Petr Jezek

• Ph. D.
• Researcher at University of West Bohemia

Background: Independent and open brain-computer interfaces (BCIs) working outside the laboratory environment are still rare. Their most limiting factors include low classification accuracy, information transfer bit-rate, low variability of used approaches, and closeness of the hardware and software components of the system. The presented BASIL proj...

Affordable brain-computer interfaces (BCIs) working outside the laboratory environment are still rare. Their most limiting factors include low classification accuracy, information transfer bit rate, low variability of used approaches, and closeness of the hardware and software components of the system. The presented BASIL project has focused on des...

The Neurodata Without Borders (abbreviation NWB) format is a current technology for storing neurophysiology data along with the associated metadata. Data stored in the format is organized into separate HDF5 files, each file usually storing the data associated with a single recording session. While the NWB format provides a structured method for sto...

The Brain-Driven Computer Assistance System for People with Limited Mobility (BASIL) project aims to provide disabled patients with a mean for basic independent communication (i.e. a simple BCI). Besides laboratory testing, it is also important to test related hardware and software in the hospital on the target group of patients. Although the exper...

The Brain-Driven Computer Assistance System for People with Limited Mobility (BASIL) project aims to provide disabled patients with a mean for basic independent communication (i.e. a simple BCI). Besides laboratory testing, it is also important to test related hardware and software in the hospital on the target group of patients. Although the exper...

Current infrastructures for experimental data, results and computational tools make a shift from locally main- tained solutions to remote cloud-based infrastructures. It brings a higher availability, sustainability and per- formance. However, specifics of different research areas require development of customized solutions for individual research d...

Diabetes is a silent disease. It is the 8th most common cause of death that does not hurt until it is too late and the disease has developed. Technology plays a vital role in managing diabetes and educating patients about importance of the treatment. The patient must be able to manage his blood glucose level. However, blood glucose level is measure...

There are a lot of sensors for monitoring human health and/or fitness level on the market. They facilitate collection of data from the human body and advanced devices even facilitate data transfer to remote servers where the collected data are further processed. While health data, obtained e.g. from accelerometers or chest straps, are collected rat...

The goal of brain-computer interface (BCI) is to provide communication and control pathways to people with severe motor disabilities. Noninvasive brain-computer interfaces focus primarily on electroencephalography (EEG) and event-related potential (ERP) based methods. It means that they use scalp-recorded electrical activity of the human brain to c...

Sharing of electrophysiology data, related metadata, processing methods and workflows is one of the crucial tasks in neuroinformatics. International Neuroinformatics Coordinating Facility (INCF) develops and maintains computational infrastructure for neuroscientists and INCF Programs address infrastructural issues of high importance to the neurosci...

The article deals with and discusses two main approaches in building semantic structures for electrophysiological metadata. It is the use of conventional data structures, repositories, and programming languages on one hand and the use of formal representations of ontologies, known from knowledge representation, such as description logics or semanti...

Acknowledgements Grewe, J., T. Wachtler, and J. Benda. "odML format and terminologies for automated handling of (meta) data." Front. Neurosci. Conference Abstract: Neuroinformatics. Vol. 2010. 2010. Jezek, Petr, and Roman Moucek. "Semantic web in eeg/erp portal: ontology development and nif registration." Biomedical Engineering and Informatics (BM...

Acknowledgements Mouček R, Ježek P, Vařeka L, Řondík T, Brůha P, Papež V, Mautner P, Novotný J, Prokop T and Štěbeták J (2014) Software and hardware infrastructure for research in electrophysiology. Front. Neuroinform. 8:20. doi: 10.3389/fninf.2014.00020 Le Franc Y, Bandrowski A, Brůha P, Papež V, Grewe J, Mouček R, Tripathy SJ and Wachtler T (201...

Experiments in electrophysiology produce a lot of unstructured metadata collected in electrophysiology databases. The data are usually accessed through a web interface implemented on the top of data model respecting given data format. A lot of experiments are conducted outside the laboratory where access to these databases is not always available....

As in other areas of experimental science, operation of electrophysiological laboratory, design and performance of electrophysiological experiments, collection, storage and sharing of experimental data and metadata, analysis and interpretation of these data, and publication of results are time consuming activities. If these activities are well orga...

Most data management systems include a database in the backend to store data and the associated metadata and a web-based user interface to access and modify the data/metadata. User interfaces are specifically tailored for representing a unique database structure and cannot be easily reused for other database structure. Furthermore the generated web...

Large amounts of EEG/ERP (electroencephalography, event-related potential) data, various data formats and non-standardized domain description lead to incompatible results and interpretations of EEG/ERP experimental data/metadata and to difficult communication between interested laboratories. Authors' research group has solved these problems and has...

This paper introduces difficulties related to running of signal processing methods. Although several systems that implement signal processing methods exist, their sharing and remote calling is not satisfactorily solved. Authors present a custom server-side approach that provides a powerful plug-in engine for integration of signal processing methods...

Substantial difficulties related to collecting data/metadata from EEG/ERP experiments are presented. Because of suitable ontology describing EEG/ERP experiments does not exist authors present a custom ontology that is proposed to be discussed within the scientific community. The presented ontology is practically implemented within the EEG/ERP Porta...

The purpose of this paper is to introduce a system for EEG/ERP (electroencephalography, event-related potentials) data and metadata storage and processing and to summarize the authors' research in this field. Since researchers have difficulties with a suitable long-term storage and management of electrophysiology data the presented system helps the...

Because the Semantic Web uses its technologies for presenting data/metadata on the web and common systems are based on object-oriented languages a need for suitable mapping is emerging. This paper describes the difficulties during transformation of data layer represented by object-oriented code into the semantic web structures (OWL, RDF). Since the...

A short introduction to the EEG/ERP domain and a software solution for storing and managing of EEG/ERP experiments is presented in this paper. This solution was developed as a standalone web based system available for the community of researches to enable storing of experiments. Because authors' plan, to register this EEG/ERP portal as a recognizab...

EEG/ERP (event-related potentials) domain is shortly introduced in this paper and system for storing and managing EEG/ERP experiments is presented. The system has been developed as a standalone web based portal. Authors' plan to register this portal as a recognized data source requires providing domain ontology. Authors investigate transformation o...

This paper deals with difficulties occurring during transformation of schema and data from an object-oriented code to a semantic web representation (RDF, OWL). The authors describe differences in semantic expressivity between the object-oriented approach and the semantic web approach and look for the ways to fill this semantic gap. Then some existi...

The paper shortly describes EEG/ERP domain and the system for storage and management of data and metadata from EEG/ERP experiments. The system has been developed using common technologies and data structures (object oriented code, relational database). A registration of the system as a recognized data source requires representation of its data and...

This paper deals with the software infrastructure for EEG/ERP (electroencephalography, event related potentials) research. The requirements for building this infrastructure have arisen from laboratory needs, unavailability of appropriate software tools and incompatibility of previously used commercial solutions. The standardization of EEG/ERP data...

This paper shortly describes the system, which provides the possibility to store and manage data and metadata from EEG/ERP experiments. The system is planned to be registered as a source of neuroscience data and metadata. It is one of the reasons we need to provide the system ontology. The scientific papers often describe the domain by using a sema...

This article comes out the results of 1st INCF Workshop on Sustainability of Neuroscience Databases; describes the aims of our research project, summarizes the problems with the storage and processing of EEG/ERP records and provides initial proposals to EEG/ERP data format standardization and data/metadata storage. Research aim: Our research team...