Browsing by Author "Romero Lafuente, Sergio"
Now showing items 1-20 of 49
-
A comparative study of automatic techniques for ocular artifact reduction in spontaneous EEG signals based on clinical target variables: a simulation case
(ELSEVIER, 2008-03)
Article
Open AccessEye movement artifacts represent a critical issue for quantitative electroencephalography (EEG) analysis and a number of mathematical approaches have been proposed to reduce their contribution in EEG recordings. The aim ... -
Acute sleep deprivation induces a local brain transfer information increase in the frontal cortex in a widespread decrease context
(2016-04-01)
Article
Open AccessSleep deprivation (SD) has adverse effects on mental and physical health, affecting the cognitive abilities and emotional states. Specifically, cognitive functions and alertness are known to decrease after SD. The aim of ... -
Alterations in EEG connectivity in healthy young adults provide an indicator of sleep depth
(2019-06-11)
Article
Open AccessCurrent sleep analyses have used electroencephalography (EEG) to establish sleep intensity through linear and nonlinear measures. Slow wave activity (SWA) and entropy are the most commonly used markers of sleep depth. The ... -
Aplicación de la entropía condicional para el análisis del EEG bajo terapia farmacológica
(CEA, 2009)
Conference lecture
Restricted access - publisher's policyEl análisis del electroencefalograma humano constituye una herramienta muy útil para la evaluación de la biodisponibilidad de un fármaco en el cerebro. Se ha aplicado el calculo de entropía condicional a señales ... -
Assessment of the pharmacological effects of alprazolam on electroencephalography using connectivity indexes not affected by volume conduction
(2015)
Conference lecture
Open AccessElectroencephalographic analysis techniques have become a very useful tool to assess brain activity and interactions between cerebral regions, that is, the so-called cerebral connectivity analysis. The effects of some drugs ... -
Auditory P3a and P3b neural generators in schizophrenia: An adaptive sLORETA P300 localization approach
(2015-12)
Article
Open AccessThe present study investigates the neural substrates underlying cognitive processing in schizophrenia (Sz) patients. To this end, an auditory 3-stimulus oddball paradigm was used to identify P3a and P3b components, elicited ... -
Automated detection of epileptic ripples in MEG using beamformer-based virtual sensors
(2017-08-01)
Article
Open AccessObjective. In epilepsy, high-frequency oscillations (HFOs) are expressively linked to the seizure onset zone (SOZ). The detection of HFOs in the noninvasive signals from scalp electroencephalography (EEG) and magnetoence ... -
Automatic BSS-based filtering of metallic interference in MEG recordings: definition and validation using simulated signals
(2015-05-27)
Article
Open AccessObjective. One of the principal drawbacks of magnetoencephalography (MEG) is its high sensitivity to metallic artifacts, which come from implanted intracranial electrodes and dental ferromagnetic prosthesis and produce a ... -
Choosing strategies to deal with artifactual eeg data in children with cognitive impairment
(2021-08-11)
Article
Open AccessRett syndrome is a disease that involves acute cognitive impairment and, consequently, a complex and varied symptomatology. This study evaluates the EEG signals of twenty-nine patients and classify them according to the ... -
Choosing strategies to deal with artifactual EEG data in children with cognitive impairment
(2020)
Conference lecture
Open AccessRett syndrome is a disease that involves acute cognitive impairment and, consequently, a complex and varied symptomatology. This study evaluates the EEG signals of twenty-nine patients in order to implement an effective ... -
Cognitive stimulation has potential for brain activation in individuals with Rett syndrome
(John Wiley & sons, 2021-11-18)
Article
Open AccessBackground: Knowledge regarding neuropsychological training in Rett syndrome (RS) is scarce. The aim of this study was to assess the outcome and the duration of the effect of cognitive stimulation on topographic EEG data ... -
Cognitive stimulation leads to a long-term brain activation with a spectral shift to higher frequencies in Rett syndrome patients
(Universidad de Valladolid, 2022)
Conference lecture
Open AccessRett syndrome (RTT) is the second leading cause of mental disability in women and causes a serious neurodevelopmental disorder that leads to a global disability of the individual. Cognitive training has been shown to improve ... -
Cross-conditional entropy and coherence analysis of pharmaco-EEG changes induced by alprazolam
(2012-03)
Article
Restricted access - publisher's policyRationale Quantitative analysis of electroencephalographic signals (EEG) and their interpretation constitute a helpful tool in the assessment of the bioavailability of psychoactive drugs in the brain. Furthermore, ... -
Daytime Ayahuasca administration modulates REM and slow-wave sleep in healthy volunteers
(2008-02)
Article
Open AccessAyahuasca is a traditional South American psychoactive beverage and the central sacrament of Brazilianbased religious groups, with followers in Europe and the United States. The tea contains the psychedelic indole ... -
Drug effect on EEG connectivity assessed by linear and nonlinear couplings
(2010-03)
Article
Restricted access - publisher's policyQuantitative analysis of human electroencephalogram (EEG) is a valuable method for evaluating psychopharmacological agents. Although the effects of different drug classes on EEG spectra are already known, interactions ... -
Effects of olanzapine, risperidone and haloperidol on sleep after a single oral morning dose in healthy volunteers
(2007-03)
Article
Open AccessTo compare the effects of typical and atypical antipsychotic drugs on sleep activity and subjective sleep quality. Design Randomised, double-blind, placebo-controlled, four-period cross-over, clinical trial was used ... -
Epileptic seizure prediction and onset zone localization using intracranial and scalp electroencephalographic and magnetoencephalographic signals
(Institute of Physics (IOP), 2020-09)
Part of book or chapter of book
Restricted access - publisher's policyIn this chapter, we discuss how intracranial or scalp electroencephalographic and magnetoencephalographic recordings could be used for epileptic seizure prediction and onset zone localization. The signal processing methods ... -
Estudi de la connectivitat cerebral durant la vigília prolongada
(EUETIB, 2014-12-01)
Conference report
Open AccessEn aquest estudi s’avaluen els efectes de la privació de son sobre el senyals electroencefalogràfics de voluntaris sans mitjançant la transferència d’entropia (TE), una tècnica no paramètrica que permet detectar dependències ... -
Estudio de la conectividad cerebral mediante transferencia de entropía
(2014)
Conference lecture
Open AccessEn el presente trabajo se estudian los efectos de la privación del sueño sobre las señales electroencefalográficas de voluntarios sanos mediante la transferencia de entropía (TE), una técnica no paramétrica que permite ... -
Evaluation of multiple comparison correction procedures in drug assessment studies using LORETA maps
(2015-10-01)
Article
Open AccessThe identification of the brain regions involved in the neuropharmacological action is a potential procedure for drug development. These regions are commonly determined by the voxels showing significant statistical differences ...
