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 20 of 25 for “"sensory organs"”.
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Glia Are Required For Sensory Neuron Morphology And Function In Caenorhabditis elegans
… development and function we have studied the sensory organs of Caenorhabditis elegans because their anatomy and function are well-characterized. Specifically, we have focused on two aspects of sensory organs: how do glia interact with neurons to enable proper development and function and how …
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Roosting Time A Collection of Short Stories.
… chaotic, meaningless upon the five human sensory organs? Fiction attempts to encapsulate certain moments, and although occasionally the moments recorded may appear to approximate reality, reality is elusive and chaotic. A writer attempts to weave from chaos a pattern. To do this he must …
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Zebrafish Posterior Lateral Line Organogenesis Regulation by Notch Signaling
… the self‐organization of rosette‐shaped sensory organs in the zebrafish lateral line system. Notch cell autonomously induces apical constriction and cell adhesion downstream of Fgf signaling and organizes lateral line organs into rosettes independent of patterning cues normally provided …
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An Analysis of Down Syndrome Children and the Importance of Their Cognitive and Communicative Development
… of stimuli comes streaming in through the sensory organs. Their brain grows less, there are fewer neurons in some parts, and neurons establish less synaptic connections because of the fewer alterations in dendrite spines and axonal extensions that take longer (Bullock, Bennett, Johnston, …
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The Roles of daf-6 and Cell-Cell Interactions in Sensory Organ Morphogenesis
<p>The development of multicellular organs depends on the regulation of cell shape, position, and orientation. The genetic regulation of these morphogenetic processes is poorly understood. As a model for organ morphogenesis, I studied the development of the Caenorhabditis elegans amphid sensory …
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The Effect of Cervical Muscle Fatigue on Postural Stability during Immersion Virtual Reality
… and proprioception afferent input. Erroneous sensory information from defective sensory organs may cause a person to experience feelings of lightheadedness, spinning and whirling sensations, and difficulty in maintaining straight posture. Few studies have examined the synergy between cervical …
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The influence of ploidy level on the hearing sensitivity of the sister species Hyla chrysoscelis and Hyla versicolor
… of larger hair cell nuclei in the auditory sensory organs of H versicolor. Tuning at the midbrain was identical between the two species, suggesting that increased cell size biases the tuning of hair cell distortions more than their spectral sensitivity. Alternatively, a compensatory …
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Functional studies of <i>Ci-Gsx</i> gene in the developing central nervous system of <i>Ciona intestinalis</i>
… cascade controlling early specification of Ciona sensory organs and represent a first evidence of a potential implication of a Gsx ParaHox. gene in this process, thus opening new perspectives OD the role. still controversial. of Gsx gene in the ancestor of bilaterians.
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Prediction and perception in the multisensory brain: Supramodal and modality-specific mechanisms of sensory predictions across cortical hierarchies
To enable sensory perception, the brain evolved a hierarchy of cortices for each sense. A challenge in neuroscience is to characterise commonalities and differences in the representations and mechanisms operating within and controlling neural signalling between cortical hierarchies dedicated to …
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Flamingo predation impacts on benthic communities: effects of spatial gradients
… may be reduced through the use of sophisticated sensory organs to detect accessible prey deep within the sediment. Overall, the study has shown that the impact of flamingo predation on a spatial gradient is small and site specific. However, the study highlights the need for further research on …
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Development of a porous piezoresistive material and its applications to underwater pressure sensors and tactile sensors
… array of pressure sensors in their lateral line sensory organs that can detect minute pressure differences. Similarly, by measuring pressure variations using an engineered pressure-sensor array on the surface of an UUV, this project hopes to aid UUVs in the identification and location of …
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INTEGRATION OF INTRA-AUDITORY MODALITIES FOR THE ENHANCEMENT OF MOTOR PERFORMANCE AND COORDINATION IN A CONSTANT FORCE PRODUCTION TASK
… system (CNS) integrates multiple sources of sensory information and coordinates multiple effectors in human movement. Much attention has been directed to the integration of multiple modalities between sensory organs (e.g., visual and auditory, visual and tactile, or visual and proprioceptor), …
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Rewiring neural conduits : engineering neuromuscular tissues for bidirectional neuroprosthetic interfacing
… disrupts neuromuscular architecture, discards sensory organs and provides no anatomical or prosthetic replacement. This precludes the generation of afferent sensory feedback, which is critical for sensory integration, motor planning, peripheral and central neurological health, and myoelectric …
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A human analog for benchmarking vestibular tests in a roto-tilt chair
… the anatomy and physiology of the peripheral sensory organs of the vestibular system, as well as some diagnostic tests of the inner ear. Using previous work in vestibular modeling and prosthetics development, this thesis then brings focus to the development and testing of an experimental model …
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Molecular Mechanisms Underlying Stress-Induced Glia Remodeling in the Nematode C. Elegans
… nervous system. Such alterations are common in sensory organs, composed of sensory neurons and glia, which initially detect environmental stress. The molecular mechanisms driving cell shape remodeling following environmental stress and the effects of such remodeling on animal survival are not …
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Sensory Organ Morphogenesis in Caenorhabditis Elegans
<p>Sensory organs are the gates through which information flows into the nervous system. In most animals, such organs consist of sensory neurons, which can transform stimuli into changes in their membrane potential, and glial cells, which establish a niche important for the morphogenesis and …
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EXPRESSION AND MISEXPRESSION OF THE MIR-183 FAMILY IN THE DEVELOPING HEARING ORGAN OF THE CHICKEN
… required for the proper maturation of primary sensory cells in both the inner ear and the retina in mammals. The miR-183 family shows dynamic longitudinal and radial gradients in the developing mouse cochlea, which raises a question whether the microRNA levels play a role in specifying hair …
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Subcortical Inputs Governing Cortical Network Activity
Sensory information is represented in cortex by cascades of excitation, the patterns of which are constrained and biased by anatomical connections between neurons. Additionally, in the living animal, functional connectivity is dynamically adjusted by internally generated background activity, which …
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Constructing Vision: László Moholy-Nagy's Partiturskizze zu einer mechanischen Exzentrik, Experiments in Higher Spatial Dimensions
… world differently, augmenting and training the sensory organs to visualize higher dimensions of space, essentially to see what does not appear, what is apparently invisible. Through his work with light and movement, which took many forms, painting, photography, film, kinetic sculpture, and …
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