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  • Journal Of Epileptology
  • Acta Neurobiologiae Experimentalis


Research Article

Analyzing and Processing EEG-based Multichannel Signals Acquired during Sleeping

Processing of signals acquired from sensor systems needs accurate algorithms to extract information of interest concerning the problem under study. In this work Empirical Mode Decomposition method is used on EEG signals obtained during polysomnography examination, when electromyographic (EMG) signals are acquired too. EMD method decomposes a signal into components named Intrinsic Mode Functions (IMF) which can exhibit important time-frequency information related to signals under observation

P. Vergallo, A. Lay-Ekuakille, N.I. Giannocaro, A. Trabacca, R. Della Porta, M. De Rinaldis

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–4


EEG correlates of cognitive load in a multiple choice reaction task

tasks were relatively easy due to small amount of S-R mappings which should be maintained in WM during task performance. In contrast, little is known about inhibition processes in choice reaction tasks with multiple S-R mappings, which maintenance would widely exceed the WM capacity (i.e. three chunks of associative information, see Cowan et al., 2012). The electroencephalogram (EEG) is a widely acknowledged and valid method for assessing cognitive load. The majority of EEG studies have reported

Sergei A. Schapkin, Jonas Raggatz, Markus Hillmert, Irina Böckelmann

Acta Neurobiologiae Experimentalis , ISSUE 1, 76–89



This paper aims to analyze the optimization of Epilepsy risk levels from EEG signals using Fuzzy based Elman-Chaotic Optimization. The EEG (Electroencephalogram) signals of twenty patients are collected from Sri Ramakrishna Hospitals at Coimbatore. The raw EEG signals are sampled and various parameters like energy, energy, variance, peaks, sharp and spike waves, duration, events and covariance. The fuzzy techniques are applied as a first level classifier to classify the risk levels of epilepsy

Dr.R HariKumar, T. Vijayakumar

International Journal on Smart Sensing and Intelligent Systems , ISSUE 4, 612–635

Original Paper

EEG characteristics of déjà vu phenomenon

volunteers (n = 139) and epilepsy patients (n = 27). The subjects participated in a survey concerning déjà vu characteristics and in a long-time ambulatory EEG monitoring (12–16 h). Results. In epilepsy patients, DV episodes were equally frequent in cryptogenic and symptomatic focal epilepsy, occurred in combination with nearly all types of seizures, and could occur both as an aura and as an individual seizure. The major clinical features distinguishing DV in healthy subjects from DV

Alexander V. Chervyakov, Victor V. Gnezditskii, Pavel N. Vlasov, Galina V. Kalmykova

Journal of Epileptology , ISSUE 1, 27–35


Pain catastrophizing is associated with altered EEG effective connectivity during pain-related mental imagery

-based connectivity, we chose to study EEG effective connectivity patterns. Methods for investigating complex interplay between brain regions using EEG have been carefully developed and have already begun to gain significant recognition in the field (Gómez et al., 2009; Leung et al., 2014; Li et al., 2017; Koelewijn et al., 2017). This progress may be related to several advantages of the technique. Firstly, EEG offers a noninvasive and easy-to-use method for measuring connectivity. For this reason

Magdalena A. Ferdek, Agnieszka K. Adamczyk, Clementina M. van Rijn, Joukje M. Oosterman, Miroslaw Wyczesany

Acta Neurobiologiae Experimentalis , ISSUE 1, 53–72

Case report

The diagnostic dilemma of non-convulsive status epilepticus in sporadic Creutzfeldt-Jakob disease

Introduction. The differentiation between the clinical and electroencephalographic changes in nonconvulsive status epilepticus (NCSE) and those in sporadic Creutzfeldt-Jakob disease (sCJD) is a crucial question. Case report. A 77-year old woman was admitted because of fluctuating behavioural chancaseges, adynamia and apraxia since several months for diagnostic. The diagnosis of sCJD was suggested. Subsequently, she had a generalized tonic clonic seizure (GTCS) and the EEG revealed periodic

Matthias Wittstock, Uwe Walter, Daniela Schirrmeister, Kyrylo Kurtieiev, Jan Klinke, Annette Grossmann, Johannes Rösche

Journal of Epileptology , ISSUE 1-2, 53–58

Research paper


In this paper, a new left-handedness sensing and detection module, has been developed to classify the handedness of a person. Handedness of the person can be determined from the EEG data captured and further confirmed using a simple game as testing module. EEG signals were obtained from three locations namely A1, O1 and O2. The signals were then classified into four different frequency bands: Alpha, Beta, Delta and Theta before they were used to determine the Mean EEG Coherence. Generally the

Leong .W.Y, Andrew Ng C.R

International Journal on Smart Sensing and Intelligent Systems , ISSUE 2, 442–457

Research paper

The relationship between alpha burst activity and the default mode network

Alpha rhythm, described by Hans Berger, is mainly recorded from the occipital cortex (OCC) of relaxed subjects with their eyes closed. Early studies indicated the thalamo-cortical circuit as the origin of alpha rhythm. Recent works suggest an additional relationship between alpha rhythm and the Default Mode Network (DMN). We simultaneously recorded electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) signals in 36 young males asked to alternately close and open their

Mateusz Rusiniak, Andrzej Wróbel, Katarzyna Cieśla, Agnieszka Pluta, Monika Lewandowska, Joanna Wójcik, Piotr H. Skarżyński, Tomasz Wolak

Acta Neurobiologiae Experimentalis , ISSUE 2, 92–106


Dexamethasone induces alterations of slow wave oscillation, rapid eye movement sleep and high-voltage spindle in rats

not had significant impact on neurodegenerative intervention for the mass population due to sparse availability of the techniques. Subsequently, other non-invasive and non-expensive techniques have been researched. Among the various approaches, electroencephalography (EEG) has ained enormous attention. Originally, it was primarily used for epilepsy research and treatment (Minasyan et al., 2010). However, it has also been recognized as a useful tool for purposes including diagnosis of depression

Acharaporn Issuriya, Ekkasit Kumarnsit, Chayaporn Reakkamnuan, Nifareeda Samerphob, Pornchai Sathirapanya, Dania Cheaha

Acta Neurobiologiae Experimentalis , ISSUE 3, 252–261

Research paper

The use of MR-less MNI based neuronavigation for 10 Hz rTMS depression therapy: electrophysiological and clinical implications

into 3 groups according to stimulation target in MNI map: Group 1 received rTMS at point -40; 48; 35; Group 2 received rTMS at point -46; 45; 38; Group 3 received rTMS at point -38; 44; 26. Electroencephalography (EEG) recordings and clinical tests were obtained the day before the rTMS course and after the last session. There were some notable differences in physiological changes between the groups, with the largest EEG band spectral power increases found in Group 1 patients and the lowest in Group

Vladas Valiulis, Giedrius Gerulskis, Kastytis Dapšys, Karolina Valavičiūtė, Aldona Šiurkutė, Valentinas Mačiulis

Acta Neurobiologiae Experimentalis , ISSUE 3, 271–280

Research Article


Sleep apnea is a growing sleep disorder issue and estimate to affect 7% of the adult population in Malaysia. In this study, the electrical activity of the brain is studied using Electroencephalogram (EEG). The data obtained was then decomposed using three methods; Empirical Mode Decomposition (EMD), Bivariate EMD and finally Ensemble EMD. The Index of Orthogonatility (IO) was obtained which shows EMD performed the most poorly, EEMD the best and Bivariate in between. The performance of EMD


International Journal on Smart Sensing and Intelligent Systems , ISSUE 2, 481–497

Research paper

EEG source activity during processing of neutral stimuli in subjects with anxiety disorders

Anxiety disorders are a social problem due to their prevalence and consequences. It is crucial to explore the influence of anxiety on cognitive processes. In this study we recorded EEG activity from 73 subjects (35 patients, 38 controls, matched for age and education)during performance of the Continuous Attention Task. We used low resolution electromagnetic tomography (LORETA) for evaluation of mechanisms of impaired cognitive performance in anxiety disorders. Analysis showed that

Bartłomiej Gmaj, Piotr Januszko, Jan Kamiński, Ewa Drozdowicz, Maciej Kopera, Dorota Wołyńczyk-Gmaj, Waldemar Szelenberger, Marcin Wojnar

Acta Neurobiologiae Experimentalis , ISSUE 1, 75–85

Review Paper

Presurgical diagnosis of epilepsies – concepts and diagnostic tools

zones are characterized. The epileptogenic lesion, the “eloquent cortex” and secondary epileptogenesis (mirror focus) are dealt with. The current diagnostic techniques used in the definition of these cortical zones, such as video-EEG monitoring, non-invasive and invasive EEG recording techniques, magnetic resonance imaging, ictal single photon emission computed tomography, and positron emission tomography, are discussed and illustrated. Potential modern surrogate markers of

Heinz Gregor Wieser

Journal of Epileptology , ISSUE 2, 115–140

Case report

Epileptic seizure propagation from the second somatic sensory area to the fronto-medial region, by insular redistribution. A case report and a connectome description

by way of a connectome. Methods. The epileptic disorder was studied with intensive video EEG monitoring and two times 3T MRI. Interictal FDG (fluorodeoxyglucose) PET was also undertaken. Beside the scalp EEG and computerized frequency analysis, the evaluation was performed by invasive EEG with 2 grids and 2 strips and an insular deep electrode in addition. Electrical cortical stimulation and cortical mapping were also undertaken. Results. The video-EEG study revealed the complex seizure semiology

Attila Balogh, Péter Halász, Dániel Fabó, Lóránd Erőss

Journal of Epileptology , ISSUE 1, 61–67

Original Paper

Lateralized periodic discharges associated with status epilepticus in the first year after stroke

Backgrand. Lateralized periodic discharges (LPDs) are infrequent electroencephalograph (EEG) findings, and may present in ictal or interictal form. They are regarded as potential electrophysiologic signs of convulsive or nonconvulsive status epilepticus (NCSE). We report four patients who presented with NCSE and one who presented with convulsive status epilepticus in the postictal period, characterized by LPDs in EEG recordings in the first year after stroke. Material and methods. We

Hava Ozlem Dede, Nerses Bebek, Ozlem Gelisin, Murat Mert Atmaca, Nilufer Yesilot Barlas, Candan Gurses, Betul Baykan, Aysen Gokyigit

Journal of Epileptology , ISSUE 1, 15–23


When is the brain ready for mental actions? Readiness potential for mental calculations

electroencephalography (EEG), we then investigated whether RPs can be also observed prior to purely mental voluntary actions. Thus, in addition to preparation for actual finger movements – a kind of replication of a study by Kornhuber and Deecke (1965), or imagined index finger movements (cf. Jankelowitz and Colebatch, 2002), the key task was preparation for performance of a simple mental action (here: arithmetic calculation). Fig. 1. The simplified Libet clocks. Left panel: the clock with the spot revolving as in

Maciej Raś, Agnieszka M. Nowik, Andrzej Klawiter, Grzegorz Króliczak

Acta Neurobiologiae Experimentalis , ISSUE 4, 386–398

Case report

Ictal Forced Repetitive Swearing in Frontal Lobe Epilepsy: Case report and review of the literature

Introduction. Dominant presentation of ictal forced repetitive swearing has been rarely addressed and could be misdiagnosed. Case report. We report a 45-year-old man with a long history of right frontal lobe epilepsy (FLE) who developed forced repetitive swearing during hypermotor seizures. His seizures were refractory to different antiepileptic drugs (AEDs). Scalp video-EEG telemetry suggested a right frontal epileptic focus. Magnetic resonance imaging (MRI) suggested focal cortical dysplasia

Marjan Dolatshahi, Alexei Yankovsky

Journal of Epileptology , ISSUE 2, 113–119


Clinical characteristics of forced normalization and alternative psychosis with special consideration of the new anticonvulsants

passed away two months later. Since the 18th century the phenomenon of the alternation of seizures and psychiatric disturbances has been recognised in some patients. This phenomenon was characterized as “forced normalization“ (of the EEG) by Landolt (1955). Landolt was an expert in epileptology and electroencephalography (EEG) and focused more on the changes of the EEG than on the clinical presentation. Ten years later Tellenbach (1965), a psychiatrist, coined the term “Alternativpsychose“, in

Walter Fröscher, Volker Faust, Tilman Steinert

Journal of Epileptology , 7–13

Research paper

The influence of mood on visual perception of neutral material

Miroslaw Wyczesany, Tomasz S. Ligeza, Agnieszka Tymorek, Agnieszka Adamczyk

Acta Neurobiologiae Experimentalis , ISSUE 2, 163–172



PNES: A PUBLIC HEALTH ISSUE Psychogenic Non-Epileptic Seizures (PNES) are defined by their semiological resemblance to Epileptic Seizures (ES) but are not associated with specific epileptic discharges in an ictal EEG (Asadi-Pooya and Sperling, 2015). Most PNES are thought to be non-volitional responses to internal or external triggers perceived as threatening or challenging (Asadi-Pooya and Sperling, 2015; Brown and Reuber, 2016). The incidence of PNES has been found to be 1.4–4.9/100,000/year

Massimiliano Beghi, Cesare Maria Cornaggia, Ettore Beghi

Journal of Epileptology , 27–32


Diazepam and electrical stimulation of paleocerebellar cortex inhibits seizures in pentylenetetrazol-kindled rats

, while another 38 animals were excluded based on surgical outcomes described below. Study design In all groups, kindled rats were subjected to testing PTZ administrations (Fig. 1). We scored the seizures following the last (21st) PTZ administration twice in control and experimental (Fig. 1A) groups. The first session was performed 24 h after the last (21st) PTZ administration for scoring behavioral seizures only (Fig. 1A). The second session was conducted for scoring EEG-responses to ES in the

Leonid S. Godlevsky, Oleksii O. Shandra, Mykhailo P. Pervak, Alexey A. Shandra

Acta Neurobiologiae Experimentalis , ISSUE 3, 322–330

Case report

Burns from foul play? No – previously unsuspected epilepsy

Introduction. Injuries such as burns may occur from unwitnessed and unsuspected new onset epilepsy with forensic implications. Case report. A young woman was found with >25% 2nd and 3rd degree body burns after an unwitnessed morning event in a shower. Discussion. The onset of tonic-clonic seizures and limb jerks in adolescence with a typical EEG recording of 3–4/second spike/polyspike-and-waves are diagnostic of Juvenile Myoclonic Epilepsy (JME). Worldwide there is a significant

Peter W. Kaplan

Journal of Epileptology , ISSUE 2, 105–107

Congress Report

20th Annual Meeting of the German-Austrian-swiss epilepsy Working Group

Hermann Stefan

Journal of Epileptology , ISSUE 2, 123–125

Review Paper

Jeavons syndrome – updated review

) epilepsy syndrome (IGE) characterized by eyelid myoclonia, other seizures (absences, myoclonic and or generalized tonic-clonic) and EEG paroxysms induced by voluntary or on command eye closure, in the light and photosensitivity. Demographical data: The prevalence of JS has been reported to vary from 7.3% to 12.9% among idiopathic generalized epilepsies and 2.5% to 2.7% among all patients with epileptic disorders. Etiology: JS, as is the case for all idiopathic generalized epilepsies, is genetic and the

Athanasios Covanis

Journal of Epileptology , ISSUE 2, 113–123

Review Paper

Sudden Unexpected Death In Epilepsy (SUDEP) – an update

and risk of SUDEP are identified and proposed to use in its prevention: heart rate variability, long and short QT, arrhythmias, asystole, oxygen desaturation, apneas, hypoxia, postictal EEG suppression, circadian seizure pattern. Conclusions. Risk factors for SUDEP, AEDs effects, non-AED management of preventive options and forensic autopsy in diagnosis of SUDEP are discussed. Periictal long term video EEG, ECG and oxygen saturation monitoring may contribute to better understanding of SUDEP

Jerzy Majkowski

Journal of Epileptology , ISSUE 1, 37–54


The short-term efficacy of combined hormone therapy in West syndrome

. Currently, preference is given to hormone therapy. The exception are IS in tuberous sclerosis, because of its unparalleled efficacy. It is generally accepted that hormone therapy versus VGB results in a higher rate of IS cessation and EEG normalization, as well as better other treatment outcomes, including cognitive improvement (Lux et al., 2004; Riikonen, 2014; Wilmshurst et al., 2015). Hormone therapy remains largely empirical. The drug choice of hormone type is often defined by its availability in

Iosif V. Volkov, Oksana K. Volkova, Olga S. Tashkinova, Elena D. Belousova

Journal of Epileptology , ISSUE 1-2, 55–61


Successful BCI communication via high-frequency SSVEP or visual, audio or tactile P300 in 30 tested volunteers

INTRODUCTION With substantial progress in electroencephalogram (EEG) recording and analysis technologies, brain-computer interfaces (BCI) are on the verge of becoming a useful tool in a range of applications from industry, medicine and rehabilitation to gaming and entertainment (Brunner et al., 2015). In this light, one of the major open questions, namely “Could anyone use a BCI?” becomes more and more important. This question was used as the title of a book chapter (Allison and Neuper, 2010

Anna Chabuda, Marian Dovgialo, Anna Duszyk, Anna Stróż, Maciej Pawlisz, Piotr Durka

Acta Neurobiologiae Experimentalis , ISSUE 4, 421–431

Original Paper

The pathophysiology of Lennox-Gastaut syndrome – a review of clinico-electrophysiological studies

tonic seizures that persist and are the basis of LGS. In approximately 30% of cases, the basic symptoms of LGS remain 10 years or longer after long-term progression, while the rest lose their characteristics, although the condition is residual in 60% of cases and remission occurs in fewer than 10%. Among the characteristic seizures associated with LGS, atypical absence seizures occur in response to a diverse range of EEG features; wherein, while they are mostly short, they are accompanied by a state

Kazuichi Yagi

Journal of Epileptology , ISSUE 1, 7–23

Research paper

Detection of P300 brain waves using a MagnetoImpedance sensor

magnetic shielding. In this study, we recorded P300 brain waves of subjects, compared our results with our past studies and other EEG and MEG data reported previously. The results confirmed the reliability of our data and indicated that the MI sensor can be applied on brain activity detection.

K. Wang, S. Tajima, Y. Asano, Y. Okuda, N. Hamada, C. Cai, T. Uchiyama

International Journal on Smart Sensing and Intelligent Systems , ISSUE 5, 1–4

Original Paper

The lateralizing and localizing value of peri-ictal cough in epileptic seizures

Bektaş Korkmaz, Gülsün Erşen, Şakir Delil, Çiğdem Özkara, S. Naz Yeni

Journal of Epileptology , ISSUE 2, 71–77

Review Paper

Encephalopathy with Electrical Status Epilepticus in Slow Wave Sleep – a review with an emphasis on regional (perisylvian) aspects

same EEG evolution and encephalopathic cognitive consequences. The sleep EEG activation can be held as a common endophenotype. ESES represents an extreme sleep activation/potentiation of the local/regional interictal discharges, enhancing them in frequency, territorial extension, intra and trans-hemispherial propagation, synchrony and continuity. This process is most probably not identical with the development of bilateral spike-wave pattern in „generalized” epilepsies which involves

Peter Halász, Márta Hegyi, Zsuzsa Siegler, András Fogarasi

Journal of Epileptology , ISSUE 2, 71–87

Research paper

Functional correlates of brain aging: beta and gamma components of event-related band responses

Mario Christov, Juliana Dushanova

Acta Neurobiologiae Experimentalis , ISSUE 2, 98–109

Review Paper

Biofeedback as complementary treatment in patients with epilepsy – an underestimated therapeutic option? Review, results, discussion

publications containing the search terms "biofeedback", "neurofeedback" or "neurotherapy" and "epilepsy" or "seizure" for intervention and population search terms respectively. Results. Four different techniques of biofeedback were used to improve seizure frequency in patients with epilepsy. Three of these techniques, measuring EEG (slow cortical potentials and sensory motor rhythm) or electrodermal activity (galvanic skin response, GSR) seem to be

Carmen Uhlmann, Walter Fröscher

Journal of Epileptology , ISSUE 2, 173–180


Determinants of medication withdrawal strategy in the epilepsy monitoring unit*

BACKGROUND Video-EEG monitoring is a vital diagnostic tool in epilepsy. It is the gold standard in distinguishing epilepsy from non-epileptic seizures and is also used in presurgical evaluation of drug-resistant epilepsy. Questions remain regarding the optimal management of patients during VEEG admission. Previous work on duration of monitoring found that 3–5 days is average (Nordli, 2006; Hupalo et al., 2016). In patients with frequent events the majority had a typical event within two days

Alendia Hartshorn, Yasser Shahrour, Angeline S. Andrew, Krzysztof Bujarski

Journal of Epileptology , ISSUE 1-2, 15–19

Original Paper

Variations in cognitive functioning in genetic generalized epilepsy: four case studies

photosensitivity and kinds of reflexive seizures. Method. Neurological and cognitive performance was assessed by comprehensive evaluation of each patient based on interviews, neurologist’s EEG reports and neuropsychological tests. Assessment of cognitive domains included estimated pre-morbid I.Q. based on reading ability and demographic norms, current I.Q., attention factors, verbal memory, visual memory and executive functions. Results. Clinical signs and investigative studies indicated that two cases

Evangelina E. Ballini, Edward Helmes, Bruce K. Schefft

Journal of Epileptology , ISSUE 1, 25–37


Differences in spatio-temporal distribution of the visual P3b event-related potential between young men and women

topography of the P3b potential is consistently determined in both the standard and three-stimulus oddball tasks and in visual modality. Maximum amplitude of this potential, measured on the scalp surface via EEG electrodes, can be observed at parietal regions with a broad peak around 300–450 ms after the onset of the stimulus (Polich, 2007; Volpe et al., 2007; Lafuente et al., 2017). The latency of the P3b potential is shorter over frontal regions and longer over parietal regions (Polich, 2007). The P3b

Karina Maciejewska, Zofia Drzazga

Acta Neurobiologiae Experimentalis , ISSUE 1, 25–38

Original Paper

Neurobiological and clinical predictors of remission and antiepileptic treatment efficacy in partial epilepsies

epilepsy. Material and methods. One hundred and eight patients were studied. Handedness was evaluated using the Annett’s scale. Focus lateralization was detected by use of the EEG. Of the patients studied temporal lobe epilepsy (TLE) was diagnosed in 61 cases and frontal lobe epilepsy (FLE) in 47 cases. There were 44 men and 64 women, of which 83 were right-handed and 25 were left-handed. A left-sided focus was detected in 59 persons whilst a right-sided focus was noted in 49 persons. MANOVA was

Vladimir V. Kalinin, Anna A. Zemlyanaya, Elena V. Zheleznova, Lyudmila V. Sokolova

Journal of Epileptology , ISSUE 1, 15–25

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