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CreatorTitleDescriptionSubjectDate
51 Harrison, Reid R.Wireless integrated circuit for 100-channel neural stimulationWe 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; Telemetry2008-11
52 Olson, Randall J.Early experiences with microphacoMicrophaco is the separation of irrigation from aspiration that allows removal of cataracts through sub-2mm incisions. While proven intraocular lenses (IOLs) are not available at this time to take advantage of the small wounds, these wounds are advantageous from a separating irrigation standpoint w...Microphaco; Cataracts; Irrigation; Wounds2004
53 Tasdizen, Tolga; Foster, Norman L.Automatic classification of alzheimer's desease vs. frontotemporal dementia: a spatial decision tree aprroach with FDG-PETWe 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
54 Normann, Richard A.Statistical encoding model for a primary motor cortical brain-computer interfaceA number of studies of the motor system suggest that the majority of primary motor cortical neurons represent simple movement-related kinematic and dynamic quantities in their time-varying activity patterns. An example of such an encoding relationship is the cosine tuning of firing rate with respect...Discrete Distribution; LN Model; Neural Decoding; Neuroprosthetics; Sequential Monte-Carlo Filter2005
55 Research in brief: Fall 2001Summaries of Selected Research Projects at the University of Utah Health Sciences CenterResearch: School of Medicine, College of Pharmacy;, College of Nursing, College of Health2001-09
56 Olson, Randall J.; Mamalis, Nick; Spencer, Terrence S.Postoperative sterile endophthalmitis (TASS) associated with the memorylensPURPOSE: To report 10 cases of delayed-onset acute intraocular inflammation following cataract extraction and posterior chamber implantation of the MemoryLens(R) intraocular lens (IOL). SETTING: John A. Moran Eye Center, Department of Ophthalmology, University of Utah, Salt Lake City, Utah, USA. MET...Memory Lens; Toxic Anterior Segment Syndrome; Retrospective Studies; adverse effects2000-12
57 Kestle, John R. W.; Brockmeyer, Douglas LeeOptic pathway gliomas: a reviewOptic pathway gliomas represent approximately 3-5% of childhood intracranial tumors. They usually occur in children during the first decade of life and are seen in 11-30% of patients with neurofibromatosis Type 1 (NF1). Although these tumors are typically low-grade gliomas, the clinical course and n...Optic pathway glioma; Hypothalamus glioma; Neurofibromatosis Type 12007
58 Anderson, Erik WesleyDiscovering and visualizing patterns in EEG dataBrain 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
59 Faugeras, Olivier DominiqueDigital color image processing and psychophysics within the framework of a human visual modelA 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 evidence1977
60 Mathews, V. JohnAn optimal design procedure for intraband vector quantized subband codingAbstTact- 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
61 Digre, Kathleen B.; Gouw, Launce G.; Harris, Catherine P.; Haines, John H.; Ptacek, L.J.Autosomal dominant cerebellar ataxia with retinal degeneration: clinical, neuropathologic, and genetic analysis of a large kindred.The autosomal dominant cerebellar ataxias (ADCA) comprise a heterogeneous group of neurologic disorders characterized by degeneration of the cerebellum, spinal cord, and brainstem. Genetic analysis has revealed two loci, SCA1 on chromosome 6p, and SCA2 on chromosome 12q, responsible for some ADCA. W...Retinal Degeneration; Cerebellar Ataxia; Genetic Analysis1994-08
62 Normann, Richard A.; Campbell, Patrick K.; Jones, Kelly E.100 electrode intracortical array: structural variabilityA technique has been developed for fabricating three dimensional "hair brush" electrode arrays from monocrystalline silicon blocks. Arrays consist of a square pattern of 100 penetrating electrodes, with 400 microns interelectrode spacing. Each electrode is 1.5mm in length and tapers from about 100 m...Microelectrode arrays; Stimulation; Micromachining1990
63 Harrison, Reid R.HermesC: low-power wireless neural recording system for freely moving primatesNeural 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; HermesC2009-08
64 Schmidt, Meic H.Is vertebral augmentation the right choice for cancer patients with painful vertebral compression fractures?Cancer-related fractures of the spine are different from osteoporotic ones, not only in pathogenesis but also in natural history and treatment. Higher class evidence now supports offering balloon kyphoplasty to a patient with cancer, provided that the pain is significant in intensity, has a position...2012-01-01
65 Harrison, Reid R.Versatile integrated circuit for the acquisition of biopotentialsElectrically 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; Amplifier2007-09
66 Olson, Randall J.; Crandall, Alan S.; Mamalis, NickIntraoperative miotics and posterior capsular opacification following phacoemulsification with intraocular lens insertionBACKGROUND AND OBJECTIVES: Posterior capsular opacification (PCO) is a frequent complication following phacoemulsification with intraocular lens (IOL) implantation. A series of consecutive patients receiving capsular bag-fixated, silicone IOL implants were assessed for both incidence of PCO and the ...Intraocular Lens; Nd:YAG Laser Capsulotomy; Miochol; Miostat; Phacoemulsification; Posterior Capsular Opacification1997-11
67 Normann, Richard A.; Shoham, ShyEncoding mechanisms for sensory neurons studied with a multielectrode array in the cat dorsal root ganglionRecent advances in microelectrode array technology now permit a direct examination of the way populations of sensory neurons encode information about a limb's position in space. To address this issue, we recorded nerve impulses from about 100 single units simultaneously in the L6 and L7 dorsal root ...Sensory; Encoding; Multielectrode; Dorsal Root Ganglion; Cutaneour; Muscle2004
68 Research in brief: Winter 1998Summaries of Selected Research Projects at the University of Utah Health Sciences CenterResearch: School of Medicine, College of Pharmacy;, College of Nursing, College of Health1998-12
69 Agarwal, NiveditaMicrostructural thalamic changes in schizophrenia: a combined anatomic and diffusion weighted magnetic resonance imaging studyObjective: Several magnetic resonance imaging (MRI) and postmortem studies have supported the role of the thalamus in the pathophysiology of schizophrenia. Interestingly, a recent small diffusion weighted imaging (DWI) study showed abnormal thalamic microstructure in patients with schizophrenia. The...2008-01-01
70 Tasdizen, Tolga; Jones, Bryan W.; Whitaker, Ross T.Computational framework for ultrastructural mapping of neural circuitryCircuitry 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
71 Bastiani, MichaelLoss of axons in the cat optic nerve following fetal unilateral enucleation: an electron microscopic analysisBetween the 48th day of gestation (E-48) and maturity, the number of axons in the cat optic nerve is reduced by approximately 50%. On the basis of an electron microscopic assay, the axon population of the E-48 nerve was estimated to be 328,000. In contrast, estimates from two normal adults were 159,...Ganglion cell death; Retinofugal projection; Retinal ganglion cell axons1983
72 Horch, Kenneth W.; Dhillon, Gurpreet S.Direct neural sensory feedback and control of a prosthetic armEvidence 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 Feedback2005-12
73 Horch, Kenneth W.Differential activation of nerve fibers with magnetic stimulation in humansEarlier 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 potential2006
74 Couldwell, William T.Surgical fidelity: comparing the microscope and the endoscopeBackground: Both the microscope and the endoscope are widely used as visualization tools in neurosurgery; however, surgical dexterity when operating with endoscopic visual control may differ. The aim of this study was to compare the surgical fidelity when using each of these visualization tools. Met...2013-01-01
75 Nichols, ShaunExplicit factuality and comparative evidence.We argue that Dienes & Perner's (D&P's) proposal needs to specify independent criteria when a subject explicitly represents factuality. This task is complicated by the fact that people typically "tacitly" believe that each of their beliefs is a fact. This problem does not arise for comparative evide...Philosophy;; Factuality; Dienes & Perner's Proposal1999-12-16
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