Search results for: V. Moret

Items from 1 to 20 out of 27 results

article

Revisiting the Wang–Mendel algorithm for fuzzy classification

D. Alvarez‐Estevez, V. Moret‐Bonillo

In this paper, we review the Wang–Mendel algorithm for the induction of fuzzy IF‐THEN rules in the context of classification problems. A general fuzzy inference architecture for classification is proposed with the aim of studying the influence of alternative configurations of the learning model. Specifically, we analyse the effects of changing the aggregation strategy, and we explore the use of different...

article

Distant heterotopic callosal connections to premotor cortex in non-human primates

F. Lanz, V. Moret, R. Ambett, C. Cappe, more

Neuroscience > 2017 > 344 > C > 56-66

Cortico-cortical connectivity has become a major focus of neuroscience in the last decade but most of the connectivity studies focused on intrahemispheric circuits. Little has been reported about information acquired and processed in the premotor cortex and its functional connection with its homotopic counterpart in the opposite hemisphere via the corpus callosum. In non-human primates (macaques)...

article

Effects of dorsolateral prefrontal cortex lesion on motor habit and performance assessed with manual grasping and control of force in macaque monkeys

S. Badoud, S. Borgognon, J. Cottet, P. Chatagny, more

Brain Structure and Function > 2017 > 222 > 3 > 1193-1206

In the context of an autologous adult neural cell ecosystem (ANCE) transplantation study, four intact adult female macaque monkeys underwent a unilateral biopsy of the dorsolateral prefrontal cortex (dlPFC) to provide the cellular material needed to obtain the ANCE. Monkeys were previously trained to perform quantitative motor (manual dexterity) tasks, namely, the “modified-Brinkman board” task and...

chapter

Temporal Issues in the Intelligent Interpretation of the Sleep Apnea Syndrome

M. Cabrero-Canosa, M. Castro-Pereiro, M. Graña-Ramos, E. Hernandez-Pereira, more

Lecture Notes in Computer Science > Artificial Intelligence in Medicine > 235-238

Automation of the medical diagnosis of the Sleep Apnea Syndrome (SAS) requires an intelligent analysis of the pneumological and neurophysiological signals of the patient that combines both conventional and Artificial Intelligence techniques in order to detect respiratory abnormalities and construct a hypnogram for the patient, and a process of temporal fusion and correlation between the signals for...

chapter

Model Comparison for the Detection of EEG Arousals in Sleep Apnea Patients

D. Álvarez-Estévez, V. Moret-Bonillo

Lecture Notes in Computer Science > Bio-Inspired Systems: Computational and Ambient Intelligence > Biomedical Applications > 997-1004

Sleep Apnea/Hypopnea Syndrome (SAHS) is a very common sleep disorder characterized by the repeated occurrence of involuntary breathing pauses during sleep. Cessation in breathing often causes Electroencephalographic (EEG) arousals as a response, and therefore detection of arousals is important since they provide important evidence for localization of apneic events and their number is directly related...

chapter

Computer-Assisted Decision Support in the Sleep Apnea-Hypopnea Syndrome

D. Álvarez-Estévez, V. Moret-Bonillo

IFMBE Proceedings > 4th European Conference of the International Federation for Medical and Biological Engineering > Bioinstrumentation and Medical Devices > 1121-1124

The Sleep Apnea/Hypopnea Syndrome (SAHS) is a very common sleep disorder whose direct consequences include insomnia, daytime somnolence and cardiovascular problems such as high blood pressure, ischemic myocardiopathy and infarction. Diagnosis requires a polysomnographic recording to be made in a hospital sleep unit. In this work we describe a system capable of detecting and classifying apneic events...

article

Evolution of anaesthesia care and related events between 1996 and 2010 in Switzerland

V. PITTET, C. PERRET, V. MORET, O. DESPOND, more

Acta Anaesthesiologica Scandinavica > 57 > 10 > 1275 - 1286

BackgroundAnaesthesia Databank Switzerland (ADS) is a voluntary data registry introduced in 1996. Its ultimate goal is to promote quality in anaesthesiology. MethodsThe ADS registry analyses routinely recorded adverse events and provides benchmark comparisons between anaesthesia departments. Data collection comprises a set of 31 variables organised into three modules, one mandatory and two optional...

article

Refined methodology for implantation of a head fixation device and chronic recording chambers in non-human primates

F. Lanz, X. Lanz, A. Scherly, V. Moret, more

Journal of Neuroscience Methods > 2013 > 219 > 2 > 262-270

The present study was aimed at developing a new strategy to design and anchor custom-fitted implants, consisting of a head fixation device and a chronic recording chamber, on the skull of adult macaque monkeys. This was done without the use of dental resin or orthopedic cement, as these modes of fixation exert a detrimental effect on the bone. The implants were made of titanium or tekapeek and anchored...

article

Identification of Electroencephalographic Arousals in Multichannel Sleep Recordings

D Álvarez-Estévez, V Moret-Bonillo

IEEE Transactions on Biomedical Engineering > 2011 > 58 > 1 > 54 - 63

Electroencephalographic arousals are defined as abrupt shifts in electroencephalogram (EEG) frequency during sleep. Occurrence of arousals results in fragmented sleep, being one of the most important causes of daytime sleepiness among sleep disorders. Detection of arousals requires a polysomnographic (PSG) recording to be made during the patient's sleep. The resulting PSG is then analyzed offline...

chapter

An HTML analyzer for the study of web usability

D. Alonso-Rios, I. Luis-Vazquez, E. Mosqueira-Rey, V. Moret-Bonillo, more

2009 IEEE International Conference on Systems, Man and Cybernetics > 1224 - 1229

2009 IEEE International Conference on Systems, Man and Cybernetics. SMC 2009

This paper presents an HTML analyzer for the study of Web usability. The analyzer parses HTML code in order to extract usability information from Web pages. For usability aspects that can be analyzed automatically, the analyzer draws conclusions and offers suggestions. For more subjective usability issues, it assists the expert by presenting relevant information in a convenient way. Many similar applications...

chapter

Usability taxonomy and context-of-use taxonomy for usability analysis

E. Mosqueira-Rey, D. Alonso-Rios, V. Moret-Bonillo

2009 IEEE International Conference on Systems, Man and Cybernetics > 812 - 817

2009 IEEE International Conference on Systems, Man and Cybernetics. SMC 2009

The interest in developing usable products has led to the inclusion of usability aspects in product development processes. Generally speaking, the literature tends to define usability in overly brief and ambiguous terms and to describe its application in informal terms. Also there is a tendency to overlook characteristics of the context in which a product is to be used, and this usually means that...

chapter

A continuous evaluation of the awake sleep state using fuzzy reasoning

D. Alvarez-Estevez, J.M. Fernandez-Pastoriza, V. Moret-Bonillo

2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society > 5539 - 5542

2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Sleep staging is one of the most important tasks on the context of sleep studies. From more than 40 years the gold standard to the characterization of patient's sleep is the use of the rules proposed by Rechtschaffen and Kales (R&K). However this method has the limitation of the unnatural assignment of discrete stages instead of doing it in a continuous manner. As part of a more general framework,...

chapter

Temporal Knowledge in the Intelligent Diagnosis of Sleep Apnea Syndrome: a New Approach

A. Fernandez-Leal, V. Moret-Bonillo

2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society > 1039 - 1042

29th Annual International Conference of the IEEE EMBS

This article describes the results of the application of a framework for handling temporal information-based on the causal temporal constraint network model-to a sleep apneas syndrome diagnostic system. This approach enables the temporal quantitative, qualitative and causal constraints between events (which can be points (instants) or intervals) to be represented and processed, ensures greater precision...

chapter

A computable model for representing temporal knowledge and managing causality

A. Fernandez-Leal, V. Moret-Bonillo

MELECON 2006 - 2006 IEEE Mediterranean Electrotechnical Conference > 811 - 815

MELECON 2006. 2006 IEEE Mediterranean Electrotechnical Conference

We describe a new computable model for representing temporal information and for handling causality effectively. The proposed model permits qualitative temporal constraints (in which primitives can be points or intervals) and quantitative temporal constraints to be established. It also includes a representation of the causal constraints that are commonly found in any application domain. These causal...

article

An intelligent system for the detection and interpretation of sleep apneas

M. Cabrero-Canosa, M. Castro-Pereiro, M. Graña-Ramos, E. Hernandez-Pereira, more

Expert Systems With Applications > 2003 > 24 > 4 > 335-349

The sleep apnea syndrome (SAS) is a respiratory disorder, which is characterised by the occurrence of five or more apneic events (apnea or hypopnea) per hour of sleep. Diagnosis of the SAS is a process that is markedly heuristic by nature, in that doctors handle information that is both numerical and symbolic, and employ qualitative descriptive terminology. An expert draws up a contextualised clinical...

article

Validation of intelligent systems: a critical study and a tool

E. Mosqueira-Rey, V. Moret-Bonillo

Expert Systems With Applications > 2000 > 18 > 1 > 1-16

One of the most important phases in the methodology for the development of intelligent systems is that corresponding to the evaluation of the performance of the implemented product. This process is popularly known as verification and validation (V&V). The majority of tools designed to support the V&V process are preferentially directed at verification in detriment to validation, and limited...

article

Applying statistical, uncertainty-based and connectionist approaches to the prediction of fetal outcome: a comparative study

A. Alonso-Betanzos, E. Mosqueira-Rey, V. Moret-Bonillo, B. Baldonedo del Rı́o

Artificial Intelligence In Medicine > 1999 > 17 > 1 > 37 - 57

A common situation in the field of medicine is the availability of a huge quantity of data and knowledge relevant to a problem which is nevertheless, to a greater or lesser degree, incomplete or imprecise. This kind of problem occurs, for example, with respect to the information available for the prognostic tasks required for pregnancy monitoring, where decision-making by physicians calls for the...

article

Electrically induced Fos-like immunoreactivity in the auditory pathway of the rat: Effects of survival time, duration, and intensity of stimulation

J.S. Zhang, C.A. Haenggeli, A. Tempini, M.W. Vischer, more

Brain Research Bulletin > 1996 > 39 > 2 > 75-82

The goal of the present study was to establish how Fos-like immunoreactivity (FLI) elicited in the rat auditory pathway by unilateral electric stimulation of the cochlea is affected by the following experimental parameters: duration and intensity of stimulation, duration of survival time after offset of stimulation. The dense FLI found in the ipsilateral dorsal cochlear nucleus, as well as the moderate...

article

Functional Link between Phosphorylation State of Membrane Proteins and Morphological Changes of Human Erythrocytes

L. Bordin, G. Clari, I. Moro, F. Dallavecchia, more

Biochemical and Biophysical Research Communications > 1995 > 213 > 1 > 249-257

The Tyr-phosphorylation of the cytoplasmic domain of the major membrane-spanning band 3, rather than the Ser/Thr-phosphorylation of the membrane proteins (spectrin and band 3 itself), might be functionally related to certain morphological changes of human erythrocytes. This view is supported by the following lines of evidence: a) vanadate or its derivative pervanadate (vanadyl hydroperoxide), which...

chapter

Development of an adviser system for foetal diagnosis during labour

A. Alonso, V. Moret, C. Hernandez

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society > 1355 - 1357 vol.3

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society

The expert system FOETOS is designed to aid diagnosis and prognosis of foetal condition during the nonstress test, foetal biophysical profiling, the contraction stress test, labour and the immediate neonatal period. Its action during labour to generate the following information is described: (1) characteristics, aetiology, diagnosis, prognosis, and therapeutic advice concerning the state of the foetus;...

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INFONA - science communication portal

Search results for: V. Moret

Revisiting the Wang–Mendel algorithm for fuzzy classification

Distant heterotopic callosal connections to premotor cortex in non-human primates

Effects of dorsolateral prefrontal cortex lesion on motor habit and performance assessed with manual grasping and control of force in macaque monkeys

Temporal Issues in the Intelligent Interpretation of the Sleep Apnea Syndrome

Model Comparison for the Detection of EEG Arousals in Sleep Apnea Patients

Computer-Assisted Decision Support in the Sleep Apnea-Hypopnea Syndrome

Evolution of anaesthesia care and related events between 1996 and 2010 in Switzerland

Refined methodology for implantation of a head fixation device and chronic recording chambers in non-human primates

Identification of Electroencephalographic Arousals in Multichannel Sleep Recordings

An HTML analyzer for the study of web usability

Usability taxonomy and context-of-use taxonomy for usability analysis

A continuous evaluation of the awake sleep state using fuzzy reasoning

Temporal Knowledge in the Intelligent Diagnosis of Sleep Apnea Syndrome: a New Approach

A computable model for representing temporal knowledge and managing causality

An intelligent system for the detection and interpretation of sleep apneas

Validation of intelligent systems: a critical study and a tool

Applying statistical, uncertainty-based and connectionist approaches to the prediction of fetal outcome: a comparative study

Electrically induced Fos-like immunoreactivity in the auditory pathway of the rat: Effects of survival time, duration, and intensity of stimulation

Functional Link between Phosphorylation State of Membrane Proteins and Morphological Changes of Human Erythrocytes

Development of an adviser system for foetal diagnosis during labour

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