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 “"Cortical Processing"”.
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TIMING RELATIONSHIPS IN HUMAN CORTICAL PROCESSING
… cardiac cycle reflect temporal relationships in cortical processing, these studies are not conclusive. The reason is that almost all of these suggestions have been based upon the demonstration that a measure of visual processing varies with the phase of the alpha cycle or the cardiac cycle at …
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Perceived Size Modulates Cortical Processing of Objects
Empirical object recognition research indicates that objects are represented and perceived as hierarchical part-whole arrangements that vary according to bottom-up and top-down biases. An ongoing debate within object recognition research concerns whether local or global image properties are more …
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Cortical Processing of Visual Parts and Wholes
… between two distinct levels of object processing: holistic, based on global shape, and configural, based on local features and/or component parts. Empirical evidence suggests that different cortical regions may support these levels; holistic processing correlates with activation in the …
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On the role of neuronal oscillations in auditory cortical processing
… to be a specialization of left A1 for temporal processing, as signified by greater temporal precision of neuronal oscillatory alignment. Taken together these results underline the importance of neuronal oscillations in perceptual processes, and the validity of the macaque monkey as a model of …
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Roles Of Inhibitory Interneurons In Cerebellar Cortical Processing For Oculomotor Control
… was an effort to look inside the cerebellar cortical circuit during behavior to see if I could shed some light on the computations being performed. The dissertation is divided into three main sections. In the first, I present the results of preliminary work performed by myself and my …
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Pulsed out of awareness: EEG alpha oscillations represent a pulsed inhibition of ongoing cortical processing
… are ubiquitous in the brain, but their role in cortical processing remains a matter of debate. Recently, evidence has begun to accumulate in support of a role for Alpha oscillations in attention selection and control. In this thesis, a series of studies is presented investigating the role of …
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Investigations of human cortical processing of gentle touch. A study with time-resolved electro-magnetic signal analysis
… both Aβ and CT afferents in gentle touch processing.
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NEURAL MECHANISMS SUPPORTING COGNITIVE INFLUENCES ON SUPRASPINAL NOCICEPTIVE PROCESSING: INSIGHTS FROM BRAIN LESIONS
… which cognitive information influences the pain processing, most studies describe these influences in terms of the facilitation and attenuation of incoming sensory nociceptive information via descending pain control systems. However, multiple lines of evidence suggest that neural mechanisms …
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Three Dimensional Organisation of the Adult Mouse dorsal Lateral Geniculate Nucleus
… Lateral Geniculate Nucleus) is the gateway to cortical processing for visual information encoded by RGCs (retinal ganglion cells). Owing to advances in genetic manipulations, the mouse is increasingly the model system of choice for understanding the function and organisation of the visual …
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A study of pupil response components in human vision
… innervating the sphincter muscle as a result of cortical processing of specific stimulus attributes such as colour and spatial structure. Pupil measurements in patients suffering from demyelinating neurological disorders such as multiple sclerosis and optic neuritis also confirm the existence of …
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A study of pupil response components in human vision
… innervating the sphincter muscle as a result of cortical processing of specific stimulus attributes such as colour and spatial structure. Pupil measurements in patients suffering from demyelinating neurological disorders such as multiple sclerosis and optic neuritis also confirm the existence of …
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An exploration of pre-attentive visual discrimination using event-related potentials
… studies presented in this thesis examine visual cortical processing using event-related potentials. Novel methodologies have been used to elicit visual detection and discrimination components in the absence of a behavioural task. Developing paradigms in which a behavioural task is not required …
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Processing of transient stimuli by the visual system of the rat
While three decades of intensive cortical electrophysiology using a variety of sustained visual stimuli has made a significant contribution to many aspects of visual function, it has not supported the existence of intracortical circuit operations in cortical processing. This study investigated …
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Improvements on mice tactile virtual reality system for electrophysiological experiments
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Optical imaging of dendritic spikes in apical oblique dendrites of layer 5 pyramidal neurons
… While there is a wealth of information about cortical processing in apical tuft and basal dendrites, the functional role of apical oblique dendrites of layer 5 pyramidal neurons (L5PNs) are less understood. In this thesis, I aim to understand to functional role of thin apical oblique dendrites …
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Optical imaging of dendritic spikes in apical oblique dendrites of layer 5 pyramidal neurons
… While there is a wealth of information about cortical processing in apical tuft and basal dendrites, the functional role of apical oblique dendrites of layer 5 pyramidal neurons (L5PNs) are less understood. In this thesis, I aim to understand to functional role of thin apical oblique dendrites …
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Behavioral Strategies and Neural Mechanisms of Dynamic Foraging
… be used in the task, it is unclear how neural processing of reward, value and action information might change across different behavioral states. This thesis develops techniques for behavioral and neural dissection of cortical contributions to dynamic foraging behavior. By a combination of …
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Subcortical Inputs Governing Cortical Network Activity
… characterizes the nature and mechanisms of awake cortical network dynamics, as well as the sources of sensory inputs in different cortical layers of the rat somatosensory system. Mammalian brains generate internal activity independent of environmental stimuli. Internally generated states may bring …
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Cortical auditory processing of informational masking effects by target-masker similarity and stimulus uncertainty
… at both early and late stages of auditory 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 …