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 18 of 18 for “"olfactory stimuli"”.
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Do Olfactory Stimuli Increase Presence During Exposure Tasks: A Comparative Study
… could be identified that examined the effect of olfactory stimuli upon the patient*s sense of presence during exposure tasks. In this study, the effect of olfactory stimuli on subject*s sense of presence was assessed via psychophysiological response (electrodermal activity), visual scanning, and …
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The Effects of Olfactory Stimuli on the Behavior of the Far Eastern/Amur Leopard (<i>Panthera pardus orientalis</i>) in Captivity
… of leopards in captivity, and what effects olfactory stimuli may have on those activity patterns. Behaviors were observed through surveillance systems located around their enclosure and scored using an ethogram, and proportions of behaviors shown were calculated for each day, and by …
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Technological interventions to detect, communicate and prevent sexual assault
… and prevention of assault. We also explore olfactory stimuli as a potential means to prevent sexual assault in real-time. We present three technological interventions which can seamlessly integrate with existing clothing to respond to initial signs of assault like forced disrobing. The …
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Human Olfactory Perception: A Literature Review
… cognitive and affective responses to olfactory stimuli even when the stimuli were perceived unconsciously. The mechanism by which humans perceive these signals is unclear; there is much debate as to whether the vomeronasal organ is functional in humans. Regardless of the mechanism of …
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Motivational State-Dependent Renewal of Operant Responding under Food and Water Deprivation States
… phenomena have utilized distinct exteroceptive stimuli as context (e.g., auditory, visual, and/or olfactory stimuli). However, there is growing literature on the role of interoceptive stimuli (e.g., deprivation and drug states) in the recovery of extinguished responding. Recent studies have …
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Reproductive Biology of Alligator Snapping Turtles: Behavior, Reproductive Investment, and Nest Predation
… the role of soil disturbance and turtle olfactory stimuli in raccoon responses to artificially constructed alligator snapping turtle nests. Raccoons primarily used soil disturbance cues to detect artificial nests; however, after being detected nests with soil disturbance were more likely …
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Interaction Between Insects and Apple (Malus X Domestica Borkh.): Insect Behavior, Genotypic Preference, and Plant Phenolics With Emphasis on Japanese Beetle (Popillia Japonica Newman)
… of quercitrin, a feeding stimulant. Olfactory stimuli of JB was evaluated with a Y-tube olfactometer. Beetles preferred the side of the Y-tube containing leaf tissue of apple or Virginia creeper over the side with no leaf. Beetles did not choose one plant species over the other. Bias …
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Physiological Responses & Coping Strategies of Sensory Defensive Adults
… (EDA) responses to auditory, tactile and olfactory stimuli. Discussion: Overall, high SD group had higher EDA responses, but not all were statistically significant. The high SD group had significantly higher EDA (p < 0.1) responses when the nuk brush and lawnmower were administered. The …
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TRACKING PLANT VIRUS INFECTIONS THROUGH MULTIPLE DIMENSIONS: A SEARCH FOR SOURCES OF NONPERSISTENT VIRUS VECTORS AND RESERVOIRS AT LOCAL AND REGIONAL SCALES
… fields as well, such as modification of the olfactory stimuli detectable by airborne aphids. I also inventoried weed species within fields and assayed samples for virus content, to investigate weed cover contributions to vector behavior or as host to virus or vector. Using land cover data …
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Olfactory short term memory: understanding perceptual representations of odours and the role of encoding strategies in working memory.
… is a paucity of research examining specific olfactory working memory ability, and there are equivocal findings concerning the availability of an internal representation to consciousness and the extent and influence of verbal coding. This thesis first describes the creation of a comprehensive …
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Modulation and Ligand Selectivity of Mammalian Odorant Receptors
… 1000 in mouse. Central to the question of how olfactory stimuli are represented at the peripheral level is defining the ligand selectivity and activity regulation of ORs.</p><p>Processing of chemosensory signals in the brain is dynamically regulated in part by an animal’s physiological state. …
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Plant-insect interactions between female dogwood borer and apple
… dogwood borer appear well equipped to perceive olfactory stimuli, based on the types and number of sensilla present. Coupled gas chromatography and electroantennogram detection (GC-EAD) analyses of headspace collections from damaged and undamaged tissues from apple and dogwood trees were …
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Odorant receptors: regulation, signaling, and expression
Olfactory signal transduction is initiated by binding of odorous ligands to G protein-coupled odorant receptors, resulting in the activation of G protein and second messengers that culminates in the generation of action potentials to relay this signal to the brain for odor recognition. This …
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Host-seeking behaviour in the malaria vector Anopheles Gambiae
… An. gambiae when presented with host-associated stimuli. In a constant flow of carbon dioxide and human-derived volatiles, mosquitoes were most active early in the night, suggesting a periodic responsiveness to olfactory stimuli, priming them to respond to potential hosts early in the night. …
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Dopaminergic Modulation Shapes Sensorimotor Processing in the Drosophila Mushroom Body
… is a prominent neural structure essential for olfactory learning. Dopaminergic neurons convey salient information about reward and punishment to the mushroom body in order to adjust synaptic connectivity between Kenyon cells, the neurons representing olfactory stimuli, and the mushroom body …
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Odor intensity learning in Drosophila
… different concentrations of the same odor. Olfactory associative learning has been described as a pairing between odorant and electric shock and since then, most of the experiments conducted in this respect have largely neglected the dual properties of odors: quality and intensity. For …
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Role of the ventromedial hypothalamus in control of innate defensive behaviours
… is modulated in vivo in response to predator stimuli. I began the project by quantifying mouse defensive behaviours in response to olfactory and auditory predator cues, as well as to the optogenetic activation of SF1+ neurons. I then questioned whether there was heterogeneity within the …
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HIV-1 INFECTION OF NEURAL STEM CELLS RESULTS IN COGNITIVE DEFICITS THROUGH ADULT NEUROGENIC MODULATION
… into their respective circuitries to modulate olfactory stimuli and aid in memory acquisition/consolidation processes. Most of previous studies on the role of HIV-1 in neurogenesis focused on single viral proteins rather than the entire integrated proviral genome, and did not correlate these …