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.
Results
Showing 1 to 20 of 188 for “"sensory information"”.
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A Study of the Transmission of Sensory Information in the Cat Spinal Cord
… and lateral funiculus of the cat spinal cord. Information obtained from human subjects with spinal lesions had indicated that the main impairment following dorsal column transection was one of tactile discrimination and position sense, whereas the major impairments following lateral column …
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The effects of sensory information on anxiety associated with insertion of an intrauterine device
… receiving routine counseling with sensation information prior to the insertion of an intrauterine device. Spielberger's (1966) state-trait anxiety theory was used as the theoretical framework for the study. The study was conducted in four family planning clinics located throughout a large …
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Use of sensory information by cerambycids and their natural enemies to locate resources and mates
The purpose of this dissertation is to extend knowledge of the cues and signals that cerambycids and their natural enemies use to locate mates and resources. Many species of longhorned beetles (Coleoptera: Cerambycidae) prefer to feed in trees that are stressed, weakened, or in the process of …
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On the use and representation of sensory information of the arm by robots and humans
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Numerical analysis of bat noseleaf dynamics and its impact on the encoding of sensory information
… in the biosonar system where direction-dependent information gets encoded. These baffle structures in bats unlike the engineering systems like megaphones have complex static geometry and can undergo fast deformations at the time of pulse emission/reception. However, the functional significance of …
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A vibrotactile display design for the feedback of external prosthesis sensory information to the amputee wearer
This thesis documents the development of a vibrotactile display to be incorporated into a powered ankle-foot prosthesis. Although existing devices have addressed the need for tactile and proprioceptive feedback in external prostheses, there has not yet been an attempt to develop and clinically …
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Neocortical Layer 4 to Layer 2/3 Sensory Information Processing Investigated with Digital-Light-Projection Neuronal Photostimulation
… these circuits has been well characterized, the information processing and coding performed by these ensembles is poorly understood. A key component of this investigation concerns the transmission and transformation of the neuronal representation from one neuronal pool to the next. In the rodent …
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Swayed by sound: sonic guidance as a neurorehabilitation strategy in the cerebellar ataxias
… -motor aspects such as emotional, cognitive and sensory processing. Deficits in the acquisition and processing of sensory information are one explanation for the movement problems observed in cerebellar ataxia. Sensory deficits result in an inability to make predictions about future events; a …
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Neurophysiological Differences in Pain Reactivity: Why Some People are Tolerant to Pain
… of these differences. Because differences in sensory information processing may underlie variability in tolerance to pain and because measures of sensory gating are used to explore differences in sensory information processing, sensory gating among college students (N = 14) who are tolerant or …
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Postural Sway, EEG and EMG Analysis of Hip and Ankle Muscles during Eight Balance Training Tasks
… significantly higher due to the alteration of sensory information in the eight common balance tasks when compared to the control task. The postural sway was affected by the extent of sensory information available for postural control. The recruitment of specific muscles was affected by the …
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Deep Memory Models and Efficient Reinforcement Learning under Partial Observability
… one major roadblock: limited and imperfect sensory information. In many realistic tasks, sensory information is noisy or incomplete, breaking a core assumption of reinforcement learning. The solution to this challenge is actually well known -- the use of memory. Memory is the storage and …
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Reward and prediction errors in Bayesian sensorimotor control
… the integration of prior knowledge and current sensory information. The present behavioral study addressed the contributions of tonic and phasic dopamine in a Bayesian decision-making task by alternating reward magnitude and inferring reward prediction errors. Twenty-four participants were asked …
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Microfluidics for Calcium Imaging of C.elegans Neurons During Temporally Precise Odor Stimulation
How neurons process sensory stimuli to give rise to different behaviors is one of the most pursued and complex questions in neuroscience. With recent technologies, scientists have been able to map how sensory cues, like odors, are represented in the brain. However, it has been proven difficult to …
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Failures in adaptive locomotion in healthy young adults
… during inadvertent failures and manipulated the sensory information available to guide the limb trajectory. Manipulating the availability of sensory information is important to determine the information used to successfully guide the limbs, particularly the trail limb. Three experiments were …
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Bat swarming as an inspiration for multi-agent systems: predation success, active sensing, and collision avoidance
… in swarms as bats could potentially benefit from information sharing while suffering from frequency jamming, i.e., bats having difficulty in distinguishing between self and peers's information. We conducted field experiments in a cave and found that individual bat increased biosonar output as …
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Solutions to Passageways Detection in Natural Foliage with Biomimetic Sonar Robot
… bats species have evolved biosonar to obtain information from their habitats with dense vegetation. Different from man-made sensors, such as stereo cameras and LiDAR, bats' biosonar has much lower spatial resolution and sampling rates. Their biosonar is capable of reliably finding narrow gaps …
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The Role of Actively Created Doppler shifts in Bats Behavioral Experiments and Biomimetic Reproductions
… known for their unparalleled abilities to encode sensory information that supports fast, reliable action in complex environments, but the mechanisms remain often unclear. Through fast ear motions, bats can encode information on target direction into time-frequency Doppler signatures. These species …
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The Relationship Between Visual Impairments and Socioeconomic Level Based on a Preschool Vision Screening Program.
… to more serious ocular damage. The distorted sensory information may hinder educational achievement as some 80 percent of learning occurs through the visual mode (Sherman, 1972), and inaccurate perception of one’s environment and the resulting inability to interact appropriately in …
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Stochastic architectures for probabilistic computation
The brain interprets ambiguous sensory information faster and more reliably than modern computers, using neurons that are slower and less reliable than logic gates. But Bayesian inference, which is at the heart of many models for sensory information processing and cognition, as well as many machine …
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