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Neurophysiology monitoring

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https://www.readbyqxmd.com/read/27891080/enhanced-burst-suppression-and-disruption-of-local-field-potential-synchrony-in-a-mouse-model-of-focal-cortical-dysplasia-exhibiting-spike-wave-seizures
#1
Anthony J Williams, Chen Zhou, Qian-Quan Sun
Focal cortical dysplasias (FCDs) are a common cause of brain seizures and are often associated with intractable epilepsy. Here we evaluated aberrant brain neurophysiology in an in vivo mouse model of FCD induced by neonatal freeze lesions (FLs) to the right cortical hemisphere (near S1). Linear multi-electrode arrays were used to record extracellular potentials from cortical and subcortical brain regions near the FL in anesthetized mice (5-13 months old) followed by 24 h cortical electroencephalogram (EEG) recordings...
2016: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/27853667/resection-of-beak-type-thoracic-ossification-of-the-posterior-longitudinal-ligament-from-a-posterior-approach-under-intraoperative-neurophysiological-monitoring-for-paralysis-after-posterior-decompression-and-fusion-surgery
#2
Shiro Imagama, Kei Ando, Zenya Ito, Kazuyoshi Kobayashi, Tetsuro Hida, Kenyu Ito, Yoshimoto Ishikawa, Mikito Tsushima, Akiyuki Matsumoto, Satoshi Tanaka, Masayoshi Morozumi, Masaaki Machino, Kyotaro Ota, Hiroaki Nakashima, Norimitsu Wakao, Yoshihiro Nishida, Yukihiro Matsuyama, Naoki Ishiguro
Study Design Prospective clinical study. Objective Posterior decompression and fusion surgery for beak-type thoracic ossification of the posterior longitudinal ligament (T-OPLL) generally has a favorable outcome. However, some patients require additional surgery for postoperative severe paralysis, a condition that is inadequately discussed in the literature. The objective of this study was to describe the efficacy of a procedure we refer to as "resection at an anterior site of the spinal cord from a posterior approach" (RASPA) for severely paralyzed patients after posterior decompression and fusion surgery for beak-type T-OPLL...
December 2016: Global Spine Journal
https://www.readbyqxmd.com/read/27853424/physical-features-of-visual-images-affect-macaque-monkey-s-preference-for-these-images
#3
Shintaro Funahashi
Animals exhibit different degrees of preference toward various visual stimuli. In addition, it has been shown that strongly preferred stimuli can often act as a reward. The aim of the present study was to determine what features determine the strength of the preference for visual stimuli in order to examine neural mechanisms of preference judgment. We used 50 color photographs obtained from the Flickr Material Database (FMD) as original stimuli. Four macaque monkeys performed a simple choice task, in which two stimuli selected randomly from among the 50 stimuli were simultaneously presented on a monitor and monkeys were required to choose either stimulus by eye movements...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27832065/multiple-language-use-influences-oculomotor-task-performance-neurophysiological-evidence-of-a-shared-substrate-between-language-and-motor-control
#4
Karin Heidlmayr, Karine Doré-Mazars, Xavier Aparicio, Frédéric Isel
In the present electroencephalographical study, we asked to which extent executive control processes are shared by both the language and motor domain. The rationale was to examine whether executive control processes whose efficiency is reinforced by the frequent use of a second language can lead to a benefit in the control of eye movements, i.e. a non-linguistic activity. For this purpose, we administrated to 19 highly proficient late French-German bilingual participants and to a control group of 20 French monolingual participants an antisaccade task, i...
2016: PloS One
https://www.readbyqxmd.com/read/27826789/avoiding-complications-in-bone-and-soft-tissue-ablation
#5
A Nicholas Kurup, Grant D Schmit, Jonathan M Morris, Thomas D Atwell, John J Schmitz, Adam J Weisbrod, David A Woodrum, Patrick W Eiken, Matthew R Callstrom
As with percutaneous ablation of tumors in the liver, lungs, and kidneys, ablation of bone and non-visceral soft tissue tumors carries risk, primarily from collateral damage to vital structures in proximity to the target tumor. Certain risks are of particular interest when ablating bone and non-visceral soft tissue tumors, namely neural or skin injury, bowel injury, fracture, and gas embolism from damaged applicators. Ablation of large volume tumors also carries special risk. Many techniques may be employed by the interventional radiologist to minimize complications when treating tumors in the musculoskeletal system...
November 8, 2016: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/27824858/prefrontal-markers-and-cognitive-performance-are-dissociated-during-progressive-dopamine-lesion
#6
Charles R E Wilson, Julien Vezoli, Frederic M Stoll, Maïlys C M Faraut, Vincent Leviel, Kenneth Knoblauch, Emmanuel Procyk
Dopamine is thought to directly influence the neurophysiological mechanisms of both performance monitoring and cognitive control-two processes that are critically linked in the production of adapted behaviour. Changing dopamine levels are also thought to induce cognitive changes in several neurological and psychiatric conditions. But the working model of this system as a whole remains untested. Specifically, although many researchers assume that changing dopamine levels modify neurophysiological mechanisms and their markers in frontal cortex, and that this in turn leads to cognitive changes, this causal chain needs to be verified...
November 2016: PLoS Biology
https://www.readbyqxmd.com/read/27803238/intraoperative-neurophysiological-monitoring-of-the-laryngeal-nerves-during-anterior-neck-surgery-a-review
#7
Anurag Tewari, Ravi N Samy, Joshua Castle, Tiffany M Frye, Miguel E Habeych, Mahmoud Mohamed
Contributions to the literature on intraoperative neuro monitoring (IONM) during endocrine and head and neck surgery have increased over recent years. Organizational support for neural monitoring during surgery is becoming evident and is increasingly recognized as an adjunct to visual nerve identification. A comprehensive understanding of the role of IONM for prevention of nerve injuries is critical to maximize safety during surgery of the anterior compartment of the neck. This review will explore the potential advantages of IONM to improve the outcomes among patients undergoing anterior neck surgery...
November 1, 2016: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/27792108/efficacy-of-intraoperative-neurophysiologic-monitoring-for-pediatric-cervical-spine-surgery
#8
Daniel G Tobert, Michael P Glotzbecker, M Timothy Hresko, Lawrence I Karlin, Mark R Proctor, John B Emans, Patricia E Miller, Daniel J Hedequist
STUDY DESIGN: Clinical case series OBJECTIVE.: To investigate the efficacy of intraoperative neuromonitoring in pediatric cervical spine surgery SUMMARY OF BACKGROUND DATA.: Intraoperative neuromonitoring (IONM) consisting of somatosensory evoked potentials (SSEP) and transcranial motor evoked potentials (tcMEP) has been shown to effectively prevent permaneny neurologic injury in deformity surgery. The role of IONM during pediatric cervical spine surgery is not well documented. Advances in cervical spine instrumentation have expanded the surgical options in pediatric populations...
October 25, 2016: Spine
https://www.readbyqxmd.com/read/27767401/-awake-clipping-of-cerebral-aneurysms-report-of-initial-series
#9
Saleem I Abdulrauf, Peter Vuong, Ritesh Patel, Raghu Sampath, Ahmed M Ashour, Lauren M Germany, Jonathon Lebovitz, Colt Brunson, Yuvraj Nijjar, J Kyle Dryden, Maheen Q Khan, Mihaela G Stefan, Evan Wiley, Ryan T Cleary, Connor Reis, Jodi Walsh, Paula Buchanan
OBJECTIVE Risk of ischemia during aneurysm surgery is significantly related to temporary clipping time and final clipping that might incorporate a perforator. In this study, the authors attempted to assess the potential added benefit to patient outcomes of "awake" neurological testing when compared with standard neurophysiological testing performed under general anesthesia. The procedure is performed after the induction of conscious sedation, and for the neurological testing, the patient is fully awake. METHODS The authors conducted an institutional review board-approved prospective study of clipping unruptured intracranial aneurysms (UIAs) in 30 consecutive adult patients who underwent awake clipping...
October 21, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27766191/vertebral-column-resection-for-kyphoscoliosis-in-a-patient-with-ehlers-danlos-syndrome-an-intraoperative-neurophysiological-monitoring-alert
#10
Faisal R Jahangiri, Sami Al Eissa, Samir Sayegh, Fahad Al Helal, Shomoukh A Al-Sharif, Monerah M Annaim, Sheryar Muhammad, Tanweer Aziz
A 16-year-old male patient with Ehler-Danlos syndrome (EDS) and a back deformity since birth presented with severe kyphoscoliosis. The patient was neurologically intact but had respiratory and cardiac insufficiencies. A two-stage vertebral column resection (VCR) at T9-T10 with multiple level fusion with multimodality intraoperative neurophysiological monitoring (IONM) was planned.  During the first stage, pedicle screws were placed at multiple spinal levels above and below the VCR level. Upper and lower somatosensory evoked potentials (SSEP), transcranial electrical motor evoked potentials (TCeMEP), and electromyography were monitored continuously and showed no significant changes...
August 31, 2016: Curēus
https://www.readbyqxmd.com/read/27757915/the-impact-of-red-blood-cell-transfusion-on-cerebral-tissue-oxygen-saturation-in-severe-traumatic-brain-injury
#11
Victoria A McCredie, Simone Piva, Marlene Santos, Wei Xiong, Airton Leonardo de Oliveira Manoel, Andrea Rigamonti, Gregory M T Hare, Martin G Chapman, Andrew J Baker
BACKGROUND: There are a range of opinions on the benefits and thresholds for the transfusion of red blood cells in critically ill patients with traumatic brain injury (TBI) and an urgent need to understand the neurophysiologic effects. The aim of this study was to examine the influence of red blood cell transfusions on cerebral tissue oxygenation (SctO2) in critically ill TBI patients. METHODS: This prospective observational study enrolled consecutive TBI patients with anemia requiring transfusion...
October 18, 2016: Neurocritical Care
https://www.readbyqxmd.com/read/27757429/surgeon-driven-neurophysiologic-monitoring-in-a-spinal-surgery-population
#12
Michael Pickell, Stephen M Mann, Rajesh Chakravertty, Daniel P Borschneck
BACKGROUND: This is a prospective observational study examining the use of a surgeon-driven intraoperative neurophysiologic monitoring system. Intraoperative neurophysiologic monitoring is becoming the standard of care for spinal surgeries with potential post-operative neurologic deficits. This standard applies to both adult and pediatric spinal surgery, but a shortage of appropriately trained and certified technologists and physiologists can compromise monitoring capabilities in some centers...
September 2016: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/27757428/can-intraoperative-neurophysiologic-monitoring-during-cervical-spine-decompression-predict-post-operative-segmental-c5-palsy
#13
Siavash S Haghighi, Donald J Blaskiewicz, Bertha Ramirez, Richard Zhang
BACKGROUND: C5 nerve root palsy is a known complication after cervical laminectomy or laminoplasty, characterized by weakness of the deltoid and bicep brachii muscles. The efficacy of intraoperative monitoring of these muscles is currently unclear. In the current prospective study, intraoperative monitoring through somatosensory (SSEPs), motor (TcMEPs) evoked potentials and real-time electromyography activity (EMG) were analyzed for their ability to detect or prevent deltoid muscle weakness after surgery...
September 2016: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/27752543/tactile-stimulation-of-the-face-and-the-production-of-facial-expressions-activate-neurons-in-the-primate-amygdala
#14
Clayton P Mosher, Prisca E Zimmerman, Andrew J Fuglevand, Katalin M Gothard
The majority of neurophysiological studies that have explored the role of the primate amygdala in the evaluation of social signals have relied on visual stimuli such as images of facial expressions. Vision, however, is not the only sensory modality that carries social signals. Both humans and nonhuman primates exchange emotionally meaningful social signals through touch. Indeed, social grooming in nonhuman primates and caressing touch in humans is critical for building lasting and reassuring social bonds. To determine the role of the amygdala in processing touch, we recorded the responses of single neurons in the macaque amygdala while we applied tactile stimuli to the face...
September 2016: ENeuro
https://www.readbyqxmd.com/read/27749617/pygopagus-conjoined-twins-a-neurophysiologic-intraoperative-monitoring-schema
#15
Barrett Cromeens, Jennifer L McKinney, Jeffrey Leonard, Lance Governale, Judy Brown, Christina Henry, Marc Levitt, Richard Wood, Gail Besner, Monica P Islam
Conjoined twins occur in up to 1 in 50,000 live births with approximately 18% joined in a pygopagus configuration at the buttocks. Twins with this configuration display symptoms and carry surgical risks during separation related to the extent of their connection which can include anorectal, genitourinary, vertebral, and neural structures. Neurophysiologic intraoperative monitoring (NIOM) for these cases has been discussed in the literature with variable utility. We present a case of pygopagus twins with fused spinal cords and imperforate anus where the use of NIOM significantly impacted surgical decision making in division of these critical structures...
October 1, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/27749505/a-survey-of-neurophysiology-fellows-in-the-united-states
#16
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
https://www.readbyqxmd.com/read/27742599/testing-interactive-effects-of-automatic-and-conflict-control-processes-during-response-inhibition-a-system-neurophysiological-study
#17
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
https://www.readbyqxmd.com/read/27725685/generation-of-transgenic-marmosets-expressing-genetically-encoded-calcium-indicators
#18
Jung Eun Park, Xian Feng Zhang, Sang-Ho Choi, Junko Okahara, Erika Sasaki, Afonso C Silva
Chronic monitoring of neuronal activity in the living brain with optical imaging techniques became feasible owing to the continued development of genetically encoded calcium indicators (GECIs). Here we report for the first time the successful generation of transgenic marmosets (Callithrix jacchus), an important nonhuman primate model in neurophysiological research, which were engineered to express the green fluorescent protein (GFP)-based family of GECIs, GCaMP, under control of either the CMV or the hSyn promoter...
October 11, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27723803/a-comparison-of-multiscale-permutation-entropy-measures-in-on-line-depth-of-anesthesia-monitoring
#19
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
https://www.readbyqxmd.com/read/27716571/pedicle-screw-position-changing-policy-for-nerve-injury-problems-during-screw-insertion-on-thoracolumbar-compression-fractures
#20
Ahmad Jabir Rahyussalim, Ifran Saleh, M Fajrin Armin, Tri Kurniawati, Ahmad Yanuar Safri
INTRODUCTION: Intraoperative neurophysiologic monitoring (IONM) had important role related to the complications in spinal surgery. Somatosensory Evoked Potential (SSEP), Transcranial electric Muscle Evoked Potentials (tceMEPs), and free run EMG are parameters used to asses functional integrity of the nervous system during surgical procedures. Once warning signal was recognized, surgeon have to make a precise decision to overcome that problem. PRESENTATION OF CASE: We present a 47-year old male with back pain due to compression fracture of thoracic vertebra T12 and lumbar vertebrae L1...
September 23, 2016: International Journal of Surgery Case Reports
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