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Neurophysiology monitoring

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https://www.readbyqxmd.com/read/28324227/intraoperative-neurophysiologic-monitoring-in-spinal-intradural-extramedullary-tumors-only-a-prognostic-tool
#1
REVIEW
D Nasi, R Ghadirpour, F Servadei
No abstract text is available yet for this article.
March 21, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28319506/the-input-is-reflected-in-the-output-evaluating-neurophysiologic-monitors-with-simulated-data
#2
Matthias Kreuzer, Gerhard Schneider, Paul S García
No abstract text is available yet for this article.
March 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28291212/-surgical-treatment-of-eloquent-brain-area-tumors-using-neurophysiological-mapping-of-the-speech-and-motor-areas-and-conduction-tracts
#3
A A Zuev, E N Korotchenko, D S Ivanova, N V Pedyash, B A Teplykh
AIM: To evaluate the efficacy of intraoperative neurophysiological mapping in removing eloquent brain area tumors (EBATs). MATERIAL AND METHODS: Sixty five EBAT patients underwent surgical treatment using intraoperative neurophysiological mapping at the Pirogov National Medical and Surgical Center in the period from 2014 to 2015. On primary neurological examination, 46 (71%) patients were detected with motor deficits of varying severity. Speech disorders were diagnosed in 17 (26%) patients...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28289600/conflict-processing-in-juvenile-patients-with-neurofibromatosis-type-1-nf1-and-healthy-controls-two-pathways-to-success
#4
Annet Bluschke, Maja von der Hagen, Katharina Papenhagen, Veit Roessner, Christian Beste
Neurofibromatosis Type 1 (NF1) is a monogenetic autosomal-dominant disorder with a broad spectrum of clinical symptoms and is commonly associated with cognitive deficits. Patients with NF1 frequently exhibit cognitive impairments like attention problems, working memory deficits and dysfunctional inhibitory control. The latter is also relevant for the resolution of cognitive conflicts. However, it is unclear how conflict monitoring processes are modulated in NF1. To examine this question in more detail, we used a system neurophysiological approach combining high-density ERP recordings with source localisation analyses in juvenile patients with NF1 and controls during a flanker task...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28284239/integrating-self-localization-proprioception-pain-and-performance
#5
Valeria Bellan, Sarah B Wallwork, Alberto Gallace, Charles Spence, G Lorimer Moseley
The ability to know where our own body and body parts are in space is often taken for granted, yet it is of fundamental importance for the majority of our everyday activities, let alone high performance activities such as dancing. This review focuses on the concept of self-localization, the monitoring of the space surrounding one's body, and the disruptions that occur in the presence of pain. A conceptual model is presented of the cortical body matrix with which to consider self-localization; also provided are its historical context, underlying assumptions, and current limitations...
March 1, 2017: Journal of Dance Medicine & Science
https://www.readbyqxmd.com/read/28277465/understanding-the-neurophysiology-and-quantification-of-brain-perfusion
#6
Elizabeth Tong, Leo Sugrue, Max Wintermark
Newer neuroimaging technology has moved beyond pure anatomical imaging and ventured into functional and physiological imaging. Perfusion magnetic resonance imaging (PWI), which depicts hemodynamic conditions of the brain at the microvascular level, has an increasingly important role in clinical central nervous system applications. This review provides an overview of the established role of PWI in brain tumor and cerebrovascular imaging, as well as some emerging applications in neuroimaging. PWI allows better characterization of brain tumors, grading, and monitoring...
March 8, 2017: Topics in Magnetic Resonance Imaging: TMRI
https://www.readbyqxmd.com/read/28259263/prognosis-of-significant-intraoperative-neurophysiologic-monitoring-events-in-severe-spinal-deformity-surgery
#7
Benjamin T Bjerke, Daniel M Zuchelli, Venu M Nemani, Ronald G Emerson, Han Jo Kim, Oheneba Boachie-Adjei
BACKGROUND: Intraoperative neurophysiologic monitoring has become a standard tool for mitigating neurologic injury during spinal deformity surgery. Significant monitoring changes during deformity correction are relatively uncommon. This study characterizes precipitating factors for neurologic injury and relates significant events and postoperative neurologic prognosis. METHODS: All spinal deformity surgeries at a West African hospital over a 12-month period were reviewed...
March 2017: Spine Deformity
https://www.readbyqxmd.com/read/28243999/physiological-effects-of-early-incremental-mobilization-of-a-patient-with-acute-intracerebral-and-intraventricular-hemorrhage-requiring-dual-external-ventricular-drainage
#8
Sowmya Kumble, Elizabeth K Zink, Mackenzie Burch, Sandra Deluzio, Robert D Stevens, Mona N Bahouth
BACKGROUND: Recent trials have challenged the notion that very early mobility benefits patients with acute stroke. It is unclear how cerebral autoregulatory impairments, prevalent in this population, could be affected by mobilization. The safety of mobilizing patients who have external ventricular drainage (EVD) devices for cerebrospinal fluid diversion and intracranial pressure (ICP) monitoring is another concern due to risk of device dislodgment and potential elevation in ICP. We report hemodynamic and ICP responses during progressive, device-assisted mobility interventions performed in a critically ill patient with intracerebral hemorrhage (ICH) requiring two EVDs...
February 27, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28235778/clinical-evoked-potentials-in-neurology-a-review-of-techniques-and-indications
#9
REVIEW
Agustina M Lascano, Patrice H Lalive, Martin Hardmeier, Peter Fuhr, Margitta Seeck
Evoked potentials (EPs) are a powerful and cost-effective tool for evaluating the integrity and function of the central nervous system. Although imaging techniques, such as MRI, have recently become increasingly important in the diagnosis of neurological diseases, over the past 30 years, many neurologists have continued to employ EPs in specific clinical applications. This review presents an overview of the recent evolution of 'classical' clinical applications of EPs in terms of early diagnosis and disease monitoring and is an extension of a previous review published in this journal in 2005 by Walsh and collaborators...
February 24, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28218803/error-monitoring-and-empathy-explorations-within-a-neurophysiological-context
#10
Azhani Amiruddin, Simone N Fueggle, An T Nguyen, Gilles E Gignac, Karen L Clunies-Ross, Allison M Fox
Past literature has proposed that empathy consists of two components: cognitive and affective empathy. Error monitoring mechanisms indexed by the error-related negativity (ERN) have been associated with empathy. Studies have found that a larger ERN is associated with higher levels of empathy. We aimed to expand upon previous work by investigating how error monitoring relates to the independent theoretical domains of cognitive and affective empathy. Study 1 (N = 24) explored the relationship between error monitoring mechanisms and subcomponents of empathy using the Questionnaire of Cognitive and Affective Empathy and found no relationship...
February 20, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28215877/my-friends-have-a-word-for-it-event-related-potentials-evidence-of-how-social-risk-inhibits-purchase-intention
#11
Qian Shang, Guanxiong Pei, Jia Jin
Social risk refers to the potential disapproval from significant others (especially family or friends), and it is crucial in dissuading consumers from making decisions to purchase. The current study explored the neural process underlying how social risk influenced people's purchase intention. Event-related potentials (ERPs) were employed to investigate the electrophysiological process when subjects evaluated their purchase intention for products with social risk factors. The behavioral data showed that the social risk condition inhibited people's purchase intention compared to the control condition...
March 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28185615/clinical-study-of-neuroregen-scaffold-combined-with-human-mesenchymal-stem-cells-for-the-repair-of-chronic-complete-spinal-cord-injury
#12
Yannan Zhao, Fengwu Tang, Guang Han, Nuo Wang, Na Yin, Bing Chen, Xianfeng Jiang, Chen Yun, Wanjun Han, Changyu Zhao, Shixiang Cheng, Zhifeng Xiao, Sai Zhang, Jianwu Dai
Regeneration of damaged neurons and recovery of sensation and motor function after complete spinal cord injury (SCI) are challenging. We previously developed a collagen scaffold, NeuroRegen scaffold, to promote axonal growth along collagen fibers and inhibit glial scar formation after SCI. When functionalized with multiple biomolecules, this scaffold promoted neurological regeneration and functional recovery in animals with SCI. In this study, eight patients with chronic complete SCI were enrolled to examine the safety and efficacy of implanting NeuroRegen scaffold with human umbilical cord mesenchymal stem cells (MSCs)...
February 9, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28175547/319%C3%A2-predictive-value-of-intraoperative-neurophysiological-monitoring-during-spine-surgery-a-prospective-analysis-of-4489-consecutive-patients
#13
Matthew Pease, Gurpreet Surinder Gandhoke, Jaspreet Kaur, Parthasarthy Thirumala, Jeffrey Balzer, Donald Crammond, David O Okonkwo, Adam S Kanter
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28169132/electroencephalographic-characteristics-of-status-epilepticus-after-cardiac-arrest
#14
Sofia Backman, Erik Westhall, Irina Dragancea, Hans Friberg, Malin Rundgren, Susann Ullén, Tobias Cronberg
OBJECTIVE: To describe the electrophysiological characteristics and pathophysiological significance of electrographic status epilepticus (ESE) after cardiac arrest and specifically compare patients with unequivocal ESE to patients with rhythmic or periodic borderline patterns defined as possible ESE. METHODS: Retrospective cohort study of consecutive patients treated with targeted temperature management and monitored with simplified continuous EEG. Patients with ESE were identified and electrographically characterised until 72h after ESE start using the standardised terminology of the American Clinical Neurophysiology Society...
April 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28164736/strength-of-20-hz-rebound-and-motor-recovery-after-stroke
#15
Eeva Parkkonen, Kristina Laaksonen, Harri Piitulainen, Johanna Pekkola, Lauri Parkkonen, Turgut Tatlisumak, Nina Forss
BACKGROUND: Stroke is a major cause of disability worldwide, and effective rehabilitation is crucial to regain skills for independent living. Recently, novel therapeutic approaches manipulating the excitatory-inhibitory balance of the motor cortex have been introduced to boost recovery after stroke. However, stroke-induced neurophysiological changes of the motor cortex may vary despite of similar clinical symptoms. Therefore, better understanding of excitability changes after stroke is essential when developing and targeting novel therapeutic approaches...
January 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28164277/event-related-potential-measures-of-executive-functioning-from-preschool-to-adolescence
#16
REVIEW
Michelle Downes, Joe Bathelt, Michelle De Haan
Executive functions are a collection of cognitive abilities necessary for behavioural control and regulation, and are important for school success. Executive deficits are common across acquired and developmental disorders in childhood and beyond. This review aims to summarize how studies using event-related potential (ERP) can provide insight into mechanisms underpinning how executive functions develop in children from preschool to adolescence. We specifically focus on ERP components that are considered to be well-established markers of executive functioning, including the ability to resist distraction (inhibition, N200), hold scenes in mind (visuospatial working memory, contralateral delay activity), attend to specific stimuli (information processing, P300), follow rules (response monitoring, error-related negativity [ERN], and error-related positivity [Pe]), and adjust to feedback (outcome monitoring, feedback-related negativity)...
February 6, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28147418/electroencephalography-as-a-prognostic-tool-after-cardiac-arrest
#17
Erik Westhall
Multiple prognostic tools are used to evaluate prognosis for comatose survivors resuscitated after cardiac arrest (CA). Next to the clinical neurologic examination, electroencephalography (EEG) is the most commonly used method to assess prognosis. However, the reliability of EEG has been limited by varying classification systems, interrater variability, and the influence of sedation. Another important purpose of EEG is to evaluate clinical and subclinical seizures. The American Clinical Neurophysiology Society (ACNS) recently proposed a standardized EEG terminology for critically ill patients suitable for use after CA...
February 2017: Seminars in Neurology
https://www.readbyqxmd.com/read/28138779/outcome-of-l5-radiculopathy-after-reduction-and-instrumented-transforaminal-lumbar-interbody-fusion-of-high-grade-l5-s1-isthmic-spondylolisthesis-and-the-role-of-intraoperative-neurophysiological-monitoring
#18
Ralph T Schär, Martin Sutter, Anne F Mannion, Andreas Eggspühler, Dezsö Jeszenszky, Tamas F Fekete, Frank Kleinstück, Daniel Haschtmann
PURPOSE: To evaluate the incidence and course of iatrogenic L5 radiculopathy after reduction and instrumented fusion of high-grade L5-S1 isthmic spondylolisthesis and the role of intraoperative neurophysiological monitoring (IONM). METHODS: Consecutive patients treated for high-grade spondylolisthesis with IONM from 2005 to 2013 were screened for eligibility. Prospectively collected clinical and surgical data as well as radiographic outcomes were analyzed retrospectively...
January 31, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28130655/spinal-intradural-extramedullary-tumors-the-value-of-intraoperative-neurophysiologic-monitoring-on-surgical-outcome
#19
Ran Harel, David Schleifer, Shmuel Appel, Moshe Attia, Zvi R Cohen, Nachshon Knoller
Nerve sheath tumors and meningiomas account for most intradural extramedullary (IDEM) tumors. These tumors are benign and amenable to complete surgical resection. In recent years, these surgeries are performed with intraoperative neurophysiologic monitoring (IONM) in order to minimize neurological injury, but the evidence for the statistical efficacy of this utility is lacking. This paper evaluates IONM benefits in IDEM tumor resection. Data of patients treated surgically for spinal intradural tumors from 1998 to 2003 was previously collected and analyzed...
January 27, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28130191/the-norepinephrine-system-shows-information-content-specific-properties-during-cognitive-control-evidence-from-eeg-and-pupillary-responses
#20
Moritz Mückschel, Witold Chmielewski, Tjalf Ziemssen, Christian Beste
The ability to exert cognitive control is a major function of the prefrontal cortex, the efficiency of which depends on the phasic release of norepinephrine (NE) at particular time points. However, different aspects of information are simultaneously processed at any given moment. This raises the question of whether the norepinephrine system is also capable of specifically modulating selected aspects of all ongoing information processing, especially when several of those processes are carried out by the same functional neuroanatomical structure at the same time...
January 24, 2017: NeuroImage
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