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 9 of 9 for “"signal complexity"”.
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It’s Not Simple: Brain Signal Complexity as an Index of Neural Information Processing Described via Music Perception, Complexity and Reward
… higher cognition produces complex brain signals with information at multiple timescales. The present body of work represents an effort to demonstrate that brain signal complexity can be an indicator of the information integration in the brain that supports cognition and behaviour. Study 1 …
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Exploring Neural Activities in the Prefrontal Cortex of Fragile X Syndrome Mouse Models Using Electroencephalography
… slowing, cross-frequency coupling, and reduced signal complexity, suggesting potential translational biomarkers of network dysfunction. However, the extent to which these signatures are conserved in preclinical models—especially in female mice—remains unclear. This thesis aimed to characterize …
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Adaptive sampling for multiscale environmental sensor networks
… activity, to include periods of elevated signal complexity, which is when dense data collection is most needed. Under this new definition, an indicator for hot moment identification is developed. Using this indicator as a performance metric, a family of frequency-based adaptive sampling …
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Aplicação da entropia de permutação A sinais EEG durante estimulação dinâmica de cenário virtual
… a dynamic visual stimulus (ED). One form of EEG signal analysis is the calculation of signal entropy, which measures the degree of complexity about a particular message or signal. This study consisted in the use of Permutation Entropy (PE) for the analysis of the EEG records obtained during ED …
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Understanding Brain Signal Variability and Why it Matters in Maturation from Childhood to Adulthood
Blood oxygen level dependent (BOLD) signal variability characterizes the inherently time-varying features of brain signal and has provided complementary perspectives into aging research. As a strong age predictor, age-related brain patterns that are associated with BOLD SD barely overlap with those …
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Tracking brain dynamics across transitions of consciousness
… compression algorithm is employed to compute signal complexity and symbolic mutual information to assess information integration. An intriguing dissociation between responsiveness and drug level in blood during sedation is revealed: responsiveness is best predicted by the temporal complexity …
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SOCIAL ENVIRONMENT MODULATES THE FUNCTION AND NEUROENDOCRINE REGULATION OF ELECTROCOMMUNICATION SIGNALS ACROSS SPECIES OF APTERONOTID FISHES
Because communication is inherently social, signals and social behavior should coevolve. Physiological regulation of signal production and perception should also be linked to social evolution. South American weakly electric knifefishes are an excellent system for investigating neuroendocrine …
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Seismic discontinuities and order estimation using wavelets : a receiver function approach
… were obtained for JIZ and TYM, respectively. Signal complexity in the image stacks prevented the determination of order estimates in either Pds phase for TKA and TMR. Order and scale estimates for the 410km discontinuity range between 0.325-0.450, and 18-35, respectively. Estimates for the …
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The evolution of exploitation through mimicry
… aim of this thesis is to propose that mimicry of signals in human communication is an effective behavioural strategy for exploiting social systems. Detection of mimicry may consequently have evolved as a counterstrategy, creating a competitive co-evolutionary relationship between signaller and …