Abstract:
:Technical and instrumentation factors play an important role in obtaining reliable information during electrodiagnostic studies. With contemporary electrodiagnostic equipment, neurophysiologic potentials are detected using a variety of electrodes and undergo differential amplification, filtering, conversion to digital form, and finally, analysis and display. Understanding the signal processing principles, limitations, and sources of errors that can occur during this multistep process can improve the technical quality of studies, minimize preventable errors, and improve clinical interpretation. Part I of this minimonograph reviews the basic principles of action potential generation and overviews electrodiagnostic instrumentation. The concept of waveform frequency content is related to the role of filters in suppressing noise while preserving waveform latency, amplitude, and morphology. The electrical characteristics of various surface and needle electrodes influence instrument design and the nature of the potentials recorded. This is especially important in understanding the differences in motor unit characteristics obtained from monopolar and concentric needle electrodes.
journal_name
Muscle Nervejournal_title
Muscle & nerveauthors
Gitter AJ,Stolov WCdoi
10.1002/mus.880180803subject
Has Abstractpub_date
1995-08-01 00:00:00pages
799-811issue
8eissn
0148-639Xissn
1097-4598journal_volume
18pub_type
杂志文章,评审相关文献
MUSCLE & NERVE文献大全abstract::In order to assess the clinical utility of trigemino-facial reflexes in lower facial muscles, we studied perioral reflexes to mechanical and electrical stimulation in 13 patients with spasmodic dysphonia and orofacial dyskinesia and in 7 healthy subjects. Mechanical stimulation of the upper lip of all patients and ele...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880150906
更新日期:1992-09-01 00:00:00
abstract:INTRODUCTION:Piriformis muscle syndrome (PS) is a disorder encompassing a constellation of symptoms, including buttock and hip pain. In this study we aimed to assess the value of ultrasound (US) in the diagnosis of PS. METHODS:Thirty-three clinically diagnosed PS patients and 26 healthy volunteers underwent a clinical...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.26418
更新日期:2019-04-01 00:00:00
abstract::Motoneurons can be activated both reflexly and antidromically following electrical stimulation of peripheral nerves. These H reflexes and F waves are clinically useful responses which interface at the level of the peripheral nerves and the spinal cord. Because these responses are commonly employed in the electrodiagno...
journal_title:Muscle & nerve
pub_type: 杂志文章,评审
doi:10.1002/mus.880151102
更新日期:1992-11-01 00:00:00
abstract::Direct infection of muscle fibers by human T-lymphotropic virus type I (HTLV-I) has recently been reported in a patient with polymyositis infected with both HTLV-I and human immunodeficiency virus (HIV). Coinfections of these viruses are frequently found in the United States. In Kagoshima, Japan, patients with polymyo...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880150108
更新日期:1992-01-01 00:00:00
abstract::The diagnosis of chronic inflammatory demyelinating polyneuropathy (CIDP) relies primarily on clinical and electrophysiologic examination, but the nerve biopsy findings may be supportive, especially in atypical cases. In order to define the usefulness of nerve biopsy in this disease, we retrospectively studied 44 cons...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.10348
更新日期:2003-04-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to describe the therapeutic effects of immunomodulatory therapy in 3 patients with childhood autoimmune necrotizing myopathy with anti-signal recognition particle antibodies (SRP-ANM). METHODS:Before treatment, data on clinical features, muscle pathology, and thigh MRIs were obta...
journal_title:Muscle & nerve
pub_type:
doi:10.1002/mus.25575
更新日期:2017-12-01 00:00:00
abstract::False motor points (FMPs) can occur in intrinsic foot or hand muscles, causing spuriously prolonged distal motor latencies by misrepresenting the compound muscle action potential (CMAP) onset. We investigated the motor point (MP) and possible FMPs in abductor hallucis (AH) by three methods: (1) electrophysiologic mapp...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4598(199609)19:9<1138::AID-MUS9
更新日期:1996-09-01 00:00:00
abstract::An infant presented with congenital weakness, hypotonia, arthrogryposis, atrial tachycardia, and a left intra-abdominal neuroblastoma. Muscle biopsy revealed marked excess of muscle spindles with atrophy of extrafusal fibers. The patient expired at age 14 months from progressive cardiorespiratory failure. Postmortem e...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/1097-4598(200101)24:1<138::aid-mus22>3.0.c
更新日期:2001-01-01 00:00:00
abstract:INTRODUCTION:The ability to individualize recommendations or expectations of disease progression based on a patient's unique characteristics has merit for use in sporadic inclusion body myositis (sIBM). METHODS:Fifty-five subjects with sIBM completed a battery of strength and functional outcomes at 2 study visits. The...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.25373
更新日期:2017-04-01 00:00:00
abstract::Immunologic syndromes are associated with hepatitis B viral (HBV) infection. However, mononeuropathy multiplex (MM), a syndrome in which immune factors may play a role, is rare in acute HBV infection. Few cases of MM associated with HBV infection have been reported. We report a case of acute HBV infection in which MM ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880130304
更新日期:1990-03-01 00:00:00
abstract::The lack of effective therapy for many of the chronic neuromuscular diseases such as amyotrophic lateral sclerosis, hereditary motor sensory neuropathy (Charcot-Marie-Tooth disease), spinocerebellar degenerations and idiopathic polyneuropathy has led to a search for substances that may stimulate peripheral nerve regen...
journal_title:Muscle & nerve
pub_type: 杂志文章,评审
doi:10.1002/mus.880130910
更新日期:1990-09-01 00:00:00
abstract:INTRODUCTION:Conduction block (CB) has been included in the Rajabally criteria for axonal Guillain-Barré syndrome (GBS). Because the nerve roots may be affected early in GBS, detection of proximal CB by the triple stimulation technique (TST) can be useful. METHODS:We describe TST findings in 2 patients who presented w...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.24729
更新日期:2015-12-01 00:00:00
abstract::Central fatigue is a subjective phenomenon which can be examined using transcranial magnetic stimulation (TMS). To assess central fatigue, we compared TMS and peripheral electrical stimulations in patients with central nervous system (CNS) lesions and controls before and after an exhaustive task. The recovery times of...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4598(199611)19:11<1429::AID-MUS
更新日期:1996-11-01 00:00:00
abstract:INTRODUCTION:X-linked myotubular myopathy (XLMTM), characterized by severe hypotonia, weakness, respiratory distress, and early mortality, is rare and natural history studies are few. METHODS:RECENSUS is a multicenter chart review of male XLMTM patients characterizing disease burden and unmet medical needs. Data were ...
journal_title:Muscle & nerve
pub_type: 杂志文章,多中心研究
doi:10.1002/mus.26018
更新日期:2018-04-01 00:00:00
abstract::Doxorubicin is a chemotherapeutic agent prescribed for a variety of tumors. While undergoing treatment, patients exhibit frequent symptoms that suggest respiratory muscle weakness. Cancer patients can receive doxorubicin chemotherapy through either intravenous (IV) or intraperitoneal (IP) injections. We hypothesized t...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.21809
更新日期:2011-01-01 00:00:00
abstract:INTRODUCTION:Despite structural distinction between the transverse and oblique heads of the adductor pollicis, in vivo testing continues to consider the adductor pollicis as functionally simplistic. As a muscle's architecture is a strong indicator of function, in this study we aimed to determine whether the physiologic...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.23933
更新日期:2014-03-01 00:00:00
abstract::Bariatric surgical procedures are increasingly common. In this review, we characterize the neurologic complications of such procedures, including their mechanisms, frequency, and prognosis. Literature review yielded 50 case reports of 96 patients with neurologic symptoms after bariatric procedures. The most common pre...
journal_title:Muscle & nerve
pub_type: 杂志文章,评审
doi:10.1002/mus.20394
更新日期:2006-02-01 00:00:00
abstract:BACKGROUND:Carpal tunnel syndrome (CTS) may be associated with structural lesions or anatomical variations at the wrist, especially in patients whose symptoms are more severe in, or limited to, the nondominant hand. The aims of this study were to identify the type and frequency of structural abnormalities and anatomica...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.27148
更新日期:2020-12-21 00:00:00
abstract::Inhibitory reflex responses to electrical stimulation of the mental nerve were studied in recordings from single motor units (SMU) in the human masseter muscle. A new analytical technique for spike train data was used. Electrical stimuli were delivered to the mental nerve when the SMU fired with two consecutive inter-...
journal_title:Muscle & nerve
pub_type: 临床试验,杂志文章
doi:10.1002/(sici)1097-4598(200002)23:2<259::aid-mus18
更新日期:2000-02-01 00:00:00
abstract::The purpose of this study was to evaluate the effects of spinal cord injury (SCI) and functional electrical stimulation (FES) of paralyzed muscles on type IV collagen content and proteins involving its degradation, which is initiated by matrix metalloproteinase (MMP)-2 and -9 and regulated by their tissue inhibitors (...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(sici)1097-4598(200004)23:4<580::aid-mus18
更新日期:2000-04-01 00:00:00
abstract:INTRODUCTION:Muscle fatigue could have a greater impact on position sense when antagonists of the movement are fatigued. Hence, this study aimed to compare the effects of antagonist and agonist exercise-induced muscle fatigue on knee joint position sense. METHODS:This within-subjects repeated-measures study included 4...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.22018
更新日期:2011-08-01 00:00:00
abstract::We examined and compared a mechanosensitive human sural neuroma and a contralateral sural nerve collected simultaneously from a patient involved in a diabetic neuropathy research protocol. Using indirect immunofluorescence staining. we identified a striking difference in the content within axons of two neuropeptides, ...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/(sici)1097-4598(199707)20:7<875::aid-mus12
更新日期:1997-07-01 00:00:00
abstract::This study compared the force output produced by variable frequency, short-duration trains (VFTs) of electrical pulses with the forces produced by constant frequency, short-duration trains (CFTs). Human quadriceps femoris muscle was stimulated with a 300-msec train of pulses once every second for 180 seconds. Each sub...
journal_title:Muscle & nerve
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/mus.880140909
更新日期:1991-09-01 00:00:00
abstract:INTRODUCTION:Mesenchymal stem cells (MSCs) can differentiate into various cell types. METHODS:In this study we investigated the potential of human tonsil-derived MSCs (T-MSCs) for neuromuscular regeneration in trembler-J (Tr-J) mice, a model for Charcot-Marie-Tooth disease type 1A (CMT1A). RESULTS:T-MSCs differentiat...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.25763
更新日期:2018-03-01 00:00:00
abstract:INTRODUCTION:Paraneoplastic lower motor neuronopathies have been reported rarely with Hodgkin lymphoma. METHODS:We report a case of rapidly progressive motor neuronopathy preceding the diagnosis of Hodgkin lymphoma. RESULTS:A 31-year-old woman developed subacute rapidly progressive quadriparesis. Electrodiagnostic st...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.23464
更新日期:2012-11-01 00:00:00
abstract::Inflammatory myopathies (IMs) occur relatively frequently in dogs, and, with the exception of masticatory muscle myositis (MMM), have not been characterized. This study analyzed the distribution and types of cellular infiltrates in 21 cases of generalized IM, 3 cases of focal IM (MMM), and 1 case with features of both...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20043
更新日期:2004-06-01 00:00:00
abstract::We measured acetylcholinesterase (AChE) in the non-endplate region of rat muscle, documenting its intrinsic activity within muscle fibers, as well as the extrinsic level in the capillaries and endomysium. When each muscle was considered as a whole, intrinsic AChE activity detected within the fibers was stronger in the...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.880130805
更新日期:1990-08-01 00:00:00
abstract::We describe a patient who developed seropositive myasthenia gravis 16 years after she was diagnosed with autoimmune premature ovarian failure with antibodies to the receptor for follicle-stimulating hormone (FSH). Although thymectomy led to improvement of her myasthenic symptoms, menses did not resume. Such combined s...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20067
更新日期:2004-08-01 00:00:00
abstract::The model of chronic low-frequency stimulation for the study of muscle plasticity was developed over 30 years ago. This protocol leads to a transformation of fast, fatigable muscles toward slower, fatigue-resistant ones. It involves qualitative and quantitative changes of all elements of the muscle fiber studied so fa...
journal_title:Muscle & nerve
pub_type: 杂志文章,评审
doi:10.1002/(sici)1097-4598(199906)22:6<666::aid-mus3>
更新日期:1999-06-01 00:00:00
abstract::Normative values of muscle fiber conduction velocity depend on the conditions in which conduction velocity is measured due to the velocity recovery function (VRF) of muscle fibers. In this study the VRF of the compound muscle action potential (CMAP) was assessed following doublet and triplet stimulation in order to in...
journal_title:Muscle & nerve
pub_type: 杂志文章
doi:10.1002/mus.20801
更新日期:2007-08-01 00:00:00