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Eeg monitoring

Bhim Mani Adhikari, Martin Norgaard, Kristen M Quinn, Jenine Ampudia, Justin Squirek, Mukesh Dhamala
Musical improvisation offers an excellent experimental paradigm for the study of real-time human creativity. It involves moment-to-moment decision-making, monitoring of one's performance, and utilizing external feedback to spontaneously create new melodies or variations on a melody. Recent neuroimaging studies have begun to study the brain activity during musical improvisation, aiming to unlock the mystery of human creativity. What brain resources come together and how these are utilized during musical improvisation is not well understood...
October 18, 2016: Brain Connectivity
G Bryan Young
No abstract text is available yet for this article.
October 14, 2016: Resuscitation
Zulfi Haneef, Sharon Chiang, Holly Rutherford, Arun Antony
INTRODUCTION: Fellowship training in Clinical Neurophysiology (CNP) is often sought following Neurology residency. However, data documenting the reasons for choosing CNP fellowship, and experiences therein, are sparse. METHODS: Current Neurophysiology fellows across the United States participated in a 17-item, internet-based survey. Data regarding demographics, reasons for choosing fellowship, adequacy of training, and future plans were collected. RESULTS: Among respondents (n=49), 84% graduated from a US medical school...
October 5, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Robert D Bolen, Jonathan J Halford, Jonathan C Edwards
INTRODUCTION: Digital EEG has brought about greater flexibility in data interpretation but has also resulted in new and unique artifacts. As digital EEG has evolved, an increase in ICU monitoring has occurred, bringing more sources of artifact to light. Aliasing due to a combination of compressed timebase and display monitor resolution can result in appearance of spurious waveforms that can potentially skew interpretation. METHODS: A portion of a digital EEG from an ICU patient acquired at a sample rate of 1024 Hz was reviewed at a timebase of 15 mm/sec on a monitor with a resolution of 1920x1080...
October 5, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Santoshi Billakota, Saurabh R Sinha
INTRODUCTION: Continuous EEG (cEEG) monitoring is used in the intensive care unit (ICU) setting to detect seizures, especially nonconvulsive seizures and status epilepticus. The utility and impact of such monitoring in non-ICU patients are largely unknown. METHODS: Hospitalized patients who were not in an ICU and underwent cEEG monitoring in the first half of 2011 and 2014 were identified. Reason for admission, admitting service (neurologic and nonneurologic), indication for cEEG, comorbid conditions, duration of recording, EEG findings, whether an event/seizure was recorded, and impact of EEG findings on management were reviewed...
October 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Andriy Temko, Gordon Lightbody
It is now generally accepted that EEG is the only reliable way to accurately detect newborn seizures and, as such, prolonged EEG monitoring is increasingly being adopted in neonatal intensive care units. Long EEG recordings may last from several hours to a few days. With neurophysiologists not always available to review the EEG during unsociable hours, there is a pressing need to develop a reliable and robust automatic seizure detection method-a computer algorithm that can take the EEG signal, process it, and output information that supports clinical decision making...
October 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Sebastian Pollandt, Bichun Ouyang, Thomas P Bleck, Katharina M Busl
PURPOSE: Subdural hematomas (SDH) are associated with seizures and epileptiform discharges, but little is known about the prevalence and impact of seizures, status epilepticus and epileptiform discharges on outcomes in patients with isolated acute SDH (aSDH). METHODS: Continuous EEG reports from 76 adult patients admitted to Rush University Medical Center with aSDH between 01/2009 and 03/2012 were reviewed. Clinical and radiographic findings, comorbidities, treatment, and outcome parameters mortality, discharge destination, need for tracheostomy/percutaneous endoscopic gastrostomy (PEG) placement and length of stay (LOS) were assessed...
June 20, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Witold X Chmielewski, Christian Beste
In everyday life successful acting often requires to inhibit automatic responses that might not be appropriate in the current situation. These response inhibition processes have been shown to become aggravated with increasing automaticity of pre-potent response tendencies. Likewise, it has been shown that inhibitory processes are complicated by a concurrent engagement in additional cognitive control processes (e.g. conflicting monitoring). Therefore, opposing processes (i.e. automaticity and cognitive control) seem to strongly impact response inhibition...
October 11, 2016: NeuroImage
Ben Somers, Alexander Bertrand
OBJECTIVE: Chronic, 24/7 EEG monitoring requires the use of highly miniaturized EEG modules, which only measure a few EEG channels over a small area. For improved spatial coverage, a wireless EEG sensor network (WESN) can be deployed, consisting of multiple EEG modules, which interact through short-distance wireless communication. In this paper, we aim to remove eye blink artifacts in each EEG channel of a WESN by optimally exploiting the correlation between EEG signals from different modules, under stringent communication bandwidth constraints...
October 14, 2016: Journal of Neural Engineering
Ellen M Kessel, Alexandria Meyer, Greg Hajcak, Lea R Dougherty, Dana C Torpey-Newman, Gabrielle A Carlson, Daniel N Klein
There is increasing interest among developmental psychopathologists in broad transdiagnostic factors that give rise to a wide array of clinical presentations (multifinality), but little is known about how these processes lead to particular psychopathological manifestations over the course of development. We examined whether individual differences in the error-related negativity (ΔERN), a neural indicator of error monitoring, predicts whether early persistent irritability, a prototypical transdiagnostic construct, is associated with later internalizing versus externalizing outcomes...
November 2016: Development and Psychopathology
Camilo Gutierrez, Ali A Asadi-Pooya, Christopher T Skidmore, Steven D Tobochnik, Carla LoPinto-Khoury, Michael R Sperling
OBJECTIVES: The objective of this study was to describe the clinical characteristics and surgical outcome in patients with gelastic seizures without hypothalamic hamartoma. METHODS: We retrospectively reviewed all the video-EEG reports over a 5-year period (2007-2011) for the occurrence of the terms "laugh" or "giggle" in the text body. All the patients with at least one documented gelastic seizure at the epilepsy monitoring unit were studied. In patients who underwent epilepsy surgery, seizure outcomes were analyzed...
October 10, 2016: Epilepsy & Behavior: E&B
Sami Al Kasab, Rachael A Dawson, Jorge L Jaramillo, Jonathan J Halford
OBJECTIVE: The three important questions in video-EEG monitoring are (1) whether it is productive to monitor patients with low outpatient seizure frequency, (2) whether rapid down-titration of antiepileptic drugs (AEDs) during EMU admission helps generate more recorded seizures, and (3) how long a patient who has not yet had a seizure should be monitored in the EMU. This study aimed to answer these three questions. METHODS: Preadmission seizure frequency, times of AED administration, and times of seizure occurrence were collected on all adult patients admitted to the EMU at the Medical University of South Carolina (MUSC) between 2012 and 2014 - a total of 439 patients...
October 9, 2016: Epilepsy & Behavior: E&B
Sara de la Salle, Joelle Choueiry, Dhrasti Shah, Hayley Bowers, Judy McIntosh, Vadim Ilivitsky, Verner Knott
N-methyl-D-aspartate (NMDA) receptor antagonists administered to healthy humans results in schizophrenia-like symptoms, which preclinical research suggests are due to glutamatergically altered brain oscillations. Here, we examined resting-state electroencephalographic activity in 21 healthy volunteers assessed in a placebo-controlled, double-blind, randomized study involving administration of either a saline infusion or a sub-anesthetic dose of ketamine, an NMDA receptor antagonist. Frequency-specific current source density (CSD) was assessed at sensor-level and source-level using eLORETA within regions of interest of a triple network model of schizophrenia (this model posits a dysfunctional switching between large-scale Default Mode and Central Executive networks by the monitor-controlling Salience Network)...
2016: Frontiers in Pharmacology
Xiao-Su Hu, Clayton A Fisher, Stephanie M Munz, Rebecca L Toback, Thiago D Nascimento, Emily L Bellile, Laura Rozek, Avraham Eisbruch, Francis P Worden, Theodora E Danciu, Alexandre F DaSilva
Patients with head and neck cancer often experience a significant decrease in their quality of life during chemoradiotherapy (CRT) due to treatment-related pain, which is frequently classified as severe. Transcranial direct current stimulation (tDCS) is a method of non-invasive brain stimulation that has been frequently used in experimental and clinical pain studies. In this pilot study, we investigated the clinical impact and central mechanisms of twenty primary motor cortex (M1) stimulation sessions with tDCS during 7 weeks of CRT for head and neck cancer...
2016: Frontiers in Human Neuroscience
Cui Su, Zhenhu Liang, Xiaoli Li, Duan Li, Yongwang Li, Mauro Ursino
OBJECTIVE: Multiscale permutation entropy (MSPE) is becoming an interesting tool to explore neurophysiological mechanisms in recent years. In this study, six MSPE measures were proposed for on-line depth of anesthesia (DoA) monitoring to quantify the anesthetic effect on the real-time EEG recordings. The performance of these measures in describing the transient characters of simulated neural populations and clinical anesthesia EEG were evaluated and compared. METHODS: Six MSPE algorithms-derived from Shannon permutation entropy (SPE), Renyi permutation entropy (RPE) and Tsallis permutation entropy (TPE) combined with the decomposition procedures of coarse-graining (CG) method and moving average (MA) analysis-were studied...
2016: PloS One
Ali A Asadi-Pooya, Marjan Asadollahi, Krzysztof Bujarski, Amin H Rabiei, Narsis Aminian, Dale Wyeth, Michael R Sperling
PURPOSE: Ictal verbal help-seeking has never been systematically studied before. In this study, we evaluated a series of patients with ictal verbal help-seeking to characterize its frequency and underlying etiology. METHODS: We retrospectively reviewed all the long-term video-EEG reports from Jefferson Comprehensive Epilepsy Center over a 12-year period (2004-2015) for the occurrence of the term "help" in the text body. All the extracted reports were reviewed and patients with at least one episode of documented ictal verbal help-seeking in epilepsy monitoring unit (EMU) were studied...
October 7, 2016: Epilepsy & Behavior: E&B
Iwona Mańka-Gaca, Beata Łabuz-Roszak, Agnieszka Machowska-Majchrzak, Zbigniew Kalarus, Beata Średniawa, Krystyna Pierzchała
INTRODUCTION: Electrocardiographic abnormalities in patients with epilepsy are related to the presence of discharges in central autonomic structures and the effect of antiepileptic drugs. These patients are at risk for sudden unexpected death, and cardiac arrhythmias are one of the most probable causes related to it. THE AIM: The heart rate (HR) assessment recorded on electrocardiography (ECG) in the interictal period in patients with newly diagnosed and previously treated epilepsy, depending on the type of changes in electroencephalography (EEG) and the treatment option...
2016: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
Patrick H Finan, Jessica M Richards, Charlene E Gamaldo, Dingfen Han, Jeannie Marie Leoutsakos, Rachel Salas, Michael R Irwin, Michael T Smith
OBJECTIVE: To evaluate the validity of an ambulatory electroencephalographic (EEG) monitor for the estimation of sleep continuity and architecture in healthy adults. METHODS: Healthy, good sleeping participants (N = 14) were fit with both an ambulatory EEG monitor (Sleep Profiler) and a full polysomnography (PSG) montage. EEG recordings were gathered from both devices on the same night, during which sleep was permitted uninterrupted for eight hours. The study was set in an inpatient clinical research suite...
September 29, 2016: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
Martin G Bleichner, Bojana Mirkovic, Stefan Debener
OBJECTIVE: This study presents a direct comparison of a classical EEG cap setup with a new around-the-ear electrode array (cEEGrid) to gain a better understanding of the potential of ear-centered EEG. APPROACH: Concurrent EEG was recorded from a classical scalp EEG cap and two cEEGrids that were placed around the left and the right ear. Twenty participants performed a spatial auditory attention task in which three sound streams were presented simultaneously. The sound streams were three seconds long and differed in the direction of origin (front, left, right) and the number of beats (3, 4, 5 respectively), as well as the timbre and pitch...
October 5, 2016: Journal of Neural Engineering
Lutfu Hanoglu, Sultan Yildiz, Burcu Polat, Sema Demirci, Ahmet Mithat Tavli, Nesrin Yilmaz, Burak Yulug
BACKGROUND: Charles Bonnet Syndrome (CBS) is a rare clinical condition which is characterized with complex hallucinations by visually impaired patients. The pathophysiology of this disorder remains largely unknown, and there is still no proven treatment for this disease. In our study, we aimed to investigate the neural activity through Electroencephalography (EEG) power and evaluate the effect of rivastigmine in combination with alpha-lipoic acid on hallucination in two CBS patients with diabetic retinopathy...
October 3, 2016: Current Clinical Pharmacology
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