51. Stroop in motion : neurodynamic modulation underlying interference control while sitting, standing, and walkingManca Peskar, Nina Omejc, Maja Maša Šömen, Aleksandar Miladinović, Klaus Gramann, Uroš Marušič, 2023, izvirni znanstveni članek Povzetek: There is conflicting evidence about how interference control in healthy adults is affected by walking as compared to standing or sitting. Although the Stroop paradigm is one of the best-studied paradigms to investigate interference control, the neurodynamics associated with the Stroop task during walking have never been studied. We investigated three Stroop tasks using variants with increasing interference levels – word-reading, ink-naming, and the switching of the two tasks, combined in a systematic dual-tasking fashion with three motor conditions – sitting, standing, and treadmill walking. Neurodynamics underlying interference control were recorded using the electroencephalogram. Worsened performance was observed for the incongruent compared to congruent trials and for the switching Stroop compared to the other two variants. The early frontocentral event-related potentials (ERPs) associated with executive functions (P2, N2) differentially signaled posture-related workloads, while the later stages of information processing indexed faster interference suppression and response selection in walking compared to static conditions. The early P2 and N2 components as well as frontocentral Theta and parietal Alpha power were sensitive to increasing workloads on the motor and cognitive systems. The distinction between the type of load (motor and cognitive) became evident only in the later posterior ERP components in which the amplitude non-uniformly reflected the relative attentional demand of a task. Our data suggest that walking might facilitate selective attention and interference control in healthy adults. Existing interpretations of ERP components recorded in stationary settings should be considered with care as they might not be directly transferable to mobile settings.
Ključne besede: Stroop task, mobile brain imaging, mobile body imaging, event-related potential, dual tasking
Objavljeno v DiRROS: 29.03.2023; Ogledov: 427; Prenosov: 270
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52. Development of groundwater flow models for the integrated management of the alluvial aquifer systems of Dravsko polje and Ptujsko polje, SloveniaAda Vengust, Anja Koroša, Janko Urbanc, Nina Mali, 2023, izvirni znanstveni članek Povzetek: With increasing exploitation of groundwater resources and implementation of various activities in their recharge areas, it is vital to conduct a comprehensive assessment of aquifers to ensure their conservation and sustainable management. In the present study, we used a comprehensive approach to conceptualise and identify the functioning of two connected aquifer systems in north-eastern Slovenia: the Quaternary porous aquifers Dravsko polje and Ptujsko polje. The study presents the conceptual models of both aquifers and their interconnectedness using separate mathematical-numerical models with the aim of ensuring an integrated management of these alluvial aquifer systems. It also highlights the importance of understanding connections between such systems for simulating groundwater flow and transport of different contaminants.
Ključne besede: hydrogeological model, Modflow model, aquifer geometry, aquifer recharge, modelling
Objavljeno v DiRROS: 27.03.2023; Ogledov: 486; Prenosov: 167
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53. Psevdoprogres : terapevtska zagata v imunoterapijiTadeja Skok, Nina Boc, 2023, objavljeni znanstveni prispevek na konferenci Povzetek: Sistemsko zdravljenje z imunoterapijo je v klinično prakso prineslo nove, atipične vzorce odgovorov solidnih tumorjev na zdravljenje ter tako vplivalo na radiološko oceno odgovora na terapijo. Psevdoprogres je opredeljen kot začetno povečanje bremena bolezni s kasnejšim zmanjšanjem. Pri hiperprogresu pride do hitrega povečanja tumorskega bremena, pogosto v povezavi s kliničnim poslabšanjem. Trenutno najbolj uporabljeni iRECIST kriteriji za oceno učinka imunoterapije so bili objavljeni leta 2017 ter temeljijo na osnovi kriterijev RECIST 1.1. Najpomembnejša razlika med osnovnimi RECIST kriteriji ter iRECIST kriteriji je uvedba dodatnih kontrolnih preiskav za potrditev napredovanja bolezni.
Ključne besede: imunoterapija, onkologija, onkološko zdravljenje
Objavljeno v DiRROS: 16.02.2023; Ogledov: 506; Prenosov: 232
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58. Prediktivna vloga tumorske limfocitne infiltracije za dosego popolnega patološkega odgovora po predoperativnem sistemskem zdravljenju pri zgodnjem raku dojkeKlara Geršak, Barbara Gazić, Andreja Klevišar Ivančič, Primož Drev, Nina Ružić Gorenjec, Cvetka Grašič-Kuhar, 2022, objavljeni povzetek strokovnega prispevka na konferenci Ključne besede: onkologija, rak dojke, kemoterapija
Objavljeno v DiRROS: 03.02.2023; Ogledov: 441; Prenosov: 103
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59. On the influence of aging on classification performance in the visual EEG oddball paradigm using statistical and temporal featuresNina Omejc, Manca Peskar, Aleksandar Miladinović, Voyko Kavcic, Sašo Džeroski, Uroš Marušič, 2023, izvirni znanstveni članek Povzetek: The utilization of a non-invasive electroencephalogram (EEG) as an input sensor is a common approach in the field of the brain–computer interfaces (BCI). However, the collected EEG data pose many challenges, one of which may be the age-related variability of event-related potentials (ERPs), which are often used as primary EEG BCI signal features. To assess the potential effects of aging, a sample of 27 young and 43 older healthy individuals participated in a visual oddball study, in which they passively viewed frequent stimuli among randomly occurring rare stimuli while being recorded with a 32-channel EEG set. Two types of EEG datasets were created to train the classifiers, one consisting of amplitude and spectral features in time and another with extracted time-independent statistical ERP features. Among the nine classifiers tested, linear classifiers performed best. Furthermore, we show that classification performance differs between dataset types. When temporal features were used, maximum individuals’ performance scores were higher, had lower variance, and were less affected overall by within-class differences such as age. Finally, we found that the effect of aging on classification performance depends on the classifier and its internal feature ranking. Accordingly, performance will differ if the model favors features with large within-class differences. With this in mind, care must be taken in feature extraction and selection to find the correct features and consequently avoid potential age-related performance degradation in practice.
Ključne besede: aging, elderly, machine learning, visual oddball study, brain-computer interface
Objavljeno v DiRROS: 01.02.2023; Ogledov: 430; Prenosov: 221
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60. Analysis of the geological control on the spatial distribution of potentially toxic concentrations of As and F- in groundwater on a Pan-European scaleElena Giménez-Forcada, Juan Antonio Luque-Espinar, María Teresa López-Bahut, Juan Grima-Olmedo, Jorge Jiménez-Sánchez, Carlos Ontiveros-Beltranena, José Angel Díaz-Muñoz, Daniel Elster, Ferid Skopljak, Denitza D. Voutchkova, Birgitte Hansen, Klaus Hinsby, Jörg Schullehner, Eline Malcuit, Laurence Gourcy, Teodóra Szőcs, Nóra Gál, Daði Þorbjörnsson, Katie Tedd, Dāvis Borozdins, Henry Debattista, Nina Rman, 2022, izvirni znanstveni članek Povzetek: The distribution of the high concentrations of arsenic (As) and fluoride (F-) in groundwater on a Pan-European scale could be explained by the geological European context (lithology and structural faults). To test this hypothesis, seventeen countries and eighteen geological survey organizations (GSOs) have participated in the dataset. The methodology has used the HydroGeoToxicity (HGT) and the Baseline Concentration (BLC) index. The results prove that most of the waters considered in this study are in good conditions for drinking water consumption, in terms of As and/or F- content. A low proportion of the analysed samples present HGT≥ 1 levels (4% and 7% for As and F-, respectively). The spatial distribution of the highest As and/or F- concentrations (via BLC values) has been analysed using GIS tools. The highest values are identified associated with fissured hard rock outcrops (crystalline rocks) or Cenozoic sedimentary zones, where basement fractures seems to have an obvious control on the distribution of maximum concentrations of these elements in groundwaters.
Ključne besede: trace elements, arsenic fluoride, groundwater, geo-hydrochemistry, spatial analysis
Objavljeno v DiRROS: 30.01.2023; Ogledov: 1016; Prenosov: 229
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