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 17 of 17 for “"Stimulus properties"”.
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Discriminative stimulus properties of 3-substituent rimonabant analogs
… pyrazole core conferred agonist-like properties in the tetrad. Interestingly, these effects were present in CB1 -/- mice, and were not reversed by rimonabant in wild-type mice. The present study evaluated two novel 3-substituent rimonabant analogs, O-6629 and O-6658 in the tetrad and …
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The Discriminative Stimulus Properties of the Atypical Antipsychotic Clozapine in C57BL/6 Mice
Serotonin and α1 adrenergic receptor antagonism may contribute to atypical antipsychotic drug effects. Clozapine (2.5 mg/kg) drug discrimination in C57BL/6 mice may selectively screen atypical antipsychotic drugs. Previous data show that the atypical antipsychotics olanzapine, risperidone, …
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EEG and fMRI studies of the effects of stimulus properties on the control of attention
In this dissertation the effects of variations in stimulus properties and CTOA, in auditory attention tasks were explored using recently developed approaches to EEG analysis including LIMO. The last experiment was structured using information theory, designing an effective experiment. Four studies …
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The Effects of Pre-Trial Event Stimulus Properties on Timing in the Peak Interval Procedure
… signal. Although the effects of during-trial stimulus properties—temporal location, duration, and salience—have been previously reported, no research exists on how before-trial stimulus properties influence the extent of shifts in middle time. In the present study, we manipulated within …
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Masking in Central Visual Field Under a Variety of Temporal and Spatial Configurations
For over a century, visual maskingwhere one stimulus reduces the visibility of another stimulushas been used as a powerful tool to explore the visual system. Two major forms have emerged: backward masking and common onset masking. These two forms, which are characterized by the temporal properties …
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The interaction of psychomotor stimulants and sedative hypnotics in the conditioned taste aversion paradigm
… related and endowed with overlapping stimulus properties as reflected in the pre-exposure CTA paradigm. These results demonstrated that both pairs of drugs were functionally related and endowed with overlapping but non-identical stimulus properties. That is, cocaine less effectively …
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THE EFFECTS OF WORKING MEMORY TRAINING ON THE FUNCTIONAL SPECIALIZATION OF THE PREFRONTAL CORTEX
… Several studies have identified differences in stimulus property selectivity along the dorsal-ventral axis. Additionally, a proposed anterior-posterior axis of selectivity where anterior regions are more selective to task rules and posterior areas are more selective to stimulus properties has …
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Discriminative Stimulus Effects of Putative Antipsychotic Drugs
… attempted to further explore the discriminative stimulus properties of antipsychotic drugs, by establishing the typical antipsychotic drug chlorpromazine, and the atypical antipsychotic drug clozapine as discriminative stimulus in two different groups of rats. The rats trained to discriminate …
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Mapping multivariate measures of brain response onto stimulus information during emotional face classification
… and other [60] attempts to parametrically relate stimulus properties to measurements of brain activation are difficult to interpret. In this thesis I consider a blind data–driven model of brain response. Statistically independent model parameters are found to minimize the expectation of an …
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The effects of social influence on neonatal approach latencies of domestic chicks (Gallus domesticus)
… strength. It was further suggested that certain stimulus properties of the imprinting object that is used during imprinting training may be important in determining whether or not imprinting will occur in chicks that have been raised in the presence of peers.
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Rod-cone interaction through flicker detection and the course of critical flicker frequency during dark adaptation
… adaptation. Also, measurements were made of the stimulus intensity necessary to just perceive flicker for a wide range of frequencies. The resulting data clearly demonstrate a rod-cone interaction causing a suppression of the threshold. Our results reproduce the familiar rod and cone branches of …
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The perception and cognition of emotion from motion
… and experienced affect. In a search for possible stimulus properties that would act as correlates for the dimensions, it emerged that arousal could be accounted for by movement speed while valence was related to phase relations between joints in the displays. In the third experiment we manipulated …
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Behavioral Contrast and Alternative Response Key Availability
… previously ambiguous findings. The influence of stimulus properties and the location of discriminative stimuli on the production of behavioral contrast was examined. Procedure. Pigeons in Group 1 were exposed to a two-key procedure in which one key served as the operandum and the other key …
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Differences in image properties across facial expressions: effects on perceived contrast, stimulus efficacy and oculomotor responses
… faces differ in terms of the statistical image properties that define facial stimuli (their Fourier amplitude spectra), and the extent that such natural differences in image properties of expressions are influenced under experimental conditions. The present thesis contributes findings to the …
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Confidence and feedback in visual perceptual learning
… perceptual learning is highly specific to the stimulus properties used during training is being challenged by accumulating evidence of transfer under specific conditions. Perceptual learning in the adult brain may result from an element of cortical reorganisation at a perceptual level or a …