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 22 for “"escape response"”.
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The behavioral space of zebrafish locomotion and its neural network analog
… by age. In addition to this, I have quantified escape response behavior of fish to acoustic stimuli. A parameter-free analysis was done on escape response fish movies and free-swimming movie together. The analysis showed a set of three eigenshapes is sufficient to construct the quantitative …
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Extraction, processing, and analysis of multineuron data
… which mediate the wind-evoked directed escape response. The activity of the giant interneurons was observed and tested to determine how directional information was encoded in these neurons.
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The Developmental and Behavioral Effects of Δ9-Tetrahydrocannabinol on a Spastic Mutant
… characterized by excessive startle reactions in response to unexpected stimuli. This disease can be modeled in zebrafish in the bandoneon (beo) mutant, where the <em>glrbb</em>mutation results in glycine receptor (GLYR) loss of function glycine receptors and ultimately, improper inhibitory …
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Behavioral analysis and protein folding in zebrafish larvae
… neural control. In Chapter 1, I looked into the escape response behavior in 2D. Combining an objective behavior analysis approach with a simple neurokinematic model, I was able to explain the difference between two types of escape response behavior by the difference in their corresponding neural …
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BIOMECHANICS OF AN AMPHIBIOUS FISH: MORPHOLOGY, KINEMATICS, KINETICS, AND MOTOR CONTROL OF THE MANGROVE RIVULUS, KRYPTOLEBIAS MARMORATUS (CYPRINODONTIFORMES)
… also predicted the motor pattern that drives the escape response for these fish in aquatic habitats will be similar to the motor pattern used to drive the escape response when on land since the behaviors look very similar. We used high speed video cameras to record individuals transitioning from …
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Mechanically constrained stereotypy in agonid escape responses
… constraints on movement. Focusing on the C-start escape response, I used high-speed video to quantify maximum body curvature and changes in lateral body length during the behavior. To connect scale morphology to flexibility, I measured the length of adjacent lateral scales from micro-computed …
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The generality of learned helplessness theory: effect of electroconvulsive shock
… were randomly assigned to one of three groups: escape, yoked-inescapable, and no shock control. Each rat in the escape group received 80 trials of unsignaled escapable shock. The escape group rats were required to perform a progressive fixed-ratio bar press to escape shock. The yoked-inescapable …
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The effects of noise exposure and genetic background on auditory-evoked behaviors in larval zebrafish
… structures and exhibit a well-studied and robust escape response when presented with a loud acoustic stimulus. I used psychophysical methods to measure auditory sensitivity and perception by observing changes in this behavioral response. In chapter 2, I describe a novel paradigm using prepulse …
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Effects of Parental Modeling on the Development of Panic-Relevant Escape and Avoidance among Adolescents: An Experimental Study Using a Biological Challenge Procedure
<p>Escape and avoidance behaviors play a prominent role in the maintenance of panic-spectrum difficulties and may also be implicated in the development of such problems. Although the current state of the literature regarding the etiology of these emotion-regulation strategies is relatively …
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Genetic Functional Dissection of the Synaptic Output of a Dual-Function Integrating Neuron
<p>Animals must vary their behavior in response to changes in their environment, but behavior also remains consistent over time. This thesis focuses on a single interneuron, RIM, and a single behavior, the reversal, to better understand how the circuits driving motor outputs accomplish the …
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Nociception and the Experience of Pain Signaling Due to Nerve Damage
… to the noxious stimulus cinnamon oil. Behavioral responses to pain were examined by looking at the characteristic escape response of the morphant and control fish. In addition, electrophysiology was performed on cranial nerve VIII (CNVIII) of morphants to understand whether pain signaling, in …
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The effects of dietary selenomethionine on the escape behaviours of Fathead Minnows
… impacts of a selenomethionine-laden diet on the escape behaviours of the Fathead Minnow. Using kinematic analysis, I observed how fish responded to various looming threats. I exposed fish to sub-chronic periods of environmentally relevant concentrations of selenium in the form of …
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Fish fins and fast-starts: Multi-level analyses reveal functional variation within median fins of bluegill sunfish.
… individual fin-rays were quantified during the escape response of bluegill sunfish, a stereotypical behavior in which the fish undergoes a rapid acceleration and displacement to avoid predation. During this behavior, timing and magnitude of angular displacement and curvatures among fin-rays also …
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Anti-Predator Responses of Squid Throughout Ontogeny
… sensory modalities and a complex array of escape behaviors have evolved as components of anti-predator responses in squids. The goals of this study include: (1) examine the role of the lateral line analogue and vision in successful predator evasion; (2) measure kinematics of escape jetting; …
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The Effects of Amphetamine Exposure on Neurodevelopment and Behavior in Early Life Stages of Danio Rerio
… milestones these fish provide. Using escape responses as a behavior model, we exposed embryos to three doses of amphetamine (10 μg/ml, 20 μg/ml, and 30 μg/ml) environmentally during the first 48 hours of development and used high-speed videography to identify escape behavior deficits …
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Dissecting the Functional Heterogeneity of Serotonergic Systems That Regulate Fear and Panic
… in the amygdala, 5-HT inhibits panic-associated escape behaviors in the perifornical hypo-thalamus region (PeFR). Yet, our understanding of how specific serotonergic networks and co-transmitters regulate these conditions, but also other aspects of innate panic (e.g., car-dioexcitation or thermal …
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A midbrain mechanism for computing escape decisions in the mouse
… and must generate appropriate behavioural responses to ensure their survival. To achieve this, they process sensory cues to correctly identify the presence and imminence of a predatory threat, and transform this information into defensive actions. However, despite much research in …
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Design, fabrication, and control of soft robots with fluidic elastomer actuators
… focusing on enabling the robot to perform rapid escape responses. The robot employs a compliant body with embedded actuators emulating the slender anatomical form of a fish. In addition, the robot has a novel fluidic actuation system that drives body motion and has all the subsystems of a …
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