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.
Results
Showing 1 to 11 of 11 for “"aversive learning"”.
-
Models of aposematism and the role of aversive learning
… the role of co-evolution and the mechanisms of aversive learning are at the heart of the current research. On the one hand, to explain stability and persistence of aposematic signals requires a theory of co-evolution of defence and signals. On the other hand, the role of the predator and details …
-
Cocaine Use Modulates Neural Prediction Error During Aversive Learning
… cocaine use may contribute to dysfunctions in aversive learning, this paper uses fMRI and an aversive learning task to examine cocaine dependent individuals abstinent from cocaine use (C-) and using as usual (C+). Specifically of interest is the neural signal representing actual loss compared …
-
The Feedback-Related Negativity is a Time-Dependent Brain Mechanism that Facilitates Aversive Learning: Implications for the Reinforcement Learning FRN Hypothesis
<p>Organisms encode rewarding and aversive experiences through reinforcement learning, capitalizing on prediction errors (PEs), which adapt action strategies over time. Computational theories are explicit that PE signals should update action weights continuously over the course of a behavioral …
-
Non-Canonical Axonal Insulin Receptor Signaling Drives Aversive Olfactory Learning
… memories. A simple model of associative learning is provided by nematode C. elegans, which can form memories of different types of odor stimuli through its simple yet sophisticated nervous system. C. elegans uses its sensory neurons to detect and navigate towards the odors of its food …
-
Expression of tyramine β – hydroxylase and tyrosine hydroxylase genes in response to odor valence in the brain of the honey bee, Apis mellifera
… approach or avoidance behaviors to rewarding or aversive stimuli are reinforced via specific neural pathways. In invertebrates, less is understood about the mechanisms and brain regions involved in mediating reward and aversion. Invertebrate research suggests octopamine (OA) signaling mediates …
-
Combining microbial functional metagenomics and Caenorhabditis elegans genetics to uncover and characterise novel bioactive compounds
… a complex behavioural strategy known as aversive learning is employed to avoid violacein toxicity. When noxious violacein cannot be avoided, the toxic compound appears to activate the insulin-like signaling cascade, an evolutionary conserved innate immunity pathway. In summary, this work …
-
The clinical, computational, and neuropharmacological determinants of learning under uncertainty
… estimation of such uncertainty. Associative learning tasks provide a framework within which researchers can induce different types of uncertainty in order to see how the participant responds to them, through learning under uncertainty paradigms. Computational modelling of participants …
-
The role of intensity, temporal synchrony, and biogenic amines for unimodal and multimodal integration during learning and memory of honey bees and bumble bees
… processing, and the role of biogenic amines in learning and memory tasks of honey bees and bumble bees. The three chapters provide valuable insights into these interconnected concepts and on the mechanisms underlying bee’s behaviour. The first chapter focuses on the dependency of intensity, for …
-
Experience With Chemical Cues Influences Subsequent Behavior of Rainbow Darters, Etheostoma Caeruleum
… of the study are ambiguous with respect to learning because darters in the alarm treatment showed significant reductions in baseline activity (number of hops) before the presentation of the models. However, the finding that exposure to alarm pheromones can affect rainbow darter behavior …
-
A neural and behavioural investigation of aberrant feeding in animal models of autism spectrum disorder
… conditioned taste aversion (CTA), a protective learning mechanism against ingestion of foods inducing nausea/malaise. Feeding issues in ASD, such as pica, may reflect disruptions in aversion-based learning. Additionally, OT has been implicated in CTA acquisition, and VPA rats exhibit OT …
-
Optimizing the neuromodulation of pathological neural circuits: multiparametric approaches and biomarker prediction
… results showed lower brain activity during the aversive learning phase (anticipation or feedback of aversive events) and during the extinction phase in the nucleus accumbens (NAc), the rostral anterior cingulate cortex (rACC), and the inferior frontal gyrus (IFG) in the post-capsulotomy …