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 20 of 80 for “"Appetitive"”.
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The Influence of an Appetitive Conditioned Stimulus on Interval Timing Behavior
… current study examined the effect of a Pavlovian appetitive conditioned stimulus (CS) on timing performance, based on the PIT paradigm. Nine pigeons were exposed to pairings of a 120-s conditioned stimulus (flashing or steady houselight) and unconditioned stimulus (food). The pigeons were then …
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The differential effects of stressors on aversive, novel and appetitive stimuli in rats
… an array of effects on both aversively- and appetitively-motivated behaviors. Because aversive stimuli motivate behaviors in aversively-motivated tasks, assessing stressors effects in these tasks requires re-exposure to aversive stimuli. This is not the case in appetitively-motivated tasks. …
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The Effects of Nucleus Accumbens Opiate and Adenosine Receptor Activity on Appetitive Operant Learning
… been shown to be important for the learning of appetitive instrumental conditioning tasks through NMDA receptor activity (Smith-Roe & Kelley, 2000). The present set of experiments examined the roles of opiate and adenosine receptors in appetitive instrumental conditioning through pharmacological …
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Appetitive Responding and the Female Menstrual Cycle: An Investigation into the Post-Auricular Reflex
… linked to motivation and reward, emotion, and appetitive responding. The PAR responds to pleasant stimuli, including stimuli that are relevant to evolutionary themes. The purpose of the current study was to explore the nature of the post-auricular reflex, and in particular, to examine potential …
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Positive mood and cognition: the moderating role of appetitive motivation, neural and physiological correlates
… effect of positive mood on cognition depends on appetitive motivation, such that only positive mood low in appetitive motivation results in broader/more flexible cognition, whilst narrower/more stable cognition occurs as a result of positive mood that is high in appetitive motivation. Six studies …
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Investigating the influence of LH-projecting BLA neurons upon motivated behavioral responding and appetitive learning
… but the role of the BLA's projection to LH in appetitive conditioning and reward-seeking remains unclear. Through the use of optogenetic techniques in mice, I have investigated the influence of LH-projecting BLA neurons upon motivated behavioral responding, which has indicated that the …
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Role of group II metabotropic glutamate receptor subtype 2 (mGluR2) in appetitive and consummatory aspects of ethanol reinforcement
… was then increased over sessions to a RR20. For appetitive testing, animals received weekly drug injections followed by a non-reinforced extinction session. To determine effects of blockade of NAc core mGluR2/3 receptors on agonist-induced suppression of EtOH-seeking, a separate group of male …
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Discrete Emotion and Motivation: Relative activation in Appetitive and Aversive Motivational System as a Function of Anger, Sadness, Fear, and Joy embedded in the Content of Televised Information Campaigns.
… predictable motivational activation in the appetitive and aversive systems underlies the production and experience of discrete emotions (anger, sadness, joy, and fear) experienced while viewing televised PSAs. The current study was conducted from the perspective of LC4MP which theorizes that …
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A neuronal switch for approach/avoidance in cost-benefit decision
… and avoidance responses are dependent on the appetitive state, such that very hungry animals may attack noxious stimuli and satiated animals will avoid appetitive stimuli. A multifunctional turn network is active in response to the unilateral application of the stimulus, promoting the …
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Endocannabinoid Modulation of Spatial Memory in Aversively and Appetitively Motivated Barnes Maze Tasks
… result from the hedonics (i.e., aversive vs. appetitive) or is related to the required responses associated with these disparate tasks. In order to evaluate whether the hedonics is the determining factor, we used either aversive (i.e., escape from bright lights and air turbulence) or …
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Space and Value in the Primate Amygdala and Basal Forebrain
… outcomes in addition to those resulting in appetitive outcomes. This involves attending to appetitive stimuli in order to obtain positive outcomes, and aversive stimuli in order to avoid negative outcomes. While we first demonstrated that amygdala might play a role in influencing spatial …
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The interplay between historical trauma, substance use disorders, appetitive aggression and the link with violent crime among young male adults in conflict with the law in South Africa
… trauma, substance use disorders (SUDs) and appetitive aggression and its links to violent crime among a cohort of 159 young male adults (aged 25 to 34) incarcerated at George Correctional Centre in the Garden Route District in the Western Cape Province. The context of why there are high …
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Not All Desires Are Created Equal: Exploring a Dual -Motivation Account of Consumer Desire
… discusses two sources of desire motivation: appetitive and volitive. These represent the different sources of the motivational intensity of the desire. Appetitive motivation is drawn from the perceived intrinsic pleasure or pain of the desire, whereas volitive motivation is drawn …
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Behavioral Models of Cocaine Use Disorder
… can be difficult since the consumptive and appetitive responses are both directed towards the same operant. A variety of analysis methods, procedures, and schedules of reinforcement can be used to help separate the conflated consumptive vs appetitive aspects of self-administration, and …
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The Effects of Allopregnanolone on Feeding: A Behavioural Investigation
… in rodents. The effects of allopregnanolone on appetitive and Consummatory behaviors associated with feeding were examined. Allopregnanolone had no effect on consummatory behaviors, as measured by the taste reactivity test. In the lickometer test, allopregnanolone significantly increased the …
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Pharmacological Reversal of Cognitive Bias in The Chick Anxiety-Depression Continuum Model
… a less optimistic interpretation of ambiguous appetitive stimuli. Such biases have also been pharmacologically reversed in clinical trials. To measure cognitive bias in the chick anxiety-depression continuum model, chicks exposed to an isolation stressor of 5 min to induce an anxiety-like or 60 …
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Peripheral Processing in the Mollusc and the Role of Feedback
… likely from multiple systems controlling appetitive and aversive response states.
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Investigating Maladaptive Habit Formation and Threat Influences in Obsessive-Compulsive Disorder
… cues on behaviour. The current state of human appetitive PIT was examined and used as a framework underpinning the acquisition of maladaptive habits. The PIT procedure was then adapted to capture context-dependent threat influences learning, mimicking OCD symptomology. The wide variety of …
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A Role for the Lateral Habenula in a Delay Based Decision Making Test
… controls more complex decision-making during appetitive behaviors, since LHb disruption impairs hippocampal (HPC)-dependent memory. This study tested whether LHb’s role in appetitive behaviors is at least in part due to its integration of internal state information and limbic cortical …
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THE BEHAVIORAL AND PHARMACOLOGICAL EFFECTS OF CAFFEINE ON THE CONSUMPTION AND HEDONIC EVALUATION OF SUCROSE SOLUTIONS
… of beverages in humans, and increase the appetitive motivation to work for sucrose pellet rewards in rats. However, no animal research has examined the impact that caffeine has on the hedonic evaluation and licking microstructure of sweet solutions. In this thesis, the effect of caffeine …
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