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Odd-Ball Protocol Stimulator for Neuroinformatics Research

DUDÁČEK, K., MAUTNER, P., MOUČEK, R., NOVOTNÝ, J. Odd-Ball Protocol Stimulator for Neuroinformatics Research. In Applied Electronics 2011. Plzeň: ZČU v Plzni, 2011. s. 107-110. ISBN: 978-80-7043-987-6 , ISSN: 1803-7232
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The P3 (or P300) event-related brain potential is thought to reflect brain electric activity related to cognitive processes. It is widely used not only in psychological research and clinical diagnosis but also in the brain computer interface (BCI) systems. To elicit the P3 component the odd-ball stimulation protocol is often used. In this paper, design of simple visual odd-ball protocol stimulator, which generates stimuli with predefined parameters, is described. The stimulator also generates additional signals for synchronization with EEG recording computer. Application of the stimulator in experimental work is also presented here.

ERP components detection using wavelet transform and matching pursuit algorithm

ŘONDÍK, T., CINIBURK, J., MOUČEK, R., MAUTNER, P. ERP components detection using wavelet transform and matching pursuit algorithm. In Applied Electronics 2011. Plzeň: ZČU v Plzni, 2011. s. 333-336. ISBN: 978-80-7043-987-6 , ISSN: 1803-7232
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The paper deals with ERP (Event related potentials) components detection using wavelet transform and matching pursuit algorithm. The EEG/ERP domain is shortly introduced and essential information about EEG and ERP signals is given. The wavelet transform, matching pursuit algorithms and its modification are introduced and their suitability for ERP components detection is described. Experimental results obtained by using these algorithms for P3 component detection are summarized.

EEG/ERP portal - Extending object oriented code for the missing semantics using Java annotations

JEŽEK, P., MOUČEK, R. EEG/ERP portal - Extending object oriented code for the missing semantics using Java annotations. 2011.
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Since EEG/ERP experiments produce a lot of data we have been facing a lot of difficulties with their long term storage and management. As the result the EEG/ERP portal has been developed. Because we are registering the EEG/ERP portal as a recognizable data source within the Neuroscience Information Framework (NIF) we need to provide the portal structure in the form of ontology expressed by the semantic web technologies. Since most applications are developed using object oriented modeling we need to ensure a suitable mapping. Concerning one side transformation this mapping can be performed relatively satisfactorily. However, when we want to use more capabilities of OWL, we have to enrich the object-oriented code by the missing semantics.

Overview of neuroinformatics infrastucture in Pilsen, CZ

MOUČEK, R., JEŽEK, P. Overview of neuroinformatics infrastucture in Pilsen, CZ. 2011.
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The paper deals with a present neuroinformatics infrastructure at Department of Computer Science and Engineering, Pilsen, the Czech Republic. EEG/ERP portal serves for storage and management of EEG/ERP experiments. The functionalities include experimental scenarios, a content management system and management of user groups, full text search or a laboratory booking system. The portal is registered within Neuroscience Information Framework (NIF). The inner structure of the portal is provided as ontology. The convertors of widely used EEG/ERP data/metadata formats (edf, vhdr, ascii) have been developed. The library of methods for EEG/ERP signal processing includes the wavelet transform, matching pursuit algorithm, and the modification of Hilbert-Huang transform. JERPA/JUIGLE software is a software application for EEG/ERP signal visualization and processing. It includes epochs and artifacts marking, baseline correction, epochs averaging, and integration of signal processing methods.

PreSti-Neuroscience stimuli presentation software

JAROŠ, P., MOUČEK, R. PreSti-Neuroscience stimuli presentation software. 2011.
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This paper summarizes a new approach for creating test scenarios and stimuli presentation in neuroinformatics ERP experiments. The approach uses visual programming that allows creation of test scenarios without a need of any programming language knowledge. The newly designed programming language is described in this paper. Solution for weaknesses of visual programming is provided. The next part deals with performance of stimuli presentation software to ensure lowest possible latency between stimuli presentation and synchronisation with electroencephalograph.

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