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 37 for “"superior colliculus"”.
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Structure and organization of the superior colliculus of the rat
Contains fulltext : mmubn000001_111696119.pdf (Publisher’s version ) (Open Access)
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Heterogeneity in the Pitx2ON Population in the Mouse Superior Colliculus
The Superior Colliculus (SC) is a conserved midbrain region essential for sensorimotor integration. Pitx2ON neurons, a glutamatergic population in the intermediate SC, are known to drive spatially oriented head movements. These neurons project to various regions, including tecto-spinal systems that …
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The sentinel hypothesis : a role for the mammalian superior colliculus
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Psychology, 1980.
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Genetic dissection of circuits underlying the modular structure of the Superior Colliculus
… that guides such goal-oriented movements is the superior colliculus (SC), an evolutionary conserved structure of the midbrain. While several lines of research in different model organisms have confirmed that the SC contributes to the initiation of orienting movements, how functionally distinct …
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Radial glia in the developing superior colliculus : evidence for a midline barrier
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Brain and Cognitive Sciences, 1991.
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Eye-opening and control of visual synapse development in the mouse superior colliculus
The mammalian superior colliculus (SC) coordinates visual, somatosensory, and auditory stimuli to guide animal behavior. The superficial layers (sSC) receive visual information via two major afferent projections: 1) A direct retinal projection and 2) an indirect projection from Layer V visual …
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Models of Neurons in the Superior Colliculus and Unsupervised Learning of Parameters From Time Series
In addition, this research presents a biologically feasible unsupervised learning algorithm for learning parameter values from transiently presented stimuli. The algorithm is used to learn temporal relationships between stimuli and amplitudes.
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Eye-opening dependent elaboration and refinement of the cortical projection to the superficial superior colliculus in rats
The superior colliculus (SC) is a multi-layered midbrain structure responsible for multimodal integration and orienting behavior in mammals. The superficial layers of the SC (sSC) receive direct visual input from retinal ganglion cells (RGC) as well as input from pyramidal cells in layer V of the …
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Low-frequency activity in the primate superior colliculus activates a head turning synergy: evidence using neck EMG recordings
… bursts within the deeper layers of the primate superior colliculus (dSC) encode desired eye-head gaze shifts. In addition, many dSC neurons emit earlier low-frequency activity. We hypothesized that low-frequency activity in dSC neurons contributes to priming and orienting the head in advance of …
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The role of <em>Pax7</em> in the formation of the superior colliculus and the vertebrate visual system
… of Pax7 in formation and maturation of the mouse superior colliculus, an important brain region associated with topographic visual input and the capacity to evoke appropriate visuomotor responses to environmental stimuli. The research performed was explicitly targeted at understanding the …
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Perceptual and cognitive influences on decision making and the activity of single neurons in the superior colliculus and frontal eye field
Responding to changes in our environment is a fundamental component of our humanity. On a daily basis we are faced with innumerable decisions based on highly salient information: Which bottle is the shampoo? Which fruit should I select for consumption? Should I move left or right to avoid hitting …
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Automated, highly scalable RNA-seq analysis
… investigates transcriptome regulation in the superior colliculus with prolonged eye closure. We show that while the colliculus undergoes long term anatomical changes with light deprivation, the gene expression in the colliculus is unchanged, barring a module of genes involved in energy …
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Studies on the mode of CRF action in the optic tectum of the African Clawed Frog, Xenopus laevis
… the behavioral response to visual threats is the superior colliculus of the brain, an area involved in subconscious visual detection and response. Previous work in our lab showed that optic tectum (OT), the homolog of superior colliculus in non-mammalian vertebrates, contributes to decision making …
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EphB: Ephrin-B Bidirectional Signaling in Retinocollicular Mapping
… of the optic nerve and termination in the superior colliculus is critical for integrating both the visual field and head orientation to mediate appropriate eye movement. Expression of EphB receptor tyrosine kinases and ephrin-B ligands in the visual system signify the potential role for …
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THE EFFECT OF EARLY SENSORY DEPRIVATION ON THE TEMPORAL PROFILE OF MULTISENSORY INTEGRATION
… is the mammalian midbrain structure superior colliculus (SC). SC neurons are capable of responding to cross-modal inputs with an elevated number of neuronal spikes, e.g. brief flashes and noise bursts, in comparison to either modality-specific component. However, such capability is …
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Towards a Neural Measure of Value and the Modelling of Choice in Strategic Games
… value is measured in the spike activity of the Superior Colliculus (SC) while monkeys play a saccade version of matching pennies. We find SC activity predicts upcoming choices and is influenced by the history of events in the game, correlating with a behaviourally-established model of learning, …
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FUNCTIONAL ROLES OF MIDBRAIN DOPAMINE NEURONS IN ASSOCIATIVE LEARNING
… and that this signal likely derives from the superior colliculus (SC), a subcortical structure lacking the capacity for fine feature discrimination but specializes in detecting and locating salient sensory events. Support for this latter view comes from recent anatomical evidence for a …
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Neuronal PAS Domain 1 Protein and Its Hypothetical Relationship to Autism
… cortex, hippocampus, thalamus, hypothalamus and superior colliculus. Subsequent immunohistochemical staining assays employing antibodies to NPAS1 revealed an expression pattern largely restricted to inhibitory neurons in the aforementioned brain regions, as well as localized expression in the …
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