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Journal articles on the topic 'Ictal EEG'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Shahaf, Goded, Pora Kuperman, Yuval Bloch, Shahak Yariv, and Yelena Granovsky. "Monitoring Migraine Cycle Dynamics with an Easy-to-Use Electrophysiological Marker—A Pilot Study." Sensors 18, no. 11 (2018): 3918. http://dx.doi.org/10.3390/s18113918.

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Migraine attacks can cause significant discomfort and reduced functioning for days at a time, including the pre-ictal and post-ictal periods. During the inter-ictsal period, however, migraineurs seem to function normally. It is puzzling, therefore, that event-related potentials of migraine patients often differ in the asymptomatic and inter-ictal period. Part of the electrophysiological dynamics demonstrated in the migraine cycle are attention related. In this pilot study we evaluated an easy-to-use new marker, the Brain Engagement Index (BEI), for attention monitoring during the migraine cycl

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Knowlton, Robert C. "Ictal EEG Source Imaging." Journal of Clinical Neurophysiology 41, no. 1 (2024): 27–35. http://dx.doi.org/10.1097/wnp.0000000000001033.

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Summary: Ictal EEG source imaging (ESI) is an advancing and growing application for presurgical epilepsy evaluation. For far too long, localization of seizures with scalp EEG has continued to rely on visual inspection of tracings arranged in a variety of montages allowing, at best, rough estimates of seizure onset regions. This most critical step is arguably the weakest point in epilepsy localization for surgical decision-making in clinical practice today. This review covers the methods and strategies that have been developed and tested for the performance of ictal ESI. It highlights practical

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Boggs, Jane. "A Reexamination of PLEDs in the Setting of Status Epilepticus." Epilepsy Currents 2, no. 4 (2002): 113–14. http://dx.doi.org/10.1111/j.1535-7597.2002.t01-1-00042.x.

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Serial EEG During Human Status Epilepticus: Evidence for PLED as an Ictal Pattern Garzon E, Fernandes RM, Sakamoto AC Neurology 2001;57:1175–1183 Objective To analyze the relationship between periodic lateralized epileptiform discharges (PLED) and status epilepticus (SE), to evaluate the relationship between mortality and periodic patterns, and to determine whether a stereotypic sequence of EEG patterns exists during human SE. Methods The authors performed a prospective clinical and electrographic study comprising 62 episodes of SE, 55 patients, and 254 ictal/postictal EEG recordings. Serial d

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Beniczky, Sándor, and Praveen Sharma. "Ictal EEG source imaging." Zeitschrift für Epileptologie 31, no. 3 (2018): 197–202. http://dx.doi.org/10.1007/s10309-018-0184-z.

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De Vos, Maarten, Lieven De Lathauwer, Bart Vanrumste, Sabine Van Huffel, and W. Van Paesschen. "Canonical Decomposition of Ictal Scalp EEG and Accurate Source Localisation: Principles and Simulation Study." Computational Intelligence and Neuroscience 2007 (2007): 1–10. http://dx.doi.org/10.1155/2007/58253.

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Long-term electroencephalographic (EEG) recordings are important in the presurgical evaluation of refractory partial epilepsy for the delineation of the ictal onset zones. In this paper, we introduce a new concept for an automatic, fast, and objective localisation of the ictal onset zone in ictal EEG recordings. Canonical decomposition of ictal EEG decomposes the EEG in atoms. One or more atoms are related to the seizure activity. A single dipole was then fitted to model the potential distribution of each epileptic atom. In this study, we performed a simulation study in order to estimate the d

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WANG, YU, WEIDONG ZHOU, QI YUAN, et al. "COMPARISON OF ICTAL AND INTERICTAL EEG SIGNALS USING FRACTAL FEATURES." International Journal of Neural Systems 23, no. 06 (2013): 1350028. http://dx.doi.org/10.1142/s0129065713500287.

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The feature analysis of epileptic EEG is very significant in diagnosis of epilepsy. This paper introduces two nonlinear features derived from fractal geometry for epileptic EEG analysis. The features of blanket dimension and fractal intercept are extracted to characterize behavior of EEG activities, and then their discriminatory power for ictal and interictal EEGs are compared by means of statistical methods. It is found that there is significant difference of the blanket dimension and fractal intercept between interictal and ictal EEGs, and the difference of the fractal intercept feature betw

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Wu, Y., S. Weiss, and C. Hahn. "B.03 Registered EEG technologists can accurately identify ictal and interictal epileptiform patterns on routine EEG." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 45, s2 (2018): S12. http://dx.doi.org/10.1017/cjn.2018.91.

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Background: Registered EEG technologists (RETs) are trained in both the technical aspects of EEG and in preliminary EEG interpretation. However, there is little research evaluating the accuracy of EEG interpretation by RETs. Methods: Retrospective study of consecutive routine EEG recordings performed at SickKids Hospital. Preliminary reports by RETs and final reports by neurophysiologists were compared in 5 domains: background activity, focal abnormalities, ictal and inter-ictal epileptiform discharges and summary. Results: 500 EEG recordings were analyzed. Sensitivity and specificity of RET r

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Mestre, Tiago A., Carla Bentes, and José Pimentel. "Ictal eructation: a case report." Epileptic Disorders 10, no. 2 (2008): 170–72. http://dx.doi.org/10.1684/epd.2008.0190.

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ABSTRACT Gastrointestinal symptoms are considered manifestations of ictal phenomena. Eructations are only rarely described. The present case illustrates eructation as an ictal sign in a patient with symptomatic refractory epilepsy and a left temporal lesion submitted to video‐EEG monitoring. The ictal EEG reveals a generalized attenuation of background activity followed by a lateralised right anterior temporal theta rhythmic activity. Eructations take place during the initial generalized ictal EEG changes. The rarity of the ictal eructation is emphasised, and the potential localizing and later

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Koh, Susan, Prasanna Jayakar, Trevor Resnick, Luis Alvarez, Richard E. Liit, and Michael Duchowny. "The localizing value of ictal SPECT in children with tuberous sclerosis complex and refractory partial epilepsy." Epileptic Disorders 1, no. 1 (1999): 41–46. http://dx.doi.org/10.1684/j.1950-6945.1999.tb00292.x.

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ABSTRACT Although multiple cortical tubers are a hallmark of tuberous sclerosis complex (TSC), seizures often originate from a single tuber, making excisional surgery a therapeutic option for intractable patients. To assess the role of ictal single photon emission computed tomography (SPECT) in defining the epileptogenic tuber, we reviewed videoelectroencephalography (V/EEG) data, magnetic resonance imaging (MRI) and SPECT scans of 15 patients (aged 3 months to 15 years, mean 5.1) with medically resistant partial seizures and TSC. SPECT scans were performed using Tc‐99m‐hexamethylpropyleneamin

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10

Limotai, Chusak, Cristina Y. Go, Shiro Baba, et al. "Steal phenomenon in Sturge-Weber syndrome imitating an ictal electroencephalography change in the contralateral hemisphere: report of 2 cases." Journal of Neurosurgery: Pediatrics 16, no. 2 (2015): 212–16. http://dx.doi.org/10.3171/2014.12.peds14238.

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Infants with Sturge-Weber syndrome (SWS) are considered for surgery if they develop seizures and the seizures prove medically refractory. The authors report on 2 infants (15 and 19 months old) with SWS who underwent scalp video electroencephalography (EEG) and subsequent functional hemispherotomy for intractable partial motor seizures due to extensive left hemispheric angiomatosis. They presented with similar interictal and ictal EEG findings. Ictal EEG showed abrupt high-amplitude delta slow waves, without evolution on the contralateral hemisphere before the build-up of ictal EEG changes on t

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Quesney, L. "Neocortical epilepsy: Ictal EEG manifestations." Electroencephalography and Clinical Neurophysiology 103, no. 1 (1997): 215. http://dx.doi.org/10.1016/s0013-4694(97)89038-8.

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12

Rodin, E., and P. Modur. "Ictal intracranial infraslow EEG activity." Clinical Neurophysiology 119, no. 10 (2008): 2188–200. http://dx.doi.org/10.1016/j.clinph.2008.07.222.

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Salek-Haddadi, Afraim, Martin Merschhemke, Louis Lemieux, and David R. Fish. "Simultaneous EEG-Correlated Ictal fMRI." NeuroImage 16, no. 1 (2002): 32–40. http://dx.doi.org/10.1006/nimg.2002.1073.

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Seo, Jong-Hyeon, Ichiro Tsuda, Young Ju Lee, et al. "Pattern Recognition in Epileptic EEG Signals via Dynamic Mode Decomposition." Mathematics 8, no. 4 (2020): 481. http://dx.doi.org/10.3390/math8040481.

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In this paper, we propose a new method based on the dynamic mode decomposition (DMD) to find a distinctive contrast between the ictal and interictal patterns in epileptic electroencephalography (EEG) data. The features extracted from the method of DMD clearly capture the phase transition of a specific frequency among the channels corresponding to the ictal state and the channel corresponding to the interictal state, such as direct current shift (DC-shift or ictal slow shifts) and high-frequency oscillation (HFO). By performing classification tests with Electrocorticography (ECoG) recordings of

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YUAN, QI, WEIDONG ZHOU, SHASHA YUAN, XUELI LI, JIWEN WANG, and GUIJUAN JIA. "EPILEPTIC EEG CLASSIFICATION BASED ON KERNEL SPARSE REPRESENTATION." International Journal of Neural Systems 24, no. 04 (2014): 1450015. http://dx.doi.org/10.1142/s0129065714500154.

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The automatic identification of epileptic EEG signals is significant in both relieving heavy workload of visual inspection of EEG recordings and treatment of epilepsy. This paper presents a novel method based on the theory of sparse representation to identify epileptic EEGs. At first, the raw EEG epochs are preprocessed via Gaussian low pass filtering and differential operation. Then, in the scheme of sparse representation based classification (SRC), a test EEG sample is sparsely represented on the training set by solving l1-minimization problem, and the represented residuals associated with i

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Weil, Sabine, Stephan Arnold, Ilonka Eisensehr, and Soheyl Noachtar. "Heart rate increase in otherwise subclinical seizures is different in temporal versus extratemporal seizure onset: support for temporal lobe autonomic influence." Epileptic Disorders 7, no. 3 (2005): 199–204. http://dx.doi.org/10.1684/j.1950-6945.2005.tb00122.x.

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Ictal heart rate was investigated in otherwise subclinical epileptic seizures to test the hypothesis as to whether ictal tachycardia is physiological and not a physical or psychological stress response. In addition, we aimed to evaluate the localizing significance of pure ictal tachycardia. We included 21 epilepsy patients, who showed an ictal EEG seizure pattern during 22, otherwise subclinical seizures. All patients underwent ictal video‐EEG recordings to evaluate the possibility of resective epilepsy surgery. The changes in heart rate in these patients were investigated in order to determin

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Okumura, Akihisa, Yoko Kondo, Takeshi Tsuji, et al. "Micturition induced seizures: Ictal EEG and subtraction ictal SPECT findings." Epilepsy Research 73, no. 1 (2007): 119–21. http://dx.doi.org/10.1016/j.eplepsyres.2006.09.002.

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18

Zubelić, Aleksa, Jelisaveta Vuletić, Milivoje Ašćerić, et al. "Basic characteristics of EEG epileptiform discharges triggered by lindane in a model of experimental prostatitis." Medicinski podmladak 73, no. 2 (2022): 13–19. http://dx.doi.org/10.5937/mp73-34860.

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Introduction: Chronic prostatitis/Chronic Pelvic Pain Syndrome (CP/CPPS) is the most commonly diagnosed non-infectious prostatitis in urology. Studies have shown that CP/CPPS can induce neuroinflammation, which may result in CNS hyperexcitability and a tendency to develop epileptic seizures. Spike salvos are ictal EEG graph elements typical for the experimental model of lindane-induced seizures. There are a number of mathematical models for quantitative analysis of EEG, including the Fast Fourier Transform (FFT). It transforms the signal from time into the frequency domain, providing informati

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Jemal, Imene, Amar Mitiche, and Neila Mezghani. "A Study of EEG Feature Complexity in Epileptic Seizure Prediction." Applied Sciences 11, no. 4 (2021): 1579. http://dx.doi.org/10.3390/app11041579.

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The purpose of this study is (1) to provide EEG feature complexity analysis in seizure prediction by inter-ictal and pre-ital data classification and, (2) to assess the between-subject variability of the considered features. In the past several decades, there has been a sustained interest in predicting epilepsy seizure using EEG data. Most methods classify features extracted from EEG, which they assume are characteristic of the presence of an epilepsy episode, for instance, by distinguishing a pre-ictal interval of data (which is in a given window just before the onset of a seizure) from inter

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Gardella, Elena, Guido Rubboli, and Carlo Alberto Tassinari. "Video‐EEG analysis of ictal repetitive grasping in “frontal‐hyperkinetic” seizures." Epileptic Disorders 8, no. 4 (2006): 267–73. http://dx.doi.org/10.1684/j.1950-6945.2006.tb00276.x.

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ABSTRACT The aim of this study was to obtain a qualitative and quantitative description of the phenomenon of forced prehension during epileptic seizures (ictal grasping‐ IG) with hyperkinetic semiology. We analysed retrospectively the presurgical, video‐EEG recordings of 35 “frontal hyperkinetic” seizures (FHS) in 14 patients (age range: 9‐48 years) evaluating the features of ictal grasping by means of off‐line, frame‐by‐frame video‐analysis. Ictal grasping was observed in 97.1% of the frontal hyperkinetic seizures in 100% of the patients, with a mean latency of 3.2 seconds with respect to sei

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21

Uludag, IF, O. Tumer, and U. Sener. "Peri-Ictal Heart Rate Changes in Patients with Epilepsy." Nigerian Journal of Clinical Practice 26, no. 8 (2023): 1176–80. http://dx.doi.org/10.4103/njcp.njcp_116_23.

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ABSTRACT Background: Heart rate (HR) changes associated with seizures are promising biomarkers in epilepsy. Aims: The aim of our study is to reveal possible HR changes in the peri-ictal period. Methods: Long-term video-EEG monitorization records of generalized and focal epilepsy patients were reviewed. HRs were calculated in the pre-ictal (2 min before the first seizure activity in EEG), ictal (the time from the first seizure activity on the EEG to the end of the seizure), and in the interictal period (at least 2 h before or 12 h after the seizure). Interictal, pre-ictal, and ictal HRs were co

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Grant, Arthur C, and Jong M Rho. "Ictal EEG Patterns in Band Heterotopia." Epilepsia 43, no. 4 (2002): 403–7. http://dx.doi.org/10.1046/j.1528-1157.2002.42601.x.

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Lee, Sang Kun. "WS8.2 Scalp and Intracranial Ictal EEG." Clinical Neurophysiology 120 (April 2009): S19. http://dx.doi.org/10.1016/s1388-2457(09)60051-1.

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Jovic, N. "5. Ictal EEG in childhood epilepsy." Clinical Neurophysiology 122, no. 7 (2011): e2. http://dx.doi.org/10.1016/j.clinph.2010.12.007.

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Mothersill, I. W., P. Hilfiker, and G. Kramer. "Twenty Years of Ictal EEG-EMG." Epilepsia 41, s3 (2000): S19—S23. http://dx.doi.org/10.1111/j.1528-1157.2000.tb01530.x.

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Alsemari, Abdulaziz, Faisal Alotaibi, and Salah Baz. "Ictal kissing with subdural EEG recording." Epilepsy & Behavior Case Reports 1 (2013): 79–84. http://dx.doi.org/10.1016/j.ebcr.2013.05.001.

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Ouchida, Sumika, Kaitlyn Parratt, Armin Nikpour, and Greg Fairbrother. "Syncope vs. Seizure: Ictal Bradycardia and Ictal Asystole." Case Reports in Neurological Medicine 2024 (May 6, 2024): 1–6. http://dx.doi.org/10.1155/2024/1299282.

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Background. Ictal arrhythmia is a rare condition that causes arrhythmic manifestations induced by epileptic seizures, including asystole or bradycardia. Ictal asystole (IA) is a very rare condition found in patients undergoing video-encephalography (EEG) monitoring. It is often related to temporal lobe epilepsy and can cause syncope, which can lead to injury or even death. Case Presentation. Two patients with epilepsy showed symptoms of syncope. Both patients underwent 4-day ambulatory EEG tests and were diagnosed with IA. Following the tests, the patients were implanted with a permanent pacem

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Koren, Johannes, Johannes Herta, and Christoph Baumgartner. "Critical Care EEG." Fortschritte der Neurologie · Psychiatrie 88, no. 01 (2020): 52–63. http://dx.doi.org/10.1055/a-1008-7783.

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Neuromonitoring mittels kontinuierlichem EEG (cEEG) kommt bei intensivpflichtigen Patienten immer häufiger zur Anwendung. Mithilfe standardisierter EEG-Kriterien können nichtkonvulsive Anfälle bzw. Status epileptici sowie rhythmische und periodische EEG-Muster unklarer Wertigkeit („ictal-interictal continuum“) verlässlich detektiert und unterschieden werden. Ebenso können mittels cEEG zerebrale Ischämien frühzeitig detektiert, sowie Sedierungs- und Therapiemanagement überwacht und gesteuert werden.

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Yasugi, Daisuke, Takeshi Sasaki, and Go Taniguchi. "Periodic Slow Waves Presenting as Ictal Electroencephalography Findings in Complex Partial Status Epilepticus." Case Reports in Neurology 10, no. 2 (2018): 199–206. http://dx.doi.org/10.1159/000490939.

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The diagnosis of nonconvulsive status epilepticus (NCSE) largely relies on electroencephalography (EEG) findings, but the existing diagnostic criteria for EEG results are sometimes inconsistent. Much debate has centered on periodic epileptic discharges (PEDs) and their relationship with seizures. The recently published Salzburg Consensus Criteria for diagnosis of NCSE, which consider PEDs to be ictal findings under several conditions, have been proven to have high diagnostic accuracy. However, the criteria do not include periodic slow waves (PSWs) and do not consider these as overall ictal ele

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Koren, Johannes, Johannes Herta, and Christoph Baumgartner. "Critical Care EEG." Klinische Neurophysiologie 50, no. 02 (2019): 60–72. http://dx.doi.org/10.1055/a-0835-4010.

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Neuromonitoring mittels kontinuierlichem EEG (cEEG) kommt bei intensivpflichtigen Patienten immer häufiger zur Anwendung. Mithilfe standardisierter EEG-Kriterien können nicht-konvulsive Anfälle bzw. Status epileptici sowie rhythmische und periodische EEG-Muster unklarer Wertigkeit („ictal-interictal continuum“) verlässlich detektiert und unterschieden werden. Ebenso können mittels cEEG zerebrale Ischämien frühzeitig detektiert, sowie Sedierungs- und Therapiemanagement überwacht und gesteuert werden.

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Biju, K. S., and M. G. Jibukumar. "CLASSIFICATION OF ICTAL EEG USING MODELING BASED SPECTRAL AND TEMPORAL FEATURES ON INSTANTANEOUS AMPLITUDE-FREQUENCY COMPONENTS OF IMFs." Biomedical Engineering: Applications, Basis and Communications 30, no. 06 (2018): 1850042. http://dx.doi.org/10.4015/s1016237218500424.

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In the present study, a method for classifying the different ictal stages in electroencephalogram (EEG) signals is proposed. The main symptoms of epilepsy are indicated by ictal activities, which trigger widespread neurological disorders other than stroke and thus affect the world population. In this work, a novel ictal classification method that combines the spectral and temporal features of twin components in Hilbert–Huang transform is proposed. Spectral features of instantaneous amplitude (IA) function are obtained based on the power spectral density of autoregressive (AR) modeling. Here fo

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Shi, Yanfang, and Huancong Zuo. "Surgical treatment of focal inhibitory motor seizures." Journal of Neurosurgery: Pediatrics 9, no. 3 (2012): 301–4. http://dx.doi.org/10.3171/2011.12.peds11205.

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The authors describe a rare case of a pediatric patient with focal inhibitory motor seizures (ictal paralysis) with the seizure focus in the primary motor cortex. Seizures were characterized by ictal paralysis of the contralateral limbs without loss of consciousness. The seizure focus and progression were examined using long-term video electroencephalography (EEG) monitoring and MR imaging. Invasive recordings of the ictal EEG revealed spike rhythms arising from the primary motor cortex, suggesting that seizures associated with paralysis can arise from hyperactivity in either positive or negat

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Parvez, Mohammad Zavid, and Manoranjan Paul. "NOVEL APPROACHES OF EEG SIGNAL CLASSIFICATION USING IMF BANDWIDTH AND DCT FREQUENCY." Biomedical Engineering: Applications, Basis and Communications 27, no. 03 (2015): 1550027. http://dx.doi.org/10.4015/s1016237215500271.

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Electroencephalogram (EEG) is a record of ongoing electrical signal to represent the human brain activity. It has great potential for the diagnosis to treatment of mental disorder and brain diseases such as epileptic seizure. Features extraction and classification is a crucial task to detect the stage of ictal (i.e. seizure period) and interictal (i.e. period between seizures) EEG signals for the treatment and precaution of the patient. However, existing seizure and non-seizure feature extraction techniques are not good enough for the classification of ictal and interictal EEG signals consider

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Zakaria, Tarek, Katherine Noe, Elson So, et al. "Scalp and Intracranial EEG in Medically Intractable Extratemporal Epilepsy with Normal MRI." ISRN Neurology 2012 (June 25, 2012): 1–9. http://dx.doi.org/10.5402/2012/942849.

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Purpose. To investigate EEG and SPECT in the surgical outcome of patients with normal MRI (nonlesional) and extratemporal lobe epilepsy. Methods. We retrospectively identified 41 consecutive patients with nonlesional extratemporal epilepsy who underwent epilepsy surgery between 1997 and 2007. The history, noninvasive diagnostic studies (scalp EEG, MRI, and SPECT) and intracranial EEG (iEEG) monitoring was reviewed. Scalp and iEEG ictal onset patterns were defined. The association of preoperative studies and postoperative seizure freedom was analyzed using Kaplan-Meier analysis, log-rank test,

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Tiwari, Priyal, Pushpendra Nath Renjen, and Dinesh Mohan Chaudhari. "Ictal epileptic headache in young female." International Journal of Advances in Medicine 10, no. 12 (2023): 849–51. http://dx.doi.org/10.18203/2349-3933.ijam20233570.

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The establishment of a temporal association between a hybrid of headache and epilepsy is essential for correct diagnosis and management of headache. Epilepsy-associated headaches (such as migralepsy, hemicrania epileptica, post ictal headache and ictal epileptic headaches) may be similar to the patients' usual headache or may be a new type of headache. The location of headaches is unrelated to the EEG localization of epileptic aura or ictal discharges. The only established association of location of headaches and epilepsy is seen in cases of migraine with a visual aura which seems to precede f

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Aleksandrova, Iliyana, Daniela Deneva, and Veneta Bojinova. "EEG finding in a patient with vasovagal syncope." Bulgarian Neurology 25, no. 2 (2024): 64–66. https://doi.org/10.5281/zenodo.15360260.

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Syncope is characterized by a transient loss of consciousness due to cerebral hypoperfusion. The main differential diagnosis is made with epileptic seizures.The paper presents the case of a boy with three episodes of loss of consciousness, after an abrupt standing with complaints of lightheadedness, followed by falling, with short duration and with subsequent complaints of headache. During the EEG an episode of loss of consciousness was recorded, in sitting position, in which the boy reported lightheadedness, followed by tonic stretching, tightening of the arms, with single clonic contractions

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Sazgar, Mona, Peter L. Carlen, and Richard Wennberg. "Panic attack semiology in right temporal lobe epilepsy." Epileptic Disorders 5, no. 2 (2003): 93–100. http://dx.doi.org/10.1684/j.1950-6945.2003.tb00569.x.

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Background: Panic attack semiology as a manifestation of epileptic seizures may lead to difficulties and delay in diagnosis. We present a case series to demonstrate the association of ictal panic and anxiety symptoms with partial seizures lateralized to the right temporal lobe. Methods: From 112 consecutive patients with intractable temporal lobe epilepsy (59 right, 53 left) referred for video‐EEG monitoring, five patients were identified whose seizures had been diagnosed as panic attacks in the past. Their ictal symptomatology included feelings of panic and impending doom, hyperventilation, p

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Silva, Délrio F., Márcia Marques Lima, Renato Anghinah, Edmar Zanoteli, and José Geraldo Camargo Lima. "Atypical EEG pattern in children with absence seizures." Arquivos de Neuro-Psiquiatria 53, no. 2 (1995): 258–61. http://dx.doi.org/10.1590/s0004-282x1995000200012.

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We studied four children with diagnosis of absence seizures (generalized primary epilepsy), and with a generalized delta activity on the EEG during clinical attacks provoked by hyperventilation. The lack of ictal generalized spike-and-wave discharges with a frequency of 3 Hz in our patients, makes this an atypical pattern. All children had complete control of their seizures and disappearance of the EEG changes with valproate. We concluded that generalized delta activity observed on EEG during the hyperventilation in children should not always be considered as a normal finding for age, since it

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Ogunyemi, Abayomi. "Triphasic Waves During Post-Ictal Stupor." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 23, no. 3 (1996): 208–12. http://dx.doi.org/10.1017/s0317167100038531.

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AbstractBackground: The term, “triphasic wave” originally described an EEG pattern believed to be a marker for a specific stage of hepatic coma. For 4 decades, the diagnostic and prognostic specificity of the pattern remains controversial. Its pathophysiology also continues to be elusive. Methods: EEG recordings were obtained in three patients known or suspected to have primary generalized epilepsy. In 2 patients, the EEGs were part of long-term monitoring using simultaneous video-EEG telemetry. For the third patient, the EEG was secured only during the post-ictal unconsciousness. These 3 pati

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Kaur, Arshpreet, Karan Verma, Amol P. Bhondekar, and Kumar Shashvat. "Implementation of Bagged SVM Ensemble Model for Classification of Epileptic States Using EEG." Current Pharmaceutical Biotechnology 20, no. 9 (2019): 755–65. http://dx.doi.org/10.2174/1389201020666190618112715.

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Background: To decipher EEG (Electroencephalography), intending to locate inter-ictal and ictal discharges for supporting the diagnoses of epilepsy and locating the seizure focus, is a critical task. The aim of this work was to find how the ensemble model distinguishes between two different sets of problems which are group 1: inter-ictal and ictal, group 2: controlled and inter-ictal using approximate entropy as a parameter. Methods: This work addresses the classification problem for two groups; Group 1: “inter-ictal vs. ictal” for which case 1(C-E), and case 2(D-E) are included and Group 2; “

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Parisi, Pasquale, Raffaele Ferri, Jacopo Pagani, Manuela Cecili, Enza Montemitro, and Maria Pia Villa. "Ictal video‐polysomnography and EEG spectral analysis in a child with severe Panayiotopoulos syndrome." Epileptic Disorders 7, no. 4 (2005): 333–39. http://dx.doi.org/10.1684/j.1950-6945.2005.tb00136.x.

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Objective To describe the ictal polysomnographic features of a patient with Panayiotopoulos syndrome, a peculiar epileptic syndrome characterized by infrequent, often single, prolonged, nocturnal, focal seizures comprising an unusual constellation of autonomic symptoms (malaise, nausea, pallor, tachycardia, vomiting) and unilateral deviation of the eyes at the onset of seizures. These clinical, ictal manifestations are rarely followed by post‐ictal headache. In the literature, there is little information on the ictal EEG characteristics of Panayiotopoulos syndrome and, in particular, on certai

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Janszky, J., A. Holló, P. Barsi, et al. "Misleading lateralization by ictal SPECT in temporal lobe epilepsy – a case report." Epileptic Disorders 4, no. 2 (2002): 159–62. http://dx.doi.org/10.1684/j.1950-6945.2002.tb00486.x.

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ABSTRACT A 28‐year‐old woman with temporal lobe epilepsy underwent presurgical evaluation. Scalp‐EEG showed non‐localizing seizure patterns. MRI revealed a right hippocampal sclerosis. Ictal HMPAO‐SPECT showed a marked left temporal hyperperfusion. Video‐EEG monitoring with foramen ovale electrodes (FOE) showed an initial seizure pattern which appeared in the right FOE and which shifted to the left 8 s after clinical onset. Three years after a right temporal lobectomy, the patient is seizure‐free. In conclusion, although the ictal SPECT suggested a left temporal seizure focus, the intracranial

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O'Neill, Nora S., Zoltan J. Koles, and Manouchehr Javidan. "Identification of the Temporal Components of Seizure Onset in the Scalp EEG." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 28, no. 3 (2001): 245–53. http://dx.doi.org/10.1017/s0317167100001402.

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Background:The identification of the earliest indication of rhythmical oscillations and paroxysmal events associated with an epileptic seizure is paramount in identifying the location of the seizure onset in the scalp EEG. In this work, data-dependent filters are designed that can help reveal obscure activity at the onset of seizures in problematic EEGs.Methods:Data-dependent filters were designed using temporal patterns common to selected segments from pre-ictal and ictal portions of the scalp EEG. Temporal patterns that accounted for more variance in the ictal segment than in the pre-ictal s

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Yuan, Qi, Weidong Zhou, Fangzhou Xu, Yan Leng, and Dongmei Wei. "Epileptic EEG Identification via LBP Operators on Wavelet Coefficients." International Journal of Neural Systems 28, no. 08 (2018): 1850010. http://dx.doi.org/10.1142/s0129065718500107.

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The automatic identification of epileptic electroencephalogram (EEG) signals can give assistance to doctors in diagnosis of epilepsy, and provide the higher security and quality of life for people with epilepsy. Feature extraction of EEG signals determines the performance of the whole recognition system. In this paper, a novel method using the local binary pattern (LBP) based on the wavelet transform (WT) is proposed to characterize the behavior of EEG activities. First, the WT is employed for time–frequency decomposition of EEG signals. After that, the “uniform” LBP operator is carried out on

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Chung, Jeffrey, Kimford Meador, Stephan Eisenschenk, et al. "Utility of invasive ictal EEG recordings in pre-surgical evaluation of patients with medically refractory temporal lobe epilepsy and normal MRI." International Journal of Epilepsy 02, no. 02 (2015): 066–71. http://dx.doi.org/10.1016/j.ijep.2015.04.001.

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AbstractPurpose Some previous studies have suggested that invasive ictal recording may be omitted in patients with medically refractory temporal lobe epilepsy (TLE) that have localizing scalp ictal recordings despite having normal magnetic resonance imaging (MRI). We investigated if and how often invasive ictal recording provided additional information to their pre-surgical evaluations.Methods In a retrospective review of 302 patients with intractable TLE who underwent pre-surgical evaluation between 1991 and 2006, we identified 45 patients who had normal MRI. Localization by scalp ictal recor

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Loreto, Vincenzo, Cristofaro Nocerino, Pasquale Striano, Federica D'Aulos, Patrizia Boccella, and Salvatore Striano. "Eating epilepsy. Heterogeneity of ictal semiology: the role of video‐EEG monitoring." Epileptic Disorders 2, no. 2 (2000): 93–98. http://dx.doi.org/10.1684/j.1950-6945.2000.tb00362.x.

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ABSTRACT In this paper, three more cases of eating‐induced seizures are reported. We have obtained ictal video‐electroencephalogram (EEG) recordings for two patients, which confirm the heterogeneity of ictal semiology of these seizures. However, in all the cases the inclusion of this kind of reflex epilepsy (RE) among the localization‐related epilepsies (LRE) is confirmed. The usefulness of video EEG monitoring in studying these seizures and reflex epilepsy in general (RE) is stressed.

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Almurshedi, Ahmed Fadhil. "Envelope analysis and short time Fourier transform of EEG for epilepsy diagnosis enhancement." Romanian Journal of Neurology 24, no. 1 (2025): 35–41. https://doi.org/10.37897/rjn.2025.1.12.

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Background. Epilepsy is a chronic neurological disorder that affects millions worldwide, characterized by abnormal electrical activity in the brain. EEG (electroencephalogram) rhythms are critical for diagnosing epileptic seizures. This study uses EEG datasets from epilepsy patients recorded at the Neurology and Sleep Centre, Hauz Khas, New Delhi. Methods. A hybrid signal processing method combining envelope analysis and short-time Fourier transform (STFT) was proposed to enhance the diagnosis of epileptic seizures. The analysis compares EEG rhythms, envelope analysis, and STFT for three disti

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García-López, Beatriz, María Sueiras-Gil, Ana Isabel Gómez-Menéndez, et al. "Morphological Description of Frontal EEG Interictal and Ictal Discharges in an Adult Cohort of 175 Patients." Journal of Clinical Medicine 10, no. 6 (2021): 1219. http://dx.doi.org/10.3390/jcm10061219.

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Clinical and electroencephalogram (EEG) features in frontal lobe epilepsy (FLE) vary considerably among patients, making the diagnosis a challenge. The objective of this study was to describe interictal and ictal EEG activity, identifying variables that could help to differentiate and diagnose frontal lobe epilepsy cases. A prospective cross-sectional study from patients with frontal interictal epileptiform discharges (IED) referred to the Vall d’Hebron University Hospital (Barcelona, Spain) after a clinical event compatible with epileptic seizures was designed. The interictal and ictal activi

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Wahlund, Björn, Paolo Piazza, Dietrich von Rosen, Benny Liberg, and Hans Liljenström. "Seizure (Ictal)—EEG Characteristics in Subgroups of Depressive Disorder in Patients Receiving Electroconvulsive Therapy (ECT)—A Preliminary Study and Multivariate Approach." Computational Intelligence and Neuroscience 2009 (2009): 1–8. http://dx.doi.org/10.1155/2009/965209.

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Objectives. Examine frequency distributions of ictal EEG after ECT stimulation in diagnostic subgroups of depression.Methods. EEG registration was consecutively monitored in 33 patients after ECT stimulation. Patients were diagnosed according to DSM IV and subdivided into: (1) major depressive disorder with psychotic features(n=7), (2) unipolar depression(n=20), and (3) bipolar depression(n=6).Results. Results indicate that the diagnostically subgroups differ in their ictal EEG frequency spectrumml: (1) psychotic depression has a high occurrence of delta and theta waves, (2) unipolar depressio

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Kanshina, D. S., I. V. Okuneva, M. A. Surma, O. Yu Bronov, and S. S. Nikitin. "Stimulus-induced periodic discharges in response to low-frequency photostimulation in a female patient in recovery period after middle cerebral artery stroke." Epilepsy and paroxysmal conditions 15, no. 3 (2023): 275–81. http://dx.doi.org/10.17749/2077-8333/epi.par.con.2023.155.

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Stimulus-induced rhythmic, periodic, or ictal discharges (SIRPIDs) represent a relatively common phenomenon recorded during a long-term electroencephalogram (EEG) monitoring allowing to capture the altered state and response to auditory, tactile or nociceptive stimulation in critically ill patients. It is a nosologically non-specific phenomenon, and its relation to ictal event remains debated. We present a clinical case in which SIRPIDs were recorded in the affected dominant hemisphere in response to low-frequency photostimulation in a 60-years-old woman recovering after middle cerebral artery

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