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 19 of 19 for “"VEPs"”.
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Pattern Reversal Chromatic VEPs like Onsets, are unaffected by Attentional Demand
… Our findings indicate that although achromatic VEPs are modulated by attention, chromatic VEPs are more robust to attentional modulation, even when using comparable stimulus presentation modes and in the presence of a highly demanding distractor task. In addition, we found that the majority of …
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Voluntary Environmental Programs: An Examination of Program Performance and the Role of Institutional Design
… on whether Voluntary Environmental Programs (VEPs) improve firms’ environmental performance. Furthermore, the literature on VEPs theorizes that specific features contribute to program performance. This study examines the ability of Voluntary Environmental Programs to reduce emissions and the …
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Voluntary environmental programmes in the developing world: an examination of the ISO 14001 environmental management system certification in Thailand
… – that of voluntary environmental programmes (VEPs). Developed and promoted in the past few decades by policy practitioners looking to regulate environmental pollution without saddling enterprises and governments with high regulatory costs, VEPs remain vastly under-studied, especially when …
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A supervised machine-learning method for detecting steady-state visually evoked potentials for use in brain computer interfaces: A comparative assessment
… by a model for visually evoked potentials (VEPs), created by Kremlácek et al. (2002), could be used to classify steady-state visually evoked potentials (SSVEP) by frequency of stimulation. Classification of SSVEPs by stimulus frequency has application in SSVEP-based brain computer interfaces …
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Characterisation of Ovine and Human Vertebral Endplates using X-ray Microtomography: the Effects of Degeneration on Structure.
… the structure of normal and degenerative VEPs. Initially, ovine VEPs were used to investigate the effect of location along the spine on the structural properties of the VEP. Next, the network of canals within the VEP was characterised in terms of canal architecture, content and endings at …
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The effects of selective attention on chromatic processing; pattern-onset VEP responses
… and pattern-reversal visual evoked potentials (VEPs) support this. Typically in these studies VEP stimuli are displayed at one spatial location while distracter stimuli are displayed at a different spatial location. Waveform characteristics are shown to be attenuated when the VEP is unattended. …
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Top-down Modulation of the Chromatic VEP with Hypnotic Suggestion
… of achromatic stimuli. Visual evoked potentials (VEPs) recorded under such conditions agree with this pattern of activation when elicited by purely achromatic grating stimuli. However, when stimuli were chosen to preferentially activate the S-(L+M) or L-M chromatically opponent pathways, no …
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Untersuchungen zur räumlichen Tiefenwahrnehmung mit Visuell Evozierten Potentialen
… zusammenfassen: Mittels Ableitung aller VEPs über zwei Referenzelektroden war es einerseits möglich, bei einer Ableitung über Oz-Fpz Antworten großer Amplitudenhöhe zu erhalten. Durch eine Verbesserung des Signal-Rausch-Verhältnisses wurden andererseits über Oz-Pz auch noch bei geringer …
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The Effects of Altered Partial Pressures of Gas on Cognitive and Neural Function
… thresholds and altered Visual Evoked Potentials (VEPs), while Hyperoxia <br/>generated smaller more transient changes in CFF and VEPs, with a specific reduced motor <br/>Beta power, suggesting more localised oscillatory disruptions. <br/>Chapter 6 then investigates HBOT using mobile EEG during a …
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Modelling and matching : a methodology for complex ePlanning systems development
… called VirtualEnvironmental Planning Systems (VEPs). The final phase of the fieldwork illustratesthe reflection and outcomes of this M&M application, which are assessed in terms ofobservation of M&M in use and effects it caused.The theoretical contributions of the research include: the deep …
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Passive experience-dependent plasticity in mouse primary visual cortex
… for the tracking of visually evoked potentials (VEPs) in response to phase-reversing sinusoidal grating stimuli. As a given visual stimulus becomes familiar to the mouse, the VEP magnitude increases. This increase in VEP magnitude is highly selective to stimulus features, such as the orientation, …
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Protein structural and functional consequences of missense mutations in the human cancer genome
… computational tools — Variant Effect Predictors (VEPs) — to evaluate the phenotypical impact of cancer missense mutations in the entire human proteome. We detect interesting patterns and are able to distinguish to some extent the molecular mechanisms that each of the affected genes exert in …
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An electrophysiological study of chromatic processing in the human visual system. Using visual evoked potentials and electroretinograms to study cortical and retinal contributions to human trichromatic vision.
… was examined using visual evoked potentials (VEPs). These responses were elicited by chromatic spot stimuli, which were manipulated in order to selectively activate the chromatic processing system. Chromatic processing at the retinal level was examined using the electroretinograms (ERGs) for …
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Structural mechanisms of experience-dependent synaptic plasticity in the mouse visual cortex
… shifts measured with visually evoked potentials (VEPs) all occur normally in this mutant mouse as a result of 3 days of MD with only subtle differences when compared to WT mice. I conclude that, while microglia may have a role in the anatomical and functional experience-dependent cortical …
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The Effect of SSRIs on Adult Human Visual Cortex Plasticity. Do SSRIs Affect learning?
… electroretinograms and visual evoked potentials (VEPs) were measured fortnightly. The third experiment was a case study in which one participant with amblyopia completed two sessions of binocular training, one with placebo and the other with citalopram. Results: In the first experiment there was …
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Die Bestimmung visuell evozierter Potentiale bei Kindern
… und bei der monokularen Ableitung des Muster-VEPs entsprachen die Meßergebnisse der Schielpatienten denen der Normalpersonen. Zur Beurteilung der Reproduzierbarkeit der Meßergebnisse werteten wir den relativen Variationskoeffizienten aus. Dieser lag für die Latenz fast um das Zehnfache …
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Understanding experience-dependent plasticity of cellular and network activity in the mouse primary visual cortex
… in potentiation of visually-evoked potentials (VEPs) in layer 4 of V1. Due to the lack of studies regarding the cellular and network activity changes coincident with the induction of SRP, we have used calcium indicator expressing mice to visualize cellular activity across days of SRP training. …
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Exercise-Induced Modulation of Early Visual Evoked Responses: Chromatic and Achromatic Pathways
Prior studies investigating exercise-induced modulations of visual responses have beenconstrained by (1) generalized stimuli that cannot distinguish global mechanisms from pathway- specific effects, (2) stimulus-directed tasks that may conflate exercise costs with attentional effects, and (3) …
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Carotenoids, cognitive function, and brain health in pediatric populations
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01