Cue-Evoked Relapse to Food-Seeking
… availability are known to reinstate reward-seeking behaviors after periods of suppressed responding for a reward. Previous research indicates that the nucleus accumbens (NAcc) is a critical brain region involved in the relapse to drug-seeking behaviors and may likewise be involved in dietary …
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Neuronal cicuits and reinforcement mechanisms underlying feeding behaviour
… homeostasis. Current research in the control of food consumption stresses the importance of identifying and establishing the specific roles of homeostatic neurons, which sense the body’s energetic state and elicit complex and flexible food seeking behaviours. Recent developments in optogenetics, …
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Neurobehavioral Mechanisms Contributing To Alterations In Food Intake Driven By Caudal Hindbrain Acting Signals
… treatment. Given that energy balance and food intake are regulated in the central nervous system, the development of treatment relies on basic science investigations of the neuroendocrine controls of feeding and the neural hubs that modulate this control, including the nucleus tractus …
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Characterization of selected single and convergent stimuli-induced behaviors in larval zebrafish
… mediates stimuli response, from startle to food-seeking behavior. We characterized a method of distinguishing between a behavioral movement response in reaction to an externally induced shock stimuli, and a directly-induced muscle contraction from the same stimuli. From an imaging …
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Neural Development to Neurodegeneration Through the Mind of a Worm
… These mutations can also lead to defects in food searching behaviors. These observations lead us to conclude that the EphR/ephrin pathway has a role in circuitry assembly and food-seeking behaviors.</p> <p>After the nervous system has developed, proper establishment and formation must be …
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Leptin Action on Dopamine Neurons: Biochemical and Behavioral Analysis
… are brain regions commonly activated by hedonic foods and drugs of abuse, and therefore, potentially common mechanisms underlying behaviors associated with them. Additionally, the metabolic state of an animal can affect drug seeking behavior. The discovery that leptin receptor (Lepr) is expressed …
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Role of the Subthalamic Nucleus in the Circuitry Mediating Food- and Cocaine-Seeking Behavior
… subsequent reinstatement of sucrose- and cocaine-seeking behavior. Bilateral STN lesions block reinstatement of cocaine-seeking behavior, but not the reinstatement of food-seeking behavior. Neuronal correlates in the NAcc are also investigated. NAcc neurons respond to cocaine or sucrose and the …
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Feline Obesity: Food Toys and Owner Perceived Quality of Life During a Prescribed Weight
… in failure to complete the weight loss process. Food toys may be used to enhance environmental enrichment, allow cats to express their natural predatory behavior and overall improve owner-perceived quality of life. Therefore, we set out to investigate the role of food toys in owner-perceived …
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An assessment of reconsolidation blockade to disrupt memories relevant to psychiatric disorders
… attempts to disrupt reconsolidation of a cocaine-seeking memory having undergone extensive training (>1 month, designed to promote the formation of drug-seeking habits) were also unsuccessful. However, when animals were trained in a similar fashion to respond for a food reinforcer treatment with a …
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Structure-Function Analysis of Insect Olfactory Receptors
… for a variety of tasks including location of food sources, which can vary from yeast growing on ripe fruits for the vinegar fly Drosophila melanogaster to mammals for blood-feeding insects such as the mosquito Anopheles gambiae. The first informational relay between the external environment …
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Reciprocal interactions between feeding and turning motor networks mediate foraging decisions in a predatory sea-slug
… reduced the animal’s performance in a food-seeking task and attenuated responses to stimuli in the major afferent nerves innervating the cephalic sensory organs. These observations suggest that dopaminergic synaptic transmission in the peripheral nervous system is a contributor to …
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An Assessment of Obesity and Hyperphagia In Individuals With Smith-Magenis Syndrome
… SMS as 76% of parent¡¯s report having to lock food away from their child. Females¡¯ age ¡Ý 20 years of age had the highest mean behavior, drive and severity scores as well as the highest BMI. Thus, this study concludes that it appears overweight and obesity, as well as hyperphagia, are present …
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Neural Mechanisms of Homeostatic Need and Reward
… that encode or fulfill the need states for food, water, sleep, sex, aggression and parenting. These need-sensing neurons monitor both environmental cues and interoceptive conditions to elicit appropriate and specific behavioral programs towards restoration of these needs. The homeostatic …