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Optimization Of A Hardware/Software Coprocessing Platform For Eeg Eyeblink Detection And Removal, Matthew Alan Chaudhuri

Theses

The feasibility of implementing a real-time system for removing eyeblink artifacts from electroencephalogram (EEG) recordings utilizing a hardware/software coprocessing platform was investigated. A software based wavelet and independent component analysis (ICA) eyeblink detection and removal process was extended to enable variation in its processing parameters. Exploiting the efficiency of hardware and the reconfigurability of software, it was ported to a field programmable gate array (FPGA) development platform which was found to be capable of implementing the revised algorithm, although not in real-time. The implemented hardware and software solution was applied to a collection of both simulated and clinically acquired EEG …

Bio-Signal Analysis In Fatigue And Cancer Related Fatigue;Weakening Of Corticomuscular Functional Coupling, Qi Yang

ETD Archive

Fatigue is a common experience that reduces productivity and increases chance of injury, and has been reported as one of most common symptoms with greatest impact on quality-of-life parameters in cancer patients. Neural mechanisms behind fatigue and cancer related fatigue (CRF) are not well known. Recent research has shown dissociation between changes in brain and muscle signals during voluntary muscle fatigue, which may suggest weakening of functional corticomuscular coupling (fCMC). However, this weakening of brain-muscle coupling has never been directly evaluated. More important information could be gained if fCMC is directly detected during fatigue because a voluntary muscle contraction depends …

Examining Audiovisual Integration Of Visually Presented Letters And Their Auditory Letter Names Using Electroencephalography (Eeg), Allison J.D. Andres

Digitized Theses

Audiovisual integration is an important process in human perception. However, it is

unclear whether auditory and visual stimuli are integrated during primary sensory processing, or following independent processing in their respective sensory cortices. This study examined 16 adult participants’ responses to simultaneously presented congruent and incongruent visual letters and auditory letter names using electroencephalography (EEG). Auditorystimuliwerepresentedinanunattendedoddballparadigm,usingthe mismatch negativity (MMN) event-related potential (ERP) component as an indicator of primary auditory processing. Participants also identified whether or not visual letters were vowels using a key press. No difference was found in the MMN across congruent and incongruent triais. However, differences in the …

The Relationships Among Age, Physical Activity, And Working Memory, Ellen M. Carpenter

Psychology Theses & Dissertations

As our population ages, determining exogenous factors that may offset cognitive decline become increasingly important. The primary goal of the present study was to determine whether older individuals who engage in regular physical activity demonstrate superior working memory performance relative to older sedentary individuals. Forty young (20 active, 20 sedentary) and forty older (20 active, 20 sedentary) individuals engaged in cognitive measures of information processing speed, inhibitory function, and verbal and visuospatial working memory. Age differences in recall were found for verbal and visuospatial span tasks, as well as for recall reaction time on verbal and visuospatial n-back tasks, and …