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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | Horch, Kenneth W.; Normann, Richard A. | Noble metal penetrating cortical stimulating electrode array: preliminary results | Electrical stimulation of the visual cortex causes subjects to see spots of light (phosphenes) in their visual fields. We have developed arrays of penetrating electrodes which may from the basis of a visual prosthesis centered around electrical stimulation of the visual cortex. These arrays have bee... | Visual prosthesis | 1988 |
| 2 |
 | Horch, Kenneth W.; Normann, Richard A. | Simulation of a phosphene field based visual prosthesis | A visual prosthesis for the blind based upon electrical stimulation of the visual cortex requires the development of an array of electrodes. To establish design specifications for such an electrode array, we have conducted psychophysical experiments with normally sighted subjects wearing a portable... | Visual prosthesis; Phosphene simulator | 1990 |
| 3 |
 | Gerig, Guido | Functional connectivity MR imaging reveals cortical functional connectivity in the developing brain | BACKGROUND AND PURPOSE: Unlike conventional functional MR imaging where external sensory/cognitive paradigms are needed to specifically activate different regions of the brain, resting functional connectivity MR imaging acquires images in the absence of cognitive demands (a resting condition) and de... | 2008-01-01 | |
| 4 |
 | Mathews, V. John | A new model of perceptual threshold functions for application in image compression systems | This paper discusses the development of a perceptual threshold model for the human visual system. The perceptual threshold functions describe the levels of distortions present at each location in an image that human observers can not detect. Models of perceptual threshold functions are useful in ima... | 1995 | |
| 5 |
 | Baxter, Brent S. | Image processing in the human visual system | This work extends the multiplicative visual model to include image texture as suggested by experiments [Campbell, Weisel] linking a low resolution Fourier analysis with neurons in certain parts of the visual cortex. The new model takes image texture into account in the sense that weak texture is acc... | Human visual system; Image texture | 1975 |
| 6 |
 | Gerig, Guido | Regional gray matter growth, sexual dimorphism, and cerebral asymmetry in the Neonatal Brain | Although there has been recent interest in the study of childhood and adolescent brain development, very little is known about normal brain development in the first few months of life. In older children, there are regional differences in cortical gray matter development, whereas cortical gray and wh... | 2007-01-01 | |
| 7 |
 | Mathews, V. John | Subband vector quantization of images using hexagonal filter banks | Abstract Results of psychophysical experiments on human vision conducted in the last three decades indicate that the eye performs a multichannel decomposition of the incident images. This paper presents a subband vector quantization algorithm that employs hexagonal filter banks. The hexagonal filte... | 1992 | |
| 8 |
 | Mathews, V. John | Neural decoding using a nonlinear generative model for brain-computer interface | Kalman filters have been used to decode neural signals and estimate hand kinematics in many studies. However, most prior work assumes a linear system model, an assumption that is almost certainly violated by neural systems. In this paper, we show that adding nonlinearities to the decoding algorithm ... | 2014-01-01 | |
| 9 |
 | Gerig, Guido | Semi-automated application for kidney motion correction and filtration analysis in MR renography | Altered renal function commonly affects patients with cirrhosis, a consequence of chronic liver disease. From lowdose contrast material-enhanced magnetic resonance (MR) renography, we can estimate the Glomerular Filtration Rate (GFR), an important parameter to assess renal function. Two-dimensional ... | 2014-01-01 | |
| 10 |
 | Gerig, Guido | White matter microstructure and atypical visual orienting in 7 month-olds at risk for autism | Objective: The authors sought to determine whether specific patterns of oculo-motor functioning and visual orientingcharacterize 7-month-old infants who later meet criteria for an autism spectrum disorder (ASD) and to identify the neural correlates of these behaviors. Method:Data were collected from... | 2013-01-01 | |
| 11 |
 | Gerig, Guido | A structural MRI study of human brain development from birth to two years | Brain development in the first 2 years after birth is extremely dynamic and likely plays an important role in neurodevelopmental disorders, including autism and schizophrenia. Knowledge regarding this period is currently quite limited. We studied structural brain development in healthy subjects from... | 2008-01-01 | |
| 12 |
 | Shirley, Peter S. | Natural image statistics for computer graphics | The class of all natural images is an infinitely small fraction of all possible images. The structure of natural images can be statistically modeled, revealing striking regularities. The human visual system appears to be optimized to view natural images, as opposed to any possible image, and therefo... | Natural image | 2001 |
| 13 |
 | Tasdizen, Tolga; Jones, Bryan W.; Whitaker, Ross T.; Marc, Robert E. | Ultrastructural mapping of neural circuitry: a computational framework | Complete mapping of neuronal networks requires data acquisition at synaptic resolution with canonical coverage of tissues and robust neuronal classification. Transmission electron microscopy (TEM) remains the optimal tool for network mapping. However, capturing high resolution, large, serial sectio... | 2009 | |
| 14 |
 | Tasdizen, Tolga; Foster, Norman L. | Automatic classification of alzheimer's desease vs. frontotemporal dementia: a spatial decision tree aprroach with FDG-PET | We introduce a novel approach for the automatic classification of FDG-PET scans of subjects with Alzheimers Disease (AD) and Frontotemporal dementia (FTD). Unlike previous work in the literature which focuses on principal component analysis and predefined regions of interest, we propose the combined... | 2008 | |
| 15 |
 | Harrison, Reid R. | Wireless integrated circuit for 100-channel neural stimulation | We present the design of an integrated circuit for wireless neural stimulation, along with bench-top and in-vivo experimental results. The chip has the ability to drive 100 individual stimulation electrodes with constant-current pulses of varying amplitude, duration, interphasic delay, and repetiti... | Wireless; Integrated Neural Interface; Neural recording; Telemetry | 2008-11 |
| 16 |
 | Anderson, Erik Wesley | Discovering and visualizing patterns in EEG data | Brain activity data is often collected through the use of electroen-cephalography (EEG). In this data acquisition modality, the electric fields generated by neurons are measured at the scalp. Although this technology is capable of measuring activity from a group of neurons, recent efforts provide ev... | 2013-01-01 | |
| 17 |
 | Faugeras, Olivier Dominique | Digital color image processing and psychophysics within the framework of a human visual model | A three-dimensional homomorphic model of human color vision based on neurophysiological and psychophysical evidence is presented. This model permits the quantitative definition of perceptually important parameters such as brightness. saturation, huo and strength. By modelling neural interaction in t... | Human visual model; Neurophysiological evidence; Psychophysical evidence | 1977 |
| 18 |
 | Mathews, V. John | An optimal design procedure for intraband vector quantized subband coding | AbstTact- Subband coding with vector quantization is addressed in this paper. Forming the data vectors from both between and within the subbands is considered. The former of these two schemes is referred to as interband coding and the latter as intraband coding. Interband coder design is relatively ... | 1995 | |
| 19 |
 | Harrison, Reid R. | HermesC: low-power wireless neural recording system for freely moving primates | Neural prosthetic systems have the potential to restore lost functionality to amputees or patients suffering from neurological injury or disease. Current systems have primarily been designed for immobile patients, such as tetraplegics functioning in a rather static, carefully tailored environment.... | Brain-machine interface; Low power; Neural prosthetics; Telemetry; Wireless; Neural recording; HermesC | 2009-08 |
| 20 |
 | Harrison, Reid R. | Versatile integrated circuit for the acquisition of biopotentials | Electrically active cells in the body produce a wide variety of voltage signals that are useful for medical diagnosis and scientific investigation. These biopotentials span a wide range of amplitudes and frequencies. We have developed a versatile front-end integrated circuit that can be used to amp... | Biopotential; Neural recording; Electrodes; Amplifier | 2007-09 |
| 21 |
 | Tasdizen, Tolga; Jones, Bryan W.; Whitaker, Ross T. | Computational framework for ultrastructural mapping of neural circuitry | Circuitry mapping of metazoan neural systems is difficult because canonical neural regions (regions containing one or more copies of all components) are large, regional borders are uncertain, neuronal diversity is high, and potential network topologies so numerous that only anatomical ground truth c... | 2009 | |
| 22 |
 | Horch, Kenneth W.; Dhillon, Gurpreet S. | Direct neural sensory feedback and control of a prosthetic arm | Evidence indicates that user acceptance of modern artificial limbs by amputees would be significantly enhanced by a system that provides appropriate, graded, distally referred sensations of touch and joint movement, and that the functionality of limb prostheses would be improved by a more natural co... | Peripheral Nerve Implant; Prosthetic Limb Control; Sensory Feedback | 2005-12 |
| 23 |
 | Horch, Kenneth W. | Differential activation of nerve fibers with magnetic stimulation in humans | Earlier observations in our lab had indicated that large, time-varying magnetic fields could elicit action potentials that travel in only one direction in at least some of the myelinated axons in peripheral nerves. The objective of this study was to collect quantitative evidence for magnetically in... | Magnetic stimulation; Peripheral nerve; Electromyographic potential; Somatosensory potential | 2006 |
| 24 |
 | Freire, Juliana; Silva, Claudio T. | VisMashup: streamlining the creation of custom visualization applications | Visualization is essential for understanding the increasing volumes of digital data. However, the process required to create insightful visualizations is involved and time consuming. Although several visualization tools are available, including tools with sophisticated visual interfaces, they are o... | VisMashup; Dataflow; Visualization systems; Mashups; Medleys | 2009-11 |
| 25 |
 | Johnson, Christopher R. | Computer simulation and visualization in medicine | The goals of medical simulation and visualization are multifaceted. While some simulations and visualizations facilitate diagnosis, others help physicians plan surgery, therapy, and other forms of treatment. Still other simulation and visualization techniques are used for medical training and to acq... | Technology; Computer assisted instruction; Computer graphics | 2000 |