Search results for "EURA"

Measuring the Task Induced Oscillatory Brain Activity Using Tensor Decomposition

2019

The characterization of dynamic electrophysiological brain activity, which form and dissolve in order to support ongoing cognitive function, is one of the most important goals in neuroscience. Here, we introduce a method with tensor decomposition for measuring the task-induced oscillations in the human brain using electroencephalography (EEG). The time frequency representation of source-reconstructed singletrail EEG data constructed a third-order tensor with three factors of time ∗ trails, frequency and source points. We then used a non-negative Canonical Polyadic decomposition (NCPD) to identify the temporal, spectral and spatial changes in electrophysiological brain activity. We validate …

SCOPE-Based Emulators for Fast Generation of Synthetic Canopy Reflectance and Sun-Induced Fluorescence Spectra

2017

Progress in advanced radiative transfer models (RTMs) led to an improved understanding of reflectance (R) and sun-induced chlorophyll fluorescence (SIF) emission throughout the leaf and canopy. Among advanced canopy RTMs that have been recently modified to deliver SIF spectral outputs are the energy balance model SCOPE and the 3D models DART and FLIGHT. The downside of these RTMs is that they are computationally expensive, which makes them impractical in routine processing, such as scene generation and retrieval applications. To bypass their computational burden, a computationally effective technique has been proposed by only using a limited number of model runs, called emulation. The idea …

Application of neural networks in diagnostics of chemical compounds based on their infrared spectra

2017

Abstract The paper presents possibilities of using the so-called „finger-print“ identification method and artificial neural network (ANN) for diagnosis of chemical compounds. The construction of a tool specifically developed for this purpose and the ANN, as well as the required conditions for its proper functioning were described. The identification of chemical compounds was tested in two different ways for proving correctness of the assumptions. First of all, initial studies were carried out with the objective to verify the proper functioning of the developed procedure for IR spectrum interpretation. The second research stage was to find out how the properties of artificial neural networks…

Optical Monitoring of Microplastics Filtrated from Wastewater Sludge and Suspended in Ethanol.

2021

The abundance of microplastics (MPs) in the atmosphere, on land, and especially in water bodies is well acknowledged. In this study, we establish an optical method based on three different techniques, namely, specular reflection to probe the medium, transmission spectroscopy measurements for the detection and identification, and a speckle pattern for monitoring the sedimentation of MPs filtrated from wastewater sludge and suspended in ethanol. We used first Raman measurements to estimate the presence and types of different MPs in wastewater sludge samples. We also used microscopy to identify the shapes of the main MPs. This allowed us to create a teaching set of samples to be characterized …

Rahapelimonopoli vai toimilupaperusteinen järjestelmä? : tutkimus suomalaisten pääsarjatason palloilujoukkueiden suhtautumisesta Suomen rahapelimarkk…

2016

Applying health promoting sports club standards in the Netherlands

2014

This study explores health promotion activity of Dutch sports clubs by using the Health Promoting Sports Clubs (HPSC) standards, which are developed in Finland and here applied to the Dutch sports context. The standards consist of 23 items which cover different perspectives on health promotion. The standards form an overall HPSC index, which is used to create health promotion profiles for the sports clubs. 17 sports clubs from the municipality of ‘s-Hertogenbosch participated in this study, of which 42 club officials (1-6 per club) evaluated their own club on all HPSC standards on a five-point Likert scale. Per club, the average score on each standard was calculated. The average on the HPSC…

Auditory cortical and hippocampal-system mismatch responses to duration deviants in urethane-anesthetized rats

2013

Any change in the invariant aspects of the auditory environment is of potential importance. The human brain preattentively or automatically detects such changes. The mismatch negativity (MMN) of event-related potentials (ERPs) reflects this initial stage of auditory change detection. The origin of MMN is held to be cortical. The hippocampus is associated with a later generated P3a of ERPs reflecting involuntarily attention switches towards auditory changes that are high in magnitude. The evidence for this cortico-hippocampal dichotomy is scarce, however. To shed further light on this issue, auditory cortical and hippocampal-system (CA1, dentate gyrus, subiculum) local-field potentials were …

Surrogate Modelling for Oxygen Uptake Prediction Using LSTM Neural Network

2023

Oxygen uptake (V˙O2) is an important metric in any exercise test including walking and running. It can be measured using portable spirometers or metabolic analyzers. Those devices are, however, not suitable for constant use by consumers due to their costs, difficulty of operation and their intervening in the physical integrity of their users. Therefore, it is important to develop approaches for the indirect estimation of V˙O2-based measurements of motion parameters, heart rate data and application-specific measurements from consumer-grade sensors. Typically, these approaches are based on linear regression models or neural networks. This study investigates how motion data contribute to V˙O2 …

Load-dependent alpha suppression is related to working memory capacity for numbers

2022

Alpha suppression is proposed to reflect a surge in cortical excitability to enhance stimulus processing in working memory. The attenuated state of alpha might reflect the prioritisation of behaviourally relevant information, making it a proxy for working memory functioning. Despite the growing interest in utilising the advancement of brain-based measures to evaluate individuals’ cognitive processes, there was a lack of consistent evidence on the relationship between alpha suppression and working memory performance. To investigate whether interindividual differences in alpha suppression might be related to variability in working memory capacity, we recorded participants’ electroencephalogra…

Multippeliskleroosia (MS) sairastavien fyysisessä toimintakyvyssä tapahtuneet muutokset kymmenen vuoden seurannassa

2012

Multippeliskleroosia (MS) sairastavien fyysisessä toimintakyvyssä tapahtuneet muutokset kymmenen vuoden seurannassa Tuulikki Alanko Jyväskylän yliopisto, Liikunta- ja terveystieteen tiedekunta, Terveystieteiden laitos, kevät 2012 sivumäärä 41, liitteitä 4 Ohjaajat: professori Arja Häkkinen Jyväskylän Yliopisto, TtT Jaana Paltamaa Jyväskylän ammattikorkeakoulu Tutkimuksen tarkoituksena oli selvittää Keski-Suomen sairaanhoitopiirin alueen MS-tautia sairastavilla kymmenen vuoden aikana tapahtuneita muutoksia toimintakyvyssä ja yhteiskunnallisten tukipalvelujen käytössä. Tutkimusjoukko saatiin vuoden 2000 MS-kohortista (n=211). Kyselytutkimuksen vastausprosentti oli 84 %. Tutkittavista naisia o…