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 “"Oculomotor control"”.
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Oculomotor Control in Patients with Parkinson's Disease
… with Parkinson’s disease, and 20 age matched controls. Stimuli consisted of ten standardized text passages first organized by Miller and Coleman. In addition, subjects followed a randomly displaced step jump target motion. Pendular nystagmus was found in all Parkinson’s subjects, with an …
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Roles Of Inhibitory Interneurons In Cerebellar Cortical Processing For Oculomotor Control
… writing software to train squirrel monkeys and control a variety of vestibulo-oculomotor tasks, characterizing the oculomotor behavioral repertoire of the squirrel monkey in comparison to that of the rhesus macaque, and developing two techniques for examining the roles of interneurons in …
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Eye movements in reading strategies : how reading strategies modulate effects of distributed processing and oculomotor control
… strategic, top-down influences on eye movement control that extend our understanding of eye guidance in reading.
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The influences of preparation and brain states on the time-course of oculomotor control in visual selection
… by physical stimulus-salience or goal-driven control. In study 1 we investigated whether observers are able to control the timing of selection and regulate the trade-off between stimulus- and goal-driven influences. Participants were instructed to make a saccade to an orientation target while …
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A Multimodal Investigation of Age Differences in Inhibitory Control
Cognitive control – a set of mental processes that allow us to perform goal-directed actions and flexibly adapt our behavior under changing circumstances – is reduced in aging. Older age is also accompanied by changes in the structure and functioning of the frontoparietal network that supports …
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The Effects of Cigarette Smoking During Acute Alcohol Intoxication
… and in combination, on several measures in a controlled laboratory environment. Principal focus is on measures of postural control, which are emphasized because of their known sensitivity to alcohol at moderate doses, and the role they have played in prior studies of individual differences in …
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In-between fixation and movement : on the generation of microsaccades and what they convey about saccade generation
… microsaccades aid both visual perception and oculomotor control. The main goal of this thesis was to improve our understanding of the implementation of microsaccade generation within the circuitry of saccade control, an unsolved issue in oculomotor research. We make a case for a model …
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Impacts of Placental Growth Factor Deficiency and of Preeclampsia on Brain Development and Function
… term memory, activity and anxiety. PE-F1 and control children aged 7-10 were assessed for cognitive functions through psychometric testing and eye tracking of saccadic eye movements. Brain structural and vascular anatomy were assessed in the same children through MRI. Pgf-/- mice displayed …
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Understanding dyslexia by measuring eye-movements during reading.
… readers have been found to display disruption in oculomotor control relative to skilled readers (Kirkby, Webster, Blythe, & Liversedge, 2008), there is a lack of research examining dyslexic parafoveal processing during reading. The experiments presented throughout this thesis examined whether …
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Toward an integrated model of sentence processing in reading
… models of lexical processing and eye movement control on the one side and models on sentence parsing and memory processes on the other. However, no model so far combines both sides with explicitly defined linking assumptions. In this thesis, a model is developed that integrates oculomotor …
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Small eye movements during fixation : the case of postsaccadic fixation and preparatory influences
… role of microsaccades in the process of fixation control. The lack of evidence for a unique role of microsaccades led to a very critical view on the importance of microsaccades. Over the last years, microsaccades moved into focus again, revealing many interactions with perception, oculomotor …
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Occulomotor Function and Locomotion in Parkinson's Disease
… 2). We further hypothesized that deficits in oculomotor control, particularly in the case of voluntary saccades, also contribute to the pathogenesis of turning difficulty since turning is normally initiated with an eye movement: Chapter 3). Finally, we hypothesized that current treatment …
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Temporal and spatial aspects of eye-movement control : from reading to scanning
… of saccades and fixations. In particular, the control of fixation durations has been widely neglected in most tasks. As a notable exception, both spatial and temporal aspects of eye-movement control have been thoroughly investigated during reading. There, the scientific discourse was dominated …