Patrique Fiedler

#376 Dry electroencephalography with comfortable flower electrodes

Patrique Fiedler, Jens Haueisen

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Electrochemical Characterization of Commercial Electroencephalography Bioelectrodes in Isotonic Saline Solution

Alexandra Cruz Alves, Patrique Fiedler, Carlos Fonseca

The electrochemical performance of eight commercially available bioelectrodes for electrophysiological measurements was systematically evaluated in isotonic saline solution. The studied bioelectrodes included sintered Ag/AgCl pellet, cup and ring, an Ag/AgCl multipin, tin (Sn) ring and disc, a gold cup, and a stainless-steel …

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Influence of patients’ sex on radiomics-based predictions of lung artery thrombus

Lea Ehrhardt, Georg Hille, Ehsan Amini, Alexey Surov et autres

PURPOSE: This study investigates possible differences of female and male patients' data in regard to the prediction of mortality and troponin level of acute pulmonary embolism (APE) patients. Radiomics features are utilized to gain insights of sex-specific image properties, which should support …

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Hardware Prototype of a Wearable and End-to-End EEG-Gaming Controller using Flower Electrodes

Nick Skillandat, Hasan Nehir, Christopher Ringhofer, Lukas Einhaus et autres

This paper presents the front-end performance of a hardware prototype to enable an EEG-based gaming controller as wearable brain-computer interface (BCI). The system achieves high signal fidelity through an eight channel analog front-end (AFE) with active-shielded cables, high input impedance (>1GΩ), ultra-low …

Suppressing Non-Stationary Motion Artefacts in Mobile EEG Using Generalized Eigenvalue Decomposition

Mohammad Khazaei, Khadijeh Raeisi, Patrique Fiedler, Pierpaolo Croce et autres

Mobile EEG enables investigating brain activity during real-world behaviour, but remains susceptible to motion artefacts, limiting signal interpretability and the use of advanced analytical techniques. Methods developed for removing motion-related artefacts induced by periodic activity like cycling, walking or juggling showed degraded …

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Comfortable Flower Electrodes for Dry EEG in Epilepsy and Clinical Neurophysiology Diagnostics

Dimitrios Dimitrakopoulos, Justus Carl Marquetand, Joji B. Kuramatsu, Patrique Fiedler et autres

Dry electroencephalography (EEG) electrodes enable rapid, gel-free setups, which are crucial for point-of-care diagnostics, but often face challenges with comfort and signal quality-especially in a clinical context. Novel "flower" dry electrodes are a special type of reusable scalp electrodes for dry EEG, …

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Comfortable flower electrodes for dry EEG in epilepsy and clinical neurophysiology diagnostics

Dimitrios Dimitrakopoulos, Justus Carl Marquetand, Joji B. Kuramatsu, Patrique Fiedler et autres

What are the main findings? Novel dry electrodes, featuring a flower design (“flower electrodes”), offer a sufficient signal-to-noise ratio (SNR) for clinical neurophysiological diagnostics. The electrodes were tested in a clinical setting with three patients with epilepsy and delirium, providing preliminary evidence …

Fascination Biosignals a Python Based Toolbox for Demonstration and Teaching of Biosignal Processing

Hannes Oppermann, Erik Kunert, Dominik Lampl, Jannik Sander et autres

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Validation of an Automated Seizure Detection Procedure for Multi-Channel Neonatal EEG

Cris Micheli, Antonia Thelen, Maarten De Vos, A Dereymaeker et autres

This study validates an automated seizure detection algorithm for multi-channel neonatal EEG, adapting a previously published method to a dataset with fewer electrodes. The Python-based implementation, SDApy, was applied to EEG recordings from 23 neonates to classify seizure and non-seizure epochs using …

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Brain power comparison between microgravity and head-down tilt bed rest: an electroencephalography approach

María Agustina Sevilla-García, Adrián Quivira‐Lopesino, Pablo Cuesta, Sandra Angelica Pusil et autres

This study examines neurophysiological changes in microgravity by comparing EEG data from two ground analog 60-day head-down tilt bed rest (HDBR) experiments (ESA/DLR "Cocktail" and "RSL") and the NEUROSPAT experiment in space. The primary objective was to determine whether HDBR could effectively …

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Prognostic potential of radiomics evaluation of lung artery thrombus for pulmonary embolism patients

Lea Ehrhardt, Patrique Fiedler, Alexey Surov, Sylvia Saalfeld

PURPOSE: This study evaluates radiomics correlation with mortality and suitability as prognostic indicator for troponin for pulmonary embolism to enhance prognostic accuracy and guide personalized treatment strategies with the help of machine learning. We conducted an initial study focusing on texture information …

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Head-Specific Spatial Spectra of Electroencephalography Explained: A Sphara and BEM Investigation

Uwe Graichen, Sascha Klee, Patrique Fiedler, Lydia Hofmann et autres

Electroencephalography (EEG) is a non-invasive biosensing platform with a spatial-frequency content that is of significant relevance for a multitude of aspects in the neurosciences, ranging from optimal spatial sampling of the EEG to the design of spatial filters and source reconstruction. In …

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