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 13 of 13 for “"AEPS"”.
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Towards artifact-free auditory evoked potentials in cochlear implant users
… (EEG), mit der auditorisch evozierte Potenziale (AEPs) gemessen werden können. EEG-Signale bestehen sowohl aus Gehirnaktivität als auch aus Artefakten. Eine vielversprechende Technik, um diese Artefakte zu detektieren, ist die unabhängige Komponentenanalyse (ICA). Die vorliegende Arbeit beinhaltet …
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Stability impact of increased DER penetration in regard to the IEEE 1547 standard in the presence of cyberadversaries
… resources (DER) into area electric power system (AEPS). First released in 2003, with multiple revisions ongoing, the most recent version from 2018 is used in this thesis to develop several use cases to assess the stability risks in the presence of cyber adversaries. The updated standard specifies …
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Temporal and spatial aspects of hearing as revealed by auditory evoked potentials
… on the generation of auditory evoked potentials (AEPs) was investigated. An optimized chirp stimulus was used, yielding responses with an improved signal-to-noise ratio. Using this stimulus, in Chap. 2 brainstem responses were shown to be not primarily evoked by stimulus onset or offset, as is …
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Hearing Sensitivity and the Effect of Sound Exposure on the Axolotl (Ambystoma Mexicanum)
… species. I recorded auditory evoked potentials (AEPs) of six axolotls at eleven frequencies (0.1, 0.25, 0.4, 0.6, 0.8, 1, 1.5, 2, 3, 4, and 6 kHz) in order to produce baseline audiograms of underwater pressure sensitivity. Individuals were then subjected to a 48-hour, 150 Hz sound exposure at …
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Independent component analysis and source analysis of auditory evoked potentials for assessment of cochlear implant users
… particular makes the detection and analysis of AEPs much harder and generates errors in the source analysis process. The artifact can be spatially filtered using Independent Component Analysis (ICA); in this research, three different ICA algorithms were compared in order to establish the more …
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Development of Auditory Sensitivity in Barn Owls (Tyto furcata pratincola)
… rates (5-90 Hz). Auditory evoked potentials (AEPs) of the auditory nerve were recorded using the auditory brainstem response (ABR). Barn owl hearing matured in a similar trend to other developing vertebrates, including kittens, budgerigars, chickens, and gerbils. The onset of hearing began …
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Towards a neurophysiological correlate of the precedence effect: from psychoacoustics to electroencephalography
… psychoacoustics and auditory evoked potentials (AEPs). Elaborate preparative psychoacoustical measurements were performed in order to investigate the perception of stimuli that evoke the precedence effect under conditions of AEP recordings, i.e., investigating adaptation effects employing …
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Cortical auditory processing of informational masking effects by target-masker similarity and stimulus uncertainty
… processing using auditory evoked potentials (AEPs) in a two-factor repeated measures paradigm. </p> <p>Method: Thirty participants were included in this cross sectional repeated measures design. Target-masker similarity between target and masker were manipulated by varying the …
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A tree-to-tree model for statistical machine translation
… and learning a mapping from parse trees to AEPs presents a challenging machine learning problem. In this thesis, we use a linear structured prediction model to solve this learning problem. A human evaluation of the AEP-based translation approach in a German-to-English task shows significant …
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Melanin as an Oto-Protective Pigment in Two Fish Species: <i> Poecilia Latipinna </i> and <i>Cyprinus Carpio </i>
… 48 h) by measuring auditory evoked potentials (AEPs). Melanin levels were associated with scale color, with black morphs having more inner ear melanin than white or golden morphs. TEM imaging showed that melanosome size varied among color morphs, with black P. <em>latipinna</em> morphs having …
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Pathophysiologie des Hörschadens bei experimenteller Pneumokokkenmeninigitis
… wurde das Muster des Hörverlusts mittels AEPs im Akutstadium und nach erfolgreicher Antibiotikatherapie charakterisiert. Die Charakteristik des Hörschadens war ähnlich wie sie bei Patienten mit Meningitis beobachtet wird: Der Inokulum-abhängige Hörschaden war in der Akutphase der …
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Manatee Sound Localization: Performance Abilities, Interaural Level Cues, and Usage of Auditory Evoked Potential Techniques to Determine Sound Conduction Pathways
… 15 and 24 kHz carriers. All subjects produced AEPs at each position the transducer was placed, however specific sound conduction pathway(s) were not identified. AEP amplitudes were usually greater with the 24 kHz carrier, however patterns between carriers at identical body positions were highly …
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A Synchronous Distributed Digital Control Architecture for High Power Converters
Power electronics applications in high power are normally large, expensive, spatially distributed systems. These systems are typically complex and have multiple functions. Due to these properties, the control algorithm and its implementation are challenging, and a different approach is needed to …