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Neurophysiological monitoring

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https://www.readbyqxmd.com/read/29667095/can-postoperative-deltoid-weakness-after-cervical-laminoplasty-be-prevented-by-using-intraoperative-neurophysiological-monitoring
#1
Muneharu Ando, Tetsuya Tamaki, Takuji Matsumoto, Kazuhiro Maio, Masatoshi Teraguchi, Noboru Takiguchi, Hiroki Iwahashi, Makiko Onishi, Yukihiro Nakagawa, Hiroshi Iwasaki, Shunji Tsutsui, Masanari Takami, Hiroshi Yamada
Laminoplasty, frequently performed in patients with cervical myelopathy, is safe and provides relatively good results. However, motor palsy of the upper extremities, which occurs after decompression surgery for cervical myelopathy, often reduces muscle strength of the deltoid muscle, mainly in the C5 myotome. The aim of this study was to investigate prospectively whether postoperative deltoid weakness (DW) can be predicted by performing intraoperative neurophysiological monitoring (IONM) during cervical laminoplasty and to clarify whether it is possible to prevent palsy using IONM...
April 17, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29666567/the-neural-correlates-of-grasping-in-left-handers-when-handedness-does-not-matter
#2
Chiara Begliomini, Luisa Sartori, Maria G Di Bono, Sanja Budisavljević, Umberto Castiello
Neurophysiological studies showed that in macaques, grasp-related visuomotor transformations are supported by a circuit involving the anterior part of the intraparietal sulcus, the ventral and the dorsal region of the premotor area. In humans, a similar grasp-related circuit has been revealed by means of neuroimaging techniques. However, the majority of "human" studies considered movements performed by right-handers only, leaving open the question of whether the dynamics underlying motor control during grasping is simply reversed in left-handers with respect to right-handers or not...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29662434/review-of-the-neural-oscillations-underlying-meditation
#3
REVIEW
Darrin J Lee, Edwin Kulubya, Philippe Goldin, Amir Goodarzi, Fady Girgis
Objective: Meditation is one type of mental training that has been shown to produce many cognitive benefits. Meditation practice is associated with improvement in concentration and reduction of stress, depression, and anxiety symptoms. Furthermore, different forms of meditation training are now being used as interventions for a variety of psychological and somatic illnesses. These benefits are thought to occur as a result of neurophysiologic changes. The most commonly studied specific meditation practices are focused attention (FA), open-monitoring (OM), as well as transcendental meditation (TM), and loving-kindness (LK) meditation...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29658939/simultaneous-recordings-of-cortical-local-field-potentials-electrocardiogram-electromyogram-and-breathing-rhythm-from-a-freely-moving-rat
#4
Yu Shikano, Takuya Sasaki, Yuji Ikegaya
Monitoring the physiological dynamics of the brain and peripheral tissues is necessary for addressing a number of questions about how the brain controls body functions and internal organ rhythms when animals are exposed to emotional challenges and changes in their living environments. In general experiments, signals from different organs, such as the brain and the heart, are recorded by independent recording systems that require multiple recording devices and different procedures for processing the data files...
April 2, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29643629/intraoperative-neurophysiological-monitoring-team-s-communiqu%C3%A3-with-anesthesia-professionals
#5
Anurag Tewari, Lisa Francis, Ravi N Samy, Dean C Kurth, Joshua Castle, Tiffany Frye, Mohamed Mahmoud
Background and Aims: Intraoperative neurophysiological monitoring (IONM) is the standard of care during many spinal, vascular, and intracranial surgeries. High-quality perioperative care requires the communication and cooperation of several multidisciplinary teams. One of these multidisciplinary services is intraoperative neuromonitoring (IONM), while other teams represent anesthesia and surgery. Few studies have investigated the IONM team's objective communication with anesthesia providers...
January 2018: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/29628943/provocative-testing-prior-to-anterior-cerebral-artery-fusiform-aneurysm-embolization
#6
Pouria Moshayedi, Dan-Victor Giurgiutiu, Andrew F Ducruet, Brian T Jankowitz, Ashutosh P Jadhav
We report 2 cases of parent artery occlusion (PAO) for anterior cerebral artery (ACA) fusiform aneurysm embolization after superselective provocative testing was performed to confirm distal territory viability. The first case involves a patient in the second decade of life who presented with subarachnoid hemorrhage and underwent PAO after a balloon test occlusion in the distal ACA revealed no neurophysiology changes. The second case involves another patient in the forth decade of life who presented with an enlarging pseudoaneurysm and underwent PAO after a sodium amobarbital infusion in the distal ACA revealed no clinical change...
February 2018: Interventional Neurology
https://www.readbyqxmd.com/read/29619317/influence-of-inter-stimulus-interval-of-spinal-cord-stimulation-in-patients-with-disorders-of-consciousness-a-preliminary-functional-near-infrared-spectroscopy-study
#7
Yujin Zhang, Yi Yang, Juanning Si, Xiaoyu Xia, Jianghong He, Tianzi Jiang
Spinal cord stimulation (SCS) is a promising treatment for disorders of consciousness (DOC), but the underlying mechanism and most effective procedures remain uncertain. To optimize the protocol, previous studies evaluated the frequency-specific effects of SCS on neurophysiological activities. However, whether and how the inter-stimulus interval (ISI) parameter affects the SCS neuromodulation in DOC remains unknown. We enrolled nine DOC patients who had implanted SCS devices and conducted three different durations of ISIs...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29594485/risk-stratification-of-oxaliplatin-induced-peripheral-neurotoxicity-applying-electrophysiological-testing-of-dorsal-sural-nerve
#8
Paola Alberti, Emanuela Rossi, Andreas A Argyriou, Haralabos P Kalofonos, Chiara Briani, Mario Cacciavillani, Marta Campagnolo, Jordi Bruna, Roser Velasco, Marina E Cazzaniga, Diego Cortinovis, Maria G Valsecchi, Guido Cavaletti
PURPOSE: We aimed to verify the predictiveness of dorsal sural nerve neurophysiological monitoring in obtaining risk stratification for oxaliplatin-induced peripheral neurotoxicity (OXAPN). METHODS: We conducted a secondary analysis on a cohort of 110 colorectal cancer patients who were evaluated clinically and neurophysiologically before chemotherapy, at mid-treatment and at discontinuation. We applied the classification tree analysis method to predict the end-of-treatment OXAPN neurophysiological diagnosis, using data recorded at mid-treatment...
March 29, 2018: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29592888/dorsal-and-ventral-horn-atrophy-is-associated-with-clinical-outcome-after-spinal-cord-injury
#9
Eveline Huber, Gergely David, Alan J Thompson, Nikolaus Weiskopf, Siawoosh Mohammadi, Patrick Freund
OBJECTIVE: To investigate whether gray matter pathology above the level of injury, alongside white matter changes, also contributes to sensorimotor impairments after spinal cord injury. METHODS: A 3T MRI protocol was acquired in 17 tetraplegic patients and 21 controls. A sagittal T2-weighted sequence was used to characterize lesion severity. At the C2-3 level, a high-resolution T2*-weighted sequence was used to assess cross-sectional areas of gray and white matter, including their subcompartments; a diffusion-weighted sequence was used to compute voxel-based diffusion indices...
March 28, 2018: Neurology
https://www.readbyqxmd.com/read/29571753/disrupted-network-cross-talk-hippocampal-dysfunction-and-hallucinations-in-schizophrenia
#10
Stephanie M Hare, Alicia S Law, Judith M Ford, Daniel H Mathalon, Aral Ahmadi, Eswar Damaraju, Juan Bustillo, Aysenil Belger, Hyo Jong Lee, Bryon A Mueller, Kelvin O Lim, Gregory G Brown, Adrian Preda, Theo G M van Erp, Steven G Potkin, Vince D Calhoun, Jessica A Turner
Hallucinations characterize schizophrenia, with approximately 59% of patients reporting auditory hallucinations and 27% reporting visual hallucinations. Prior neuroimaging studies suggest that hallucinations are linked to disrupted communication across distributed (sensory, salience-monitoring and subcortical) networks. Yet, our understanding of the neurophysiological mechanisms that underlie auditory and visual hallucinations in schizophrenia remains limited. This study integrates two resting-state functional magnetic resonance imaging (fMRI) analysis methods - amplitudes of low-frequency fluctuations (ALFF) and functional network connectivity (FNC) - to explore the hypotheses that (1) abnormal FNC between salience and sensory (visual/auditory) networks underlies hallucinations in schizophrenia, and (2) disrupted hippocampal oscillations (as measured by hippocampal ALFF) beget changes in FNC linked to hallucinations...
March 20, 2018: Schizophrenia Research
https://www.readbyqxmd.com/read/29565607/interpersonal-touch-enhances-cognitive-control-a-neurophysiological-investigation
#11
Blair Saunders, Anja Riesel, Julia Klawohn, Michael Inzlicht
Touch is central to mammalian communication, socialization, and wellbeing. Despite this prominence, interpersonal touch is relatively understudied. In this preregistered investigation, we assessed the influence of interpersonal touch on the subjective, neural, and behavioral correlates of cognitive control. Forty-five romantic couples were recruited (N = 90; dating >6 months), and one partner performed an inhibitory control task while electroencephalography was recorded to assess neural performance monitoring...
March 22, 2018: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/29557851/automatic-processing-of-pragmatic-information-in-the-human-brain-a-mismatch-negativity-study
#12
Ming Zhao, Tao Liu, Feiyan Chen
Language comprehension involves pragmatic information processing, which allows world knowledge to influence the interpretation of a sentence. This study explored whether pragmatic information can be automatically processed during spoken sentence comprehension. The experiment adopted the mismatch negativity (MMN) paradigm to capture the neurophysiological indicators of automatic processing of spoken sentences. Pragmatically incorrect ('Foxes have wings') and correct ('Butterflies have wings') sentences were used as the experimental stimuli...
March 19, 2018: Neuroreport
https://www.readbyqxmd.com/read/29530734/neurophysiological-processes-and-functional-neuroanatomical-structures-underlying-proactive-effects-of-emotional-conflicts
#13
Marie Luise Schreiter, Witold Chmielewski, Christian Beste
There is a strong inter-relation of cognitive and emotional processes as evidenced by emotional conflict monitoring processes. In the cognitive domain, proactive effects of conflicts have widely been studied; i.e. effects of conflicts in the n-1 trial on trial n. Yet, the neurophysiological processes and associated functional neuroanatomical structures underlying such proactive effects during emotional conflicts have not been investigated. This is done in the current study combining EEG recordings with signal decomposition methods and source localization approaches...
March 9, 2018: NeuroImage
https://www.readbyqxmd.com/read/29526251/robot-assisted-pudendal-neurolysis-in-the-treatment-of-pudendal-nerve-entrapment-syndrome
#14
P Moscatiello, D Carracedo Calvo, L Yupanqui Guerra, M E Rivera Martínez, A Mendiola de la Hoza, M Sánchez Encinas
INTRODUCTION: Pudendal nerve entrapment syndrome (PNE) is characterised by the presence of neuropathic pain in the pudendal nerve (PN) territory, associated or not with urinary, defecatory and sexual disorders. Surgical PN decompression is an effective and safe alternative for cases when conservative treatment fails. The aim of this study is to describe the first robot-assisted pudendal neurolysis procedure performed in our country. MATERIAL AND METHODS: We describe step by step the technique of robot-assisted laparoscopic neurolysis of the left PN performed with intraoperative neurophysiological monitoring on a 60-year-old patient diagnosed with left PNE...
March 8, 2018: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/29526069/clinical-and-radiological-outcomes-of-posterior-vertebral-column-resection-for-severe-spinal-deformities
#15
Byoung Hun Lee, Seung-Jae Hyun, Ki-Jeong Kim, Tae-Ahn Jahng, Yongjung J Kim, Hyun-Jib Kim
OBJECTIVE: The aim of this study was to investigate clinical and radiological outcomes of patients who underwent posterior vertebral column resection (PVCR) by a single neurosurgeon in a single institution. METHODS: Thirty-four consecutive patients with severe spinal deformities who underwent PVCR between 2010 and 2016 were enrolled. The radiographic measurements included a kyphotic angle of PVCR levels (VCR angle), sagittal vertical axis (SVA), thoracic kyphosis, lumbar lordosis (LL), and spinopelvic parameters...
March 2018: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29505853/use-of-motor-evoked-potentials-during-lateral-lumbar-interbody-fusion-reduces-postoperative-deficits
#16
Michael R Riley, Adam T Doan, Richard W Vogel, Alexander O Aguirre, Kayla S Pieri, Edward H Scheid
Background Context Intraoperative neurophysiological monitoring (IONM) has gained rather wide-spread acceptance as a method to mitigate risk to the lumbar plexus during Lateral Lumbar Interbody Fusion (LLIF) surgery. The most common approach to IONM involves using only electromyography (EMG) monitoring, and the rate of postoperative deficit remains unacceptably high. Other test modalities, such as transcranial electric motor-evoked potentials (tcMEPs) and somatosensory-evoked potentials (SSEPs), may be more suitable for monitoring neural integrity but they have not been widely adopted during LLIF...
March 2, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29501883/positive-pharmacologic-provocative-testing-with-methohexital-during-cerebral-arteriovenous-malformation-embolization
#17
Orhan Bican, Charles Cho, Leslie Lee, Viet Nguyen, Scheherazade Le, Jeremy Heit, Jaime Lopez
A middle-aged patient underwent staged endovascular embolization of a Spetzler-Martin grade V right parietal arteriovenous malformation(AVM).In the fifth endovascular embolization, after methohexital 10 mg injection into a right posterior choroidal artery feeding the AVM nidus, there was an immediate change in the electroencephalogram (EEG) with simultaneous loss of motor evoked potentials (MEPs) in the bilateral upper and lower extremities and a delayed change in somatosensory evoked potential responses (SSEPs)...
February 25, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29499019/differences-in-the-transcranial-motor-evoked-potentials-between-proximal-and-distal-lower-extremity-muscles
#18
Pooja Parikh, Justin Cheongsiatmoy, Parastou Shilian, Andres A Gonzalez
PURPOSE: Transcranial motor evoked potentials (TcMEPs) are the preferred modality to monitor the integrity of motor pathways during surgery. Recently, it has also been used as a method to help with detection of nerve roots injuries. Adequate baseline muscle responses are vital to detect nerve injury. We have observed that TcMEP responses are not homogeneous across multiple myotomes, but this has not been studied systematically. Our objective is to determine whether there are any relative differences in amplitude or morphology of TcMEPs across various lower extremity muscles...
March 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29496610/integration-of-reward-with-cost-anticipation-during-performance-monitoring-revealed-by-erps-and-eeg-spectral-perturbations
#19
Davide Gheza, Rudi De Raedt, Chris Baeken, Gilles Pourtois
Effort expenditure has an aversive connotation and it can lower hedonic feelings. In this study, we explored the electrophysiological correlates of the complex interplay of reward processing with cost anticipation. To this aim, healthy adult participants performed a gambling task where the outcome (monetary reward vs. no-reward) and its expectancy were manipulated on a trial by trial basis while 64-channel EEG was recorded. Crucially, on some trials, the no-reward outcome could be transformed to a rewarding one, pending effort expenditure by means of an orthogonal dot clicking task, enabling us to compare at the electrophysiological level reward processing when cost was anticipated or not...
February 26, 2018: NeuroImage
https://www.readbyqxmd.com/read/29490011/awake-surgery-for-a-violin-player-monitoring-motor-and-music-performance-a-case-report
#20
Vitória Piai, Sandra H Vos, Reinhard Idelberger, Pauline Gans, Jonne Doorduin, Mark Ter Laan
Objective: We report the case of a professional violin player who underwent an awake craniotomy to resect a tumor in the left supplementary motor area, an area involved in motor planning. Method: A careful pre- and intraoperative monitoring plan for music performance and complex motor function was established that could be used in combination with cortical stimulation. Results: The patient suffered an epileptic seizure during cortical stimulation...
February 27, 2018: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
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