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https://www.readbyqxmd.com/read/29155063/technical-note-robotic-guided-bi-hippocampal-and-bi-parahippocampal-depth-placement-for-responsive-neurostimulation-in-bitemporal-lobe-epilepsy
#1
Pratik Rohatgi, Ryan J Jafrani, Nicholas J Brandmeir, Frank G Gilliam, Tiffany L Fisher, Michael D Sather
BACKGROUND: Patients with bitemporal lobe epilepsy are generally not considered for surgical resection. Fortunately, responsive neurostimulation proves another avenue for the management of this challenging disease process. In conjunction with our epileptologist, we consider responsive neurostimulation for patients who have clinical features of temporal lobe epilepsy without clear localization on imaging and stereo-EEG. METHODS: Here we describe our technique for implanting a responsive neurostimulator (NeuroPace, NeuroPace Inc...
November 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29147661/an-eeg-tool-for-monitoring-patient-engagement-during-stroke-rehabilitation-a-feasibility-study
#2
Gadi Bartur, Katherin Joubran, Sara Peleg-Shani, Jean-Jacques Vatine, Goded Shahaf
Objective: Patient engagement is of major significance in neural rehabilitation. We developed a real-time EEG marker for attention, the Brain Engagement Index (BEI). In this work we investigate the relation between the BEI and temporary functional change during a rehabilitation session. Methods: First part: 13 unimpaired controls underwent BEI monitoring during motor exercise of varying levels of difficulty. Second part: 18 subacute stroke patients underwent standard motor rehabilitation with and without use of real-time BEI feedback regarding their level of engagement...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29146376/wronger-than-wrong-graded-mapping-of-the-errors-of-an-avatar-in-the-performance-monitoring-system-of-the-onlooker
#3
G Spinelli, G Tieri, E F Pavone, S M Aglioti
EEG studies show that observing errors in one's own or others' actions triggers specific electro-cortical signatures in the onlooker's brain, but whether the brain error-monitoring system operates according to graded or discrete rules is still largely unknown. To explore this issue, we combined immersive virtual reality with EEG recording in participants who observed an avatar reaching-to-grasp a glass from a first-person perspective. The avatar could perform correct or erroneous actions. Erroneous grasps were defined as small or large depending on the magnitude of the trajectory deviation from the to-be-grasped glass...
November 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/29139014/the-ictal-interictal-continuum-to-treat-or-not-to-treat-and-how
#4
Clio Rubinos, Alexandra S Reynolds, Jan Claassen
Continuous electroencephalography (cEEG) monitoring is becoming increasingly used in neurologic and non-neurologic intensive care units (ICUs). Non-convulsive seizures (NCSz) and periodic discharges (PDs) are commonly seen in critically ill patients. Some of these PD patterns, also known as the ictal-interictal continuum (IIC), are associated with an increased risk of seizures and poor outcome. However, we do not fully understand the significance of these periodic patterns and the decision of how aggressively to treat remains controversial...
November 14, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/29132379/effects-of-somatosensory-electrical-stimulation-on-motor-function-and-cortical-oscillations
#5
Adelyn P Tu-Chan, Nikhilesh Natraj, Jason Godlove, Gary Abrams, Karunesh Ganguly
BACKGROUND: Few patients recover full hand dexterity after an acquired brain injury such as stroke. Repetitive somatosensory electrical stimulation (SES) is a promising method to promote recovery of hand function. However, studies using SES have largely focused on gross motor function; it remains unclear if it can modulate distal hand functions such as finger individuation. OBJECTIVE: The specific goal of this study was to monitor the effects of SES on individuation as well as on cortical oscillations measured using EEG, with the additional goal of identifying neurophysiological biomarkers...
November 13, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29132064/patients-and-caregivers-contributions-for-differentiating-epileptic-from-psychogenic-nonepileptic-seizures-value-and-limitations-of-self-reporting-questionnaires-a-pilot-study
#6
Giuseppe Erba, Elisa Bianchi, Giorgia Giussani, John Langfitt, Adam Juersivich, Ettore Beghi
PURPOSE: Questionnaires investigating semiology and comorbidities of psychogenic non-epileptic seizures (PNES) have been used mainly to help physicians expedite referrals to epilepsy centres for confirmation of diagnosis rather than as alternative diagnostic tool when video-EEG monitoring (VEM), the current gold standard, is not available or is inconclusive. METHODS: We developed one structured questionnaire for patients, exploring subjective experiences and vulnerabilities and one for eyewitnesses, focused on features observable during typical events to study prospectively 50 consecutive adult patients with PNES or epileptic seizures (ES) admitted for VEM...
November 8, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29129655/relevance-and-uncertainty-jointly-influence-reward-anticipation-at-the-level-of-the-spn-erp-component
#7
Wioleta Walentowska, Katharina Paul, Mario Carlo Severo, Agnes Moors, Gilles Pourtois
The stimulus-preceding negativity (SPN) component reflects the anticipatory phase of reward processing. Its amplitude is usually larger for informative compared to uninformative upcoming stimuli, as well as for uncertain relative to predictable ones. In this study, we sought to assess whether these two effects, when combined together, produced a synergistic effect or rather independent ones on the SPN during performance monitoring. Participants performed a speeded Go/NoGo task while 64-channel EEG was recorded concurrently...
November 9, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29126462/prediction-of-drowsiness-events-in-night-shift-workers-during-morning-driving
#8
Yulan Liang, William J Horrey, Mark E Howard, Michael L Lee, Clare Anderson, Michael S Shreeve, Conor S O'Brien, Charles A Czeisler
The morning commute home is an especially vulnerable time for workers engaged in night shift work due to the heightened risk of experiencing drowsy driving. One strategy to manage this risk is to monitor the driver's state in real time using an in vehicle monitoring system and to alert drivers when they are becoming sleepy. The primary objective of this study is to build and evaluate predictive models for drowsiness events occurring in morning drives using a variety of physiological and performance data gathered under a real driving scenario...
November 7, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29124529/eeg-indices-correlate-with-sustained-attention-performance-in-patients-affected-by-diffuse-axonal-injury
#9
Stefania Coelli, Riccardo Barbieri, Gianluigi Reni, Claudio Zucca, Anna Maria Bianchi
The aim of this study is to assess the ability of EEG-based indices in providing relevant information about cognitive engagement level during the execution of a clinical sustained attention (SA) test in healthy volunteers and DAI (diffused axonal injury)-affected patients. We computed three continuous power-based engagement indices (P β /P α , 1/P α , and P β / (P α + P θ )) from EEG recordings in a control group (n = 7) and seven DAI-affected patients executing a 10-min Conners' "not-X" continuous performance test (CPT)...
November 9, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29122492/d-leucine-evaluation-in-an-epilepsy-model
#10
Kylie Holden, Adam L Hartman
BACKGROUND: Current medicines do not provide sufficient seizure control for nearly one-third of patients with epilepsy. New options are needed to address this treatment gap. We recently found that the atypical amino acid d-leucine protected against acutely-induced seizures in mice, but its effect in chronic seizures has not been explored. We hypothesized that d-leucine would protect against spontaneous recurrent seizures. We also investigated whether mice lacking a previously-described d-leucine receptor (Tas1R2/R3) would be protected against acutely-induced seizures...
November 7, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29111502/a-simple-clinical-score-for-prediction-of-nonepileptic-seizures
#11
Sindhu R Rao, Jeremy D Slater, Giridhar P Kalamangalam
Psychogenic nonepileptic seizures (PNES), often mistaken for epilepsy in community practice, require inpatient video-EEG (VEEG) monitoring for diagnostic confirmation. We developed a simple score designed for use in an outpatient setting to predict the subsequent VEEG diagnosis of PNES. We retrospectively compared fifty-five consecutive patients with VEEG-proven PNES (N1=55) with a group of randomly selected patients with VEEG-proven epilepsy (N2=55). Patients were divided into two groups: I) a 'truly retrospective' group of 27 patients with PNES and 27 patients with epilepsy whose data served to develop the score, and II) a 'pseudoprospective' group of 28 patients each with PNES and epilepsy to whom the score was applied...
October 27, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29101859/3-tesla-mri-negative-focal-epilepsies-presurgical-evaluation-postoperative-outcome-and-predictive-factors
#12
Evangelos Kogias, Jan-Helge Klingler, Horst Urbach, Christian Scheiwe, Barbara Schmeiser, Soroush Doostkam, Josef Zentner, Dirk-Matthias Altenmüller
OBJECTIVE: To investigate presurgical diagnostic modalities, clinical and seizure outcome as well as predictive factors after resective epilepsy surgery in 3 Tesla MRI-negative focal epilepsies. PATIENTS AND METHODS: This retrospective study comprises 26 patients (11 males/15 females, mean age 34±12years, range 13-50 years) with 3 Tesla MRI-negative focal epilepsies who underwent resective epilepsy surgery. Non-invasive and invasive presurgical diagnostic modalities, type and localization of resection, clinical and epileptological outcome with a minimum follow-up of 1year (range 1-11 years, mean 2...
October 31, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29099402/simultaneous-monitoring-of-electroencephalographic-characteristics-in-animals-subjected-to-behavioral-tests-a-preclinical-investigation
#13
Ramakrishna Nirogi, Saivishal Daripelli, Vijay Benade, Chaitanya Tirumalasetty, Gopinadh Bhyrapuneni, Pradeep Jayarajan
Drug-induced changes in electroencephalographic (EEG) characteristics in animals may be used to predict central activity of drugs in humans. Previous studies have established that drugs affect EEG characteristics in humans and rodents in a similar manner. However, there has been little work to establish correlations between drug effects on behavioral and EEG characteristics in rats. In the current study, we have simultaneously monitored EEG characteristics during a novel object recognition task (NORT) or open field (OF) test in rats...
December 2017: Behavioural Pharmacology
https://www.readbyqxmd.com/read/29097134/clinical-course-and-long-term-outcome-in-children-with-alteration-of-consciousness-underwent-continuous-eeg-monitoring-a-prospective-observational-study-in-thailand
#14
Thitiporn Fangsaad, Siriluk Assawabumrungkul, Anannit Visudtibhan
The study aims to explore the clinical course and long-term outcome in children with altered consciousness who underwent cEEG monitoring. A prospective observational study was conducted in neonatal and pediatric intensive care units from 1 September 2014 through 31 March 2017. Standard 10-20 cEEG monitoring was applied. Twenty children were included in this study. Their ages ranged from 1 day to 142.7 months (median age 40.6 months). Continuous EEG was commenced from 5 h to 5 days after the onset of alteration of consciousness (median 40...
October 30, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29096220/ear-eeg-detects-ictal-and-interictal-abnormalities-in-focal-and-generalized-epilepsy-a-comparison-with-scalp-eeg-monitoring
#15
I C Zibrandtsen, P Kidmose, C B Christensen, T W Kjaer
OBJECTIVE: Ear-EEG is recording of electroencephalography from a small device in the ear. This is the first study to compare ictal and interictal abnormalities recorded with ear-EEG and simultaneous scalp-EEG in an epilepsy monitoring unit. METHODS: We recorded and compared simultaneous ear-EEG and scalp-EEG from 15 patients with suspected temporal lobe epilepsy. EEGs were compared visually by independent neurophysiologists. Correlation and time-frequency analysis was used to quantify the similarity between ear and scalp electrodes...
October 12, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29076473/-the-management-of-patients-with-new-epileptic-seizures-in-the-early-period-after-resection-of-hemispheric-tumors-two-case-reports-and-a-literature-review
#16
E Yu Sokolova, I A Savin, A B Kadasheva, A V Gavryushin, D I Pitskhelauri, A V Kozlov, K N Lapteva, V V Podlepich
Epileptic seizures developing for the first time after a neurosurgical intervention (de novo seizures) are a challenge for choosing an optimal treatment. The pathogenesis of these seizures is often associated with factors that become inactive in the early postoperative period. These seizures can not serve the basis for diagnosing symptomatic epilepsy and should be regarded as a brain response to surgery, and patients do not need anticonvulsant therapy that reduces the quality of life. But in some situations, new early postoperative seizures serve the onset of symptomatic epilepsy and require prolonged anticonvulsant therapy...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/29071301/action-monitoring-cortical-activity-coupled-to-submovements
#17
Michael Pereira, Aleksander Sobolewski, José Del R Millán
Numerous studies have examined neural correlates of the human brain's action-monitoring system during experimentally segmented tasks. However, it remains unknown how such a system operates during continuous motor output when no experimental time marker is available (such as button presses or stimulus onset). We set out to investigate the electrophysiological correlates of action monitoring when hand position has to be repeatedly monitored and corrected. For this, we recorded high-density electroencephalography (EEG) during a visuomotor tracking task during which participants had to follow a target with the mouse cursor along a visible trajectory...
September 2017: ENeuro
https://www.readbyqxmd.com/read/29070752/a-surgical-case-of-mesial-temporal-lobe-epilepsy-associated-with-hippocampal-sclerosis-and-traumatic-neocortical-lesion
#18
Yu Kitazawa, Kazutaka Jin, Masaki Iwasaki, Hiroyoshi Suzuki, Fumiaki Tanaka, Nobukazu Nakasato
A 26-year-old right-handed woman, with a history of left temporal lobe contusion caused by a fall at the age of 9 months, started to have complex partial seizures with oral automatism at the age of 7 years. The seizures occurred once or twice a month despite combination therapy with several antiepileptic agents. Her history and imaging studies suggested the diagnosis of epilepsy arising from traumatic neocortical temporal lesion. Comprehensive assessment including long-term video EEG monitoring, MRI, FDG-PET, MEG, and neuropsychological evaluation was performed at the age of 26 years...
October 26, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/29067832/features-of-simultaneous-scalp-and-intracranial-eeg-that-predict-localization-of-ictal-onset-zone
#19
Sergiu Abramovici, Arun Antony, Maria Elizabeth Baldwin, Alexandra Urban, Gena Ghearing, Julie Pan, Tao Sun, Robert Todd Krafty, R Mark Richardson, Anto Bagic
OBJECTIVE: To assess the utility of simultaneous scalp EEG in patients with focal epilepsy undergoing intracranial EEG evaluation after a detailed presurgical testing, including an inpatient scalp video EEG evaluation. METHODS: Patients who underwent simultaneous scalp and intracranial EEG (SSIEEG) monitoring were classified into group 1 or 2 depending on whether the seizure onset zone was delineated or not. Seizures were analyzed using the following 3 EEG features at the onset of seizures latency, location, and pattern...
October 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29067633/implementation-of-continuous-video-electroencephalography-at-a-community-hospital-enhances-care-and-reduces-costs
#20
Brad J Kolls, Brian E Mace, Keith E Dombrowski
BACKGROUND: Despite data indicating the importance of continuous video-electroencephalography (cvEEG) monitoring, adoption has been slow outside major academic centers. Barriers to adoption include the need for technologists, equipment, and cvEEG readers. Advancements in lower-cost lead placement templates and commercial systems with remote review may reduce barriers to allow community centers to implement cvEEG. Here, we report our experience, lessons learned, and financial impact of implementing a community hospital cvEEG-monitoring program...
October 24, 2017: Neurocritical Care
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