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 36 for “"Behavioural experiments"”.
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Representing meaning: a feature-based model of object and action words
… from this model are tested in a series of behavioural experiments designed to test two main questions: whether similarity measures based on speaker- generated features can predict fine-grained semantic similarity effects, and whether the predictive quality of the model is comparable for …
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Recognition in burying beetles (Nicrophorus spp., Silphidae, Coleoptera)
… the most in males and females of a species. Behavioural experiments were performed using N. vespilloides to determine if one or more of these chemicals were used by the individuals themselves for identification.
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Single-System and Dual-Process Accounts of Explicit and Implicit Memory
… systems or a single system. There is much behavioural evidence for multiple-systems and dual-process accounts, mainly focusing on studies of recognition memory and long-term repetition priming. However, experimental results and mathematical modelling have shown the ability of a …
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Aspects of the sensitivity of juvenile Jasus lalandii and decapod excitable tissue to the water soluble fraction of crude oil
… Jasus lalandii ranged from 3,7 to 5,9 mg l⁻¹. 3. Behavioural experiments appear to provide a quick and convenient approach for estimating the relative toxicity of the WSF of crude oil. 4. The major effect of the WSF of crude oil on Jasus heart beat rate was bradycardia. Furthermore, the greater …
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Life history implications of the mother's choice for a larval habitat. Niche choice and niche conformance in the fire salamander, Salamandra salamandra
… software (Amphibian and Reptile Wildbook) and behavioural experiments in the field and in the laboratory. First, I introduce the mechanisms of niche choice, niche conformance and niche construction, give some general background on amphibian declines and provide information on the study species, …
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Towards a psychological science of neural network behaviour
… neural networks. First, we will introduce simple behavioural experiments to shed light on the phenomenon of catastrophic forgetting. In particular, through the use of synthetic parameterisable stimuli, we’ll investigate the role of task similarity and task ordering in a continual learning setup. …
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Mechanisms underlying chasing behaviour of male blowflies
… the chasing virtual fly were derived from behavioural experiments: (i) The retinal size of the target controls the fly's forward speed and, thus, indirectly its distance to the target. (ii) A smooth pursuit system uses the retinal position of the target to regulate the fly's flight …
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Visual navigation of a virtual blowfly
… the responses of an exemplary output neuron to behaviourally relevant stimulation. Based on the responses of this neuron, a simple controller is shown to be able to control the flight direction of a virtual fly simulated in a closed control loop. The ability of this simulated system to avoid the …
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Hide and seek : a multidisciplinary study on the ecological success of an estuarine dweller
… role in the estuarine food web. Here, I applied behavioural experiments using a novel method to quantify pigment cover (PiC) to study background matching in Crangon crangon, and assessed the application of metabarcoding to define its trophic ecology in six European estuaries. Results indicate …
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An Electrophysiological Examination of Visuomotor Activity Elicited by Visual Object Affordances
A wide literature of predominantly behavioural experiments that use Stimulus Response Compatibility (SRC) have suggested that visual action information such as object affordance yields rapid and concurrent activation of visual and motor brain areas, but has rarely provided direct evidence for this …
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The ecology of venom use in the Javan Slow Loris (Nycticebus Javanicus) and its implications for conservation
… Cipaganti in West Java, Indonesia. I collected behavioural observations including feeding and ranging data, examined faecal samples for diet remains and parasites, and regularly checked animals for ectoparasites. I also captured arthropods over five months. I monitored the coexistence with …
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Challenging thoughts for challenging tasks: Investigating the effectiveness of a cognitive behavioural intervention delivered by school staff for secondary pupils experiencing anxiety about their schoolwork
… therapeutic approaches, such as cognitive behavioural therapy (CBT), highlights the benefits of collaboration with school staff, alongside the challenges posed by limited resources, training quality, facilitator competence and programme fidelity. A mixed methods design over two sequential …
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Pollinator behaviour and the evolutionary genetics of petal surface texture in the Solanaceae
… Phylogenetic, molecular developmental and bee behavioural approaches were used to develop an integrated understanding of the frequency, mechanisms and possible causes of conical cell losses. We provide evidence of multiple independent losses of conical petal cells in Solanum. We find that two …
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Assessing functional links between speech production and perception in multilingual speakers
… The data in this thesis comes from four behavioural experiments. The first experiment is a categorical perception study comparing the midpoint of categorical perceptual boundaries to the midpoint of vowel production distributions in English and Spanish within individual Spanish/English …
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Perspectives from above: The role of altitude in bumblebee spatial orientation and navigation
… objects instead of ground- level views. However, behavioural experiments showed that the bees rather used lower altitudes to return home. Lastly, the localisation of a goal, e.g. a food source, in three dimensions showed that while bees are able to localise a goal, they are less precise than in …
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Effects of Temporal Expectation on Complex Decision Making
… complex decision making being self evident, no experiments explicitly attempt to understand this interdependence. If the theories that have emerged from both domains are to generalise to complex interactive behaviour, the effects of dynamic context on complex decisions must be considered. I …
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Building and characterising the neuropeptidergic connectome of Caenorhabditis elegans
… two of them using microscopy techniques and behavioural experiments. I then put this network in the overall context of the nervous system structure and attempted to understand from a computational perspective how neuropeptides interact with other neuromodulatory connections and with the …
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Sensorimotor learning under switching dynamics
… memories without interference. Here we combine behavioural experiments and computational modelling to investigate how the sensorimotor system uses contextual information to create, update and recall motor memories. We first examine the role of muscle co-contraction in the learning of novel …
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Looking for a Simplicity Principle in the Perception of Human Walking Motion
… as shortness of representation length, and behavioural experiments attempt to show that the shortest representations correspond best to perception. In this study we apply coding theory to marker-based human walking motion. We compare two representation schemes. The first is based on marker …
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Learning the meaning of new words: Behavioural and neuroimaging evidence
… using new lexical representations. A number of behavioural experiments and one final fMRI study were conducted. Experiments 1-2 investigated effects of context variability (number of different contexts) and semantic richness (number and type of semantic features) on word learning in a second …
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