A5056374578- Neural dynamics and brain function
- Neurological disorders and treatments
- Neurotransmitter Receptor Influence on Behavior
- Radiation Dose and Imaging
- Digital and Traditional Archives Management
- Advanced Memory and Neural Computing
- Advanced X-ray and CT Imaging
- Memory and Neural Mechanisms
- Neural Networks and Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Neuroscience and Neuropharmacology Research
- Motor Control and Adaptation
- Visual Attention and Saliency Detection
- Digital and Cyber Forensics
- Non-Invasive Vital Sign Monitoring
- Neuroscience and Neural Engineering
- Libraries and Information Services
- Financial Markets and Investment Strategies
- Advanced Image and Video Retrieval Techniques
- Muscle activation and electromyography studies
- Medical Imaging Techniques and Applications
- Research Data Management Practices
- Digital Radiography and Breast Imaging
- Neural and Behavioral Psychology Studies
- Receptor Mechanisms and Signaling
ETH Zurich
2018
University of Zurich
2013
Rütter Soceco (Switzerland)
2011
Varian Medical Systems (Switzerland)
2006-2010
Varian Medical Systems (Germany)
2007
Varian Medical Systems (United States)
2006
Salk Institute for Biological Studies
2002-2004
Intelligent Optical Systems (United States)
2003-2004
University of Fribourg
1998-2001
University of Southern California
1999
Anticipatory neural activity preceding behaviorally important events has been reported in cortex, striatum, and midbrain dopamine neurons. Whereas neurons are phasically activated by reward-predictive stimuli, anticipatory of cortical striatal is increased during delay periods before events. Characteristics dopa-mine neuron resemble those the prediction error signal temporal difference (TD) model Pavlovian learning (Sutton & Barto, 1990). This study demonstrates that TD reproduces...
Ancient Egyptian and Peruvian mummies are extremely valuable historical remains, noninvasive methods for their examination desirable. The current standard of reference radiologic imaging is computed tomography (CT), with tissue having a homogeneous appearance on all CT images. It was long believed that ancient mummified could not be studied magnetic resonance (MR) because the low water content in mummies. Recently, however, usefulness MR evaluation demonstrated first time, use special...
New scenarios in diabetes treatment have been opened the last ten years by continuous glucose monitoring (CGM) sensors. In particular, Non-Invasive CGM sensors are particularly appealing, even though they still at an early stage of development. Solianis Monitoring AG (Zürich, Switzerland) has proposed approach based on a multisensor concept, embedding primarily dielectric spectroscopy and optical This concept requires mathematical model able to reconstruct concentration from 150 channels...
In contrast to the narrow fan of clinical Computed Tomography (CT) scanners, Cone Beam scanners irradiate a much larger proportion object, which causes additional X-ray scattering. The most obvious scatter artefact is that middle area object becomes darker than outer area, as density in underestimated (cupping). Methods for estimating were investigated can be applied each single projection without requiring preliminary reconstruction. Scatter reduction by Uniform Fraction method was...
Purpose: X‐ray scatter significantly degrades the quality of cone‐beam CT (CBCT) reconstructions by introducing cupping and streaking artifacts. Simple correction techniques, based on subtracting a constant value across projection, fail when flat‐panel detector is transaxially offset as required to increase reconstruction field‐of‐views for body scans. The purpose this study was measure x‐ray profiles detectors characterize resulting Method Materials: Data were collected table‐top CBCT...
Independent component analysis (ICA) is introduced from the viewpoint of maximal information transfer for single neurons. This historical motivation development ICA may be interesting independent agents because each neuron can seen as a agent. We compare performance with principal (PCA) detecting coregulated gene groups in microarray data measured during different stages yeast cell cycle. PCA was shown to find which expression fluctuates periodically cycle (N.S. Holter et al., 2001). result,...
Purpose Changes in file format specifications challenge long-term preservation of digital documents. Digital archives thus often focus on specific formats that are well suited for preservation, such as the PDF/A format. Since only few customers submit files, may consider converting submitted files to The paper aims discuss these issues. Design/methodology/approach authors evaluated three software tools batch conversion common PDF/A-1b: LuraTech PDF Compressor, Adobe Acrobat XI Pro and...
Purpose: To characterize the geometric accuracy of imaging systems a newly designed accelerator (Trilogy MX, Varian Medical Systems, Palo Alto, CA) using fully automated, calibration tool. Methods: A tool ‐ consisting phantom containing 16 tungsten carbide ball‐bearings and MV collimator insert with central pin has been used to coincidence kV equipment radiation isocenter Trilogy MX. Three sets data are acquired: images at multiple rotations, both gantry angles. The identify axis beam,...
Purpose: To develop an efficient analytical scatter correction algorithm for the On-Board Imager (OBI) both center-detector and offset-detector geometries used cone-beam computed tomography (CBCT). The geometry is larger transaxial field-of-views particularly challenging due to asymmetric nature of associated profile higher overall scatter-to-primary ratios. Methods Materials: A kernel model was implemented. modeled as array pencil beams. For each beams, a point-spread function determined...
th 1999 Many theorists emphasize the role of an “internal model world” in directing intelligent behavior. Internal models predict evolution environment by imitating its causal flow. They compute prediction signals and use these to form novel associative chains. Formation such predictive chains may contribute reasoning planning. Animals seem learn internal models; they anticipate predictable events, their behavior latent learning experiments reflects formation Despite behavioral evidence,...
Neurobiologically-inspired algorithms were investigated for their ability to recognize airplanes on satellite images. Standard segmentation often segregate objects in several segments or merge sections of one segment. To correct such errors, we used information the template object (top-down information) errors by merging (binding). This strategy was influenced neurobiological findings demonstrating that top-down modulates visual representations primary areas. Our use gray-scale, size, moment...