Matthias Keidel

Matthias Keidel
Friedrich-Alexander-University of Erlangen-Nürnberg | FAU

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121
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1,410
Citations
Citations since 2016
12 Research Items
279 Citations
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050

Publications

Publications (121)
Article
Full-text available
Background: Telemedicine improves the quality of acute stroke care in rural regions with limited access to specialized stroke care. We report the first 2 years' experience of implementing a comprehensive telemedical stroke network comprising all levels of stroke care in a defined region. Methods: The TRANSIT-Stroke network covers a mainly rural re...
Article
Die Nutzung moderner Informations- und Telekommunikationstechniken ermöglicht eine Telerehabilitation neurologischer Defizite im häuslichen Umfeld der Patienten. Die aktuelle Studienlage der rehabilitativen Teletherapie zur Verbesserung von Funktions- und Mobilitätseinbußen aufgrund motorischer Defizite nach einem Schlaganfall wird wiedergegeben. Z...
Article
Objective: The Stroke Angel initiative investigates the implementation of telemedicine for improvement of preclinical communication between emergency medical services (EMS) and stroke units in cases of acute stroke. Material and methods: Stroke Angel is a technical system for the telemedical prenotification of patients in cases of suspected stro...
Article
Zusammenfassung Schlafstörungen gehören zu den häufigsten nicht motorischen Symptomen bei der Parkinson- Krankheit. In zahlreichen Fällen ist auch die Vigilanz am Tag mit verstärkter Einschlafneigung und Tageschläfrigkeit gestört. Pathophysiologisch liegen überwiegend nondopaminerg vermittelte Störungen und Fehlsteuerungen von im Hirnstamm lokalisi...
Article
Problems with sleeping belong to the most frequent non-motor symptoms in Parkinson's disease. In numerous cases vigilance is impaired during daytime coupled with increased drowsiness and sleepiness. Pathophysiologically, this involves primarily nondopaminergic problems and deficient control from neurons, localized in the brain stem, and control cir...
Article
The time-synchronous tele-speech therapy offers especially for rural areas in future new opportunities on demand and close to home care of patients with speech and language disorders due to neurological diseases. Patient and therapist interact directly with each other via the screen, so that long distances to a specialized center for speech therapy...
Article
The prospective Study examines the efficacy of linguistic tele health in post-stroke patients. The aim is to establish tele health online as a new additional process of treatment for aphasic patients to close down a lack of therapy after hospitalization. Tele health speech therapy is especially fitted for severe chronic patients with non-fluent aph...
Article
Zusammenfassung Die dialogische Online-Telesprachtherapie bietet vor allem für den ländlichen Raum in Zukunft neue Chancen für eine bedarfsgerechte und wohnortnahe Versorgung der Patienten mit Sprach- und Sprechstörungen. Patient und Therapeut agieren in Echtzeit direkt über den Bildschirm miteinander, sodass dem Patienten aufwändige Wege in ein sp...
Article
Zusammenfassung In einer prospektiven Studie wurde die Effizienz telemedizinischer Online-Sprachtherapie bei Schlaganfall-Patienten überprüft. Studienziel war es, die Tele-Online-Therapie als neue zusätzliche Therapieform zu etablieren. Tele-Online-Sprachtherapie ist speziell für schwer und schwerstbetroffene chronische Patienten mit nicht flüssige...
Article
Currently there are no clinical investigations of novel triptans. However, innovative delivery systems of triptans are under study. In the USA a novel formulation of sumatriptan which is delivered using an iontophoretic transdermal patch is submitted to approval. A needle-free drug delivery system to subcutaneously admin- ister sumatriptan for the...
Article
The modern teleneurological applications are based substantially on the development of information and communication technology. This development forms the technological basis for future resources in the telemedical care of patients. It aims, above all, at an improvement in the medical care and at a perceptible increase of cost efficiency. The tele...
Article
Die Substanzklasse der Triptane ist bei fehlenden Neuentwicklungen nicht erweitert worden. Es liegen jedoch neue Applikationsformen vor. In Deutschland ist ein nadelfreier Injektor zur subkutanen Sumatriptanapplikation zugelassen. In den Vereinigten Staaten befindet sich eine transdermale Applikationsform des Sumatriptans mittels Pflaster in dem Zu...
Article
Zusammenfassung Die modernen teleneurologischen Anwendungen werden wesentlich von der Entwicklung der Informationsund Kommunikationstechnologie getragen. Sie bilden die technologische Grundlage für neue und zukunftsweisende Formen in der telemedizinischen Betreuung von Patienten. Die modernen Entwicklungen in der Teleneurologie zielen vor allem auf...
Article
Full-text available
Mild traumatic brain injury is very common in Western societies, affecting approximately 1.8 million individuals in the USA. Even though between 30% and 90% of patients develop post-traumatic headache, post-traumatic headache remains a very controversial disorder. Particularly when it comes to chronic post-traumatic headache following mild closed h...
Article
Providing expert advice on idiopathic and symptomatic headache disorders has to be based on specific knowledge and experience. In this guideline, the specific aspects of providing such advice in the German health and social justice system, for private insurances, and for the ability to drive vehicles are explained. Distinct recommendations will be...
Article
Zusammenfassung Die Begutachtung von idiopathischen und symptomatischen Kopfschmerzen erfordert besondere Kenntnisse und Erfahrungen. In dieser Leitlinie werden diese Aspekte für die Begutachtung im sozialen Entschädigungsrecht, im privaten Versicherungsrecht und in der Fahrereignung erläutert. Es werden konkrete Hinweise für die Einschätzung des G...
Article
We identified clinical, demographic and psychological predictive factors that may contribute to the development of chronic headache associated with mild to moderate whiplash injury [Quebec Task Force (QTF) ≤ II] and determined the incidence of this chronic pain state. Patients were recruited prospectively from six participating accident and emergen...
Article
The prospective study examines the efficacy of linguistic telepractise in post-stroke patients. The aim is to establish "Synchrotel" as a new additional process of treatment for aphasic patients to bridge a gap of therapy after hospitalization. Synchrotel is especially fitted for severe chronic patients with non-fluent aphasia. By use of synchronic...
Article
Ein Schlaganfall bedeutet immer einen Wettlauf mit der Zeit. Bis zum Eintreffen des Rettungsdienstes sollten möglichst die vollständige Anamnese und eine Basisdiagnostik vorliegen. Gibt es Ausschlusskriterien für eine Thrombolyse? Ist eine Blutdrucksenkung notwendig? Bestimmte Medikamente sind jetzt kontraindiziert. Unser Autor gibt Ihnen die passe...
Article
This chapter presents a study on acute and chronic pain and whiplash injury. The chapter discusses practical management, including acute pain, prolonged pain, general management, therapy for special secondary illnesses, and the treatments that are no longer recommended. Whiplash injury of the cervical spine and surrounding ligaments is typically pr...
Article
The prospective study compares the efficacy of linguistic telepractice with conventionally treated post-stroke patients. The comparison is made by a new method of treatment and integrates new developed specific material. Participants included are chronic patients with non-fluent aphasia. The aim is to establish telepractice as a novel approach of t...
Article
Zusammenfassung In einer prospektiven Studie wird die Effizienz teleneurolinguistischer Therapie mit konventioneller Aphasietherapie bei Schlaganfallpatienten verglichen. Der Vergleich wird mittels einer neuen Therapiemethode und eines spezifisch dafür entwickelten Therapiematerials durchgeführt. Zielgruppe sind schwerst betroffene Patienten mit ni...
Article
According to the classification of the International Headache Society posttraumatic headache (PTH) is defined by a new headache occurring in close temporal relation to a known head, brain or neck trauma, to a whiplash injury, to a traumatic intracranial haematoma or to a craniotomy. Acute PTH develops within 7 days and resolves within 3 months afte...
Article
Zusammenfassung Posttraumatischer Kopfschmerz (PK) ist definiert als ein Kopfschmerz, der nach einem Schädel-Trauma, SchädelHirn-Trauma (SHT), traumatischer intrakranieller Blutung, nach einer HWS-Distorsion mit direktem Nackentrauma, nach einer HWS-Beschleunigungsverletzung (HWS-BV) oder nach einer Kraniotomie auftritt. Akuter PK entwickelt sich i...
Article
Concepts of higher attention functions distinguish focused and divided attention. The present study investigated whether these mental abilities are mediated by common or distinct neural substrates. In a first experiment, 19 healthy subjects were examined with functional brain imaging (fMRI) while they attended to either one or both of two simultane...
Article
The aim of the present study was to examine movement-related potentials (MRPs) in patients in the "chronic" stage after cortical stroke with recovered hemiparesis compared with healthy control subjects. Right index finger MRPs were derived from 12 patients > or =1 year after infarction in the territory of the left middle cerebral artery as well as...
Article
Cervical pain is a prominent symptom in both acute whiplash injury and late whiplash syndrome. However, no systematic analysis of post-traumatic pain development covering several weeks has yet been performed in whiplash patients. It was the aim of the present study to analyse the duration and course of post-traumatic muscle pain due to whiplash inj...
Article
In 1928, Hugo Friedrich Kufs reported on a family with cerebral, retinal, and cutaneous cavernous malformations. Since then, more than 300 families with inherited cavernous malformations have been reported. Genetic studies showed three loci, on chromosomes 7q21-q22 (with the gene CCM1), 7p15-p13 (CCM2), and 3q25.2-q27 (CCM3). The gene product of CC...
Article
Full-text available
Continuous image acquisition as used in most functional magnetic resonance imaging (fMRI) designs may conflict with specific experimental settings due to attendant, noisy gradient switching. In sparse fMRI, single images are recorded with a delay that allows the registration of the predicted peak of an evoked hemodynamic response (HDR). The aim of...
Article
1928 beschrieb Hugo Friedrich Kufs erstmalig eine Familie mit zerebralen, retinalen und kutanen Kavernomen. Mittlerweile wurden ber 300 weitere Familien beschrieben. Ebenfalls wurden drei Genloci 7q21-q22 (mit dem Gen CCM1), 7p15-p13 (Gen CCM2) und 3q25.2-q27 (Gen CCM3) beschrieben, in denen Mutationen zu Kavernomen fhren. Das Genprodukt von CCM1 i...
Article
A case of Wernicke's encephalopathy due to proven thiamine deficiency suffering from upbeat nystagmus (UN) changing to downbeat nystagmus (DN) after a latency of 1 year is presented. The case was also notable for the finding of positive oligoclonal bands in the CSF. The underlying pathophysiological mechanisms and a possible effect of baclofen trea...
Article
Until now the clinical investigation of cervical pain due to whiplash injury is mainly based on finger palpation. The present study introduces a PC-interactive pressure algesimetry to standardize cervical pain measurement. Pressure pain scores of the splenius and trapezius muscles of 23 patients with an acute cervical syndrome after whiplash injury...
Article
The movement-related potential (MRP) is an EEG measure related to self-initiated movements, consisting of the Bereitschaftspotential (BP), the negative slope, and the motor potential. Since in a former study the BP was reduced in acute prefrontal traumatic brain injury (TBI) patients, the present study examined the MRPs' course in follow-up examina...
Article
The present study quantified the course of pressure painfulness of cervical muscles and unaffected structures after whiplash injury by means of PC-interactive pressure algesimetry. The pressure painfulness of the splenius and trapezius muscles and of the digitus II muscles was examined in 20 whiplash patients within the acute injury stage and after...
Article
An enhanced ipsilateral motor potential after prefrontal TBI is known. Our aim was to examine, whether this contributes to movement initiation or execution. EEGs of 22 patients and 28 healthy controls were recorded. Subjects performed self-initiated movements of their right index finger. From the resulting movement-related potentials difference cur...
Article
The present study utilised the PC-interactive pressure algesimetry to quantify cervical pain after whiplash injury. Pressure painfulness of the splenius and trapezius muscles was investigated in patients with an acute cervical syndrome after whiplash injury and compared to that of healthy subjects. Pressure painfulness of neck and shoulder muscles...
Article
In the present study, we used fMRI to investigate whether event-related preparatory processes of self-initiated and externally triggered movements differ. Twenty subjects were examined with 1000 T2*-weighted images in two consecutive sessions. During the first session subjects performed self-initiated abductions of the right index finger. For the s...
Article
Anliegen und Methode: In der vorliegenden Studie wurde die Schmerzhaftigkeit zervikaler Muskeln nach Halswirbelsäulen-Beschleunigungsverletzung (HWS-BV) mittels PC-interaktiver Druckalgesimetrie quantifiziert. Die Schmerzempfindlichkeit der Mm. splenii und Mm. trapezii wurde bei Patienten mit akutem Zervikalsyndrom infolge einer HWS-BV untersucht u...
Article
Ein ipsilateral erhöhtes Motorpotenzial nach präfrontalem SHT ist bekannt. Es sollte untersucht werden, ob es zur Bewegungsinitiierung oder Bewegungsdurchführung beiträgt. Von 22 Patienten und 28 gesunden Probanden wurden EEGs abgeleitet. Es wurden selbstinitiierte rechtsseitige Fingerbewegungen durchgeführt. Aus den bewegungsbezogenen Potenzialen...
Article
In previous spectral analysis investigations, we demonstrated that the spontaneous activity of the alpha EEG is not stationary but rather shows cyclic alterations with a circa 1-min periodicity. Following the conclusion that a power increase in the alpha band implies a neuronal synchronization, and vice versa, an associated decrease of the EEG comp...
Article
Focal brain lesions due to traumatic brain injury (TBI) do not only lead to functional deficits in the lesion area, but also disturb the structurally intact neuronal network connected to the lesion site. Therefore we hypothesized dysfunctions of the cortical motor network after frontal TBI. The movement related potential (MRP) is an EEG component r...
Article
Zur optimalen Behandlung des PK ist eine exakte Akutdiagnostik und verlaufsabhängige Überprüfung der Diagnose von besonderer Zur optimalen Behandlung des PK ist eine exakte Akutdiagnostik und verlaufsabhängige Überprüfung der Diagnose von besonderer Bedeutung. Ein symptomatischer Kopfschmerz (nach Kalottten- bzw. HWK-Fraktur oder bei intrakranielle...
Article
Brainstem-mediated antinociceptive inhibitory reflexes of the temporalis muscle were investigated in 82 patients (47 F, 35 M, mean age 28.3 years, SD 9.4) with acute posttraumatic headache (PH) following whiplash injury but without neurological deficits, bone injury of the cervical spine or a combined direct head trauma on average 5 days after the...
Chapter
Die Beschleunigungsverletzung der Halswirbelsäule (HWS-BV; sogenanntes HWS-Schleudertrauma) ist Folge einer brüsken, passiven Schleuderbewegung des Kopfes. Im klassischen Falle eines Heckauffahrunfalles führt diese bei in der Regel zu tief positionierten Nackenstützen zu einer initialen Reklination mit gefolgter Inklination von Kopf- und Kopfhaltea...
Article
Pheochromocytomas are a feature of the von Hippel-Lindau disease spectrum, a multisystem disorder of autosomal dominant inheritance. Pheochromocytomas are, however, observed during life with a lower frequency than other features of this disease, such as retinal angiomas, haemangioblastomas of the CNS, and renal carcinomas. We present the highly unu...
Article
Wir berichten über eine 18-jährige Patientin, die sich mit den Symptomen eines Pseudotumor cerebri mit beidseitiger, rechtsbetonter Stauungspapille verbunden mit Sehstörungen und seit einem Jahr bestehenden pulsierenden holokraniellen Kopfschmerzen präsentierte. Seit der frühen Kindheit bestand eine bilaterale, inkomplette periphere Fazialisparese....
Article
The responsiveness or excitability of the central nervous system (CNS) to external or internal stimuli is systematically altered corresponding to transient changes of the EEG background activity, mainly in the alpha range. We hypothesise that a transient alpha power increase is due to an underlying increase in synchronisation or coupling strength b...
Article
We report on the case of an 18-year old Greek female who presented with bilateral papilloedema, blurred vision and tension-type pulsating headache that had been present for one year. From early childhood she had been suffering from bilateral incomplete peripheral facial nerve palsies. CCT showed generalised thickening of the skull with bilateral na...
Article
We report a case of a 17-year-old girl with multiple intracerebral tumors. Previously, a neurofibroma in the posterior mediastinum and neurofibromatosis had been diagnosed. She developed a spastic tetraparesis with a prominent hemiparesis of the right side within several weeks. On admission we found clinical signs of elevated intracranial pressure....
Article
Head trauma (HT) and whiplash injury (WI) are followed by a posttraumatic headache (PH) in approx. 90% of patients. The PH due to common WI is located occipitally (67%), is of dullpressing or dragging character (77%) and lasts on average 3 weeks. Tension headache is the most frequent type of PH (85%).Besides posttraumatic cervicogenic headache or s...
Article
Nephropathic cystinosis is a hereditary disorder characterized by a specific defect in the transport of cystine across the lysosomal membrane, leading to an accumulation of protein-free cystine in tissues, including conjunctiva, liver, bone marrow and kidney. Renal transplantation is necessary because of renal failure. With improved life-expectancy...
Article
In patients with an acute cervicocephalic pain syndrome following whiplash injury (n = 12), pressure-pain scores for the splenius and the trapezius muscles on both sides, for the fingers on both sides and for the skull were recorded and compared to a control group. A computer-aided pain measurement was applied, which is presented as an improvement...
Article
In patients with an acute cervicocephalic pain syndrome following whiplash injury (n=12), pressure-pain scores for the splenius and the trapezius muscles on both sides, for the fingers on both sides and for the skull were recorded and compared to a control group. A computer-aided pain measurement was applied, which is presented as an improvement of...
Article
Full-text available
Zur optimalen Behandlung des PK ist eine exakte Akutdiagnostik und verlaufsabhängige Überprüfung der Diagnose von besonderer Bedeutung. Ein symptomatischer Kopfschmerz (nach Kalotten- bzw. HWK-Fraktur oder bei intrakranieller Blutung) darf nicht übersehen werden. Die Behandlung des PK erfolgt in der Akutphase mit einfachen Analgetika, Antiphlogisti...
Article
Head trauma and cervical whiplash injury are followed in 90% of cases by post-traumatic headache (PH), 80% of which resemble holocephalic, occipital and dull, pressing or radiating tension type headache. Post-traumatic cervicogenic headache (approx. 10%), migrainous headache (approx. 3%) or cluster headache are rare. A symptomatic headache after a...
Article
Head trauma (HT) and whiplash injury (WI) are followed by a posttraumatic headache (PH) in approx. 90% of patients. The PH due to common WI is located occipitally (67%), is of dull-pressing or dragging character (77%) and lasts on average 3 weeks. Tension headache is the most frequent type of PH (85%). Besides posttraumatic cervicogenic headache or...
Article
Headache related to the cervical spine is often misdiagnosed and treated inadequately because of confusing and varying terminology. Primary headaches such as tension-type headache and migraine are incorrectly categorized as "cervicogenic" merely because of their occipital localization. Cervicogenic headache as described by Sjaastad presents as a un...
Chapter
Es ist ein allgemeiner Erfahrungswert, daß Patienten mit einem posttraumatischen Syndrom nach Schädel-Hirn-Trauma (SHT) oder „einfacher“ Beschleunigungsverletzung der HWS (HWS-BV) ohne direkte Kontaktverletzung des Schädels neben Kopfschmerz, Nackenschmerz und initialen vegetativen Störungen wie Übelkeit, Brechreiz und Schwindel häufig auch über be...
Article
Head trauma (HT) and whiplash injury (WI) is followed by a posttraumatic headache (PH) in approx. 90% of patients. The PH due to common WI is located occipitally (67%), is of dull-pressing or dragging character (77%) and lasts on average 3 weeks. Tension headache is the most frequent type of PH (85%). Besides posttraumatic cervicogenic headache or...
Article
Head trauma (HT) and whiplash injury (WI) is followed by a posttraumatic headache (PH) in approx. 90% of patients. The PH due to common WI is located occipitally (67%), is of dull-pressing or dragging character (77%) and lasts on average 3 weeks. Tension headache is the most frequent type of PH (85%). Besides posttraumatic cervicogenic headache or...
Chapter
Patienten mit einer Beschleunigungsverletzung der HWS klagen neben den nahezu obligaten Nacken- und Kopfschmerzen häufig über vegetative und „neurasthenische“ Beschwerden (Keidel u. Diener 1993; Keidel und Pearce 1996). Unter den neurasthenischen Auffälligkeiten werden insbesondere vermehrte Reizbarkeit, Schlafstörungen, eine meist gedrückte Stimmu...
Article
Zusammenfassung Kopfschmerzen in Verbindung mit der Halswirbelsäule sind angesichts einer verwirrenden und uneinheitlichen Terminologie ein Tummelplatz für Fehldiagnosen und inadäquate Therapieversuche. Zu Unrecht werden primäre Kopfschmerzen wie der Spannungskopfschmerz und die Migräne alleine aufgrund ihrer okzipitalen Lokalisation als „zervikog...
Article
Hemifacial spasm (HFS) is characterized by painless unilateral involuntary contractions (spasm) of the mimic muscles innervated by the seventh cranial nerve. At the beginning of the disease, the contractions usually occur in the orbicularis oculi muscle and later on progress to involve the entire ipsilateral face over several years. Nevertheless, b...
Chapter
HWS-Schleudertraumen als eine der häufigsten Folgen von Verkehrsunfällen sind durch Kopf- und Nackenschmerzen gekennzeichnet (Keidel und Diener 1993). Darüberhinaus klagen Patienten mit HWS-Schleudertrauma oft über eine mitunter längerdauernde Minderung von Auffassung, Konzentration und Gedächtnis (Krämer 1980; Diener und Keidel 1994). Rasche Ersch...
Chapter
In der Literatur sind bislang 21 Familien mit hereditären, cerebralen Cavernomen beschrieben (Bicknell et al. 1978; Traverso et al. 1991; Steichen-Gersdorf et al. 1992). Die erblichen Cavernome treten als solitäre und multiple Gefäßmalformationen überwiegend in Familien spanisch-mexikanischer Herkunft auf (Bicknell 1989). Wir berichten über den nac...
Chapter
In der Regel führt das sog. HWS-Schleudertrauma zu einer zervikalen Weichteilverletzung, die bei dem leichten Trauma auf eine Schädigung von Muskel und Band beschränkt bleibt und bei mittelschwerem Traumagrad Nerv und/oder Gefäß einbezieht. Dies gilt für mehr als 90% der Fälle (vgl. auch Beitrag Schröter, S. 23 ff). Nur bei den seltenen schwerwiege...
Article
The brainstem mediated inhibitory reflex of the m. temporalis was investigated on average 3 days after the accident in 61 patients (f = 36; m = 25; mean age = 28 years +/- 9 SD) who presented an acute cervico-cephalic syndrome with posttraumatic headache and neck pain following acute whiplash injury but without neurological deficits, bone injury of...
Article
This is a case report of severe neurological complications following lumbar radiculography with the non-ionic x-ray contrast agent Iopamidol. The complication, which consisted of serious mnestic disturbances and various neurological deficits including hemiparesis, was due to intracerebral vascular spasms, demonstrated by cerebral angiography, and T...
Article
Bell's cruciate paralysis with severe paresis or paralysis of the upper extremities and no or minimal paresis of the lower extremities represents a rare lesion of the pyramidal decussation of the lower brain-stem. MRI may show a hypointense lesion on T1-weighted imaging. Prognosis in this syndrome is dependent on the extent of involvement of surrou...
Article
30 patients with acute cervico-cephalic syndrome following whiplash injury (neck and head pain, vegetative symptoms and subjective complaints of impaired mental functions) without neurological deficits were investigated in a prospective follow-up of 3 months with neuropsychological examination in the acute phase (x = 5.7 days) and again 6 and 12 we...
Article
Measurements were done on the biceps muscles of 6 healthy volunteers to record simultaneously the surface electromyogram (EMG) and vibromyogram (VMG) by means of a piezoelectric device (accelerometer). The VMG is generated by mechanical waves due to the contraction mechanism and often measured as sound. The frequency spectrum and integrated value (...
Article
We computed the coherence function between simultaneously recorded endogenous skeletal muscle vibrations (vibromyogram, VMG) and electro‐cortical oscillations (electroencephalogram, EEG) in man in order to demonstrate a functional coupling of these signals. For detection of transient changes in coupling strength a novel computerized technique for c...
Article
Etude de l'hypothese d'une variation cyclique de la frequence seule ou de la bande frequence relative a l'amplitude des tremblements humains et des oscillations musculaires pendant des enregistrements de longue duree
Article
In 10 Parkinsonian patients the effect of a stereotaxically placed subthalamic lesion on the stretch reflex components in the brachialis electromyogram (EMG) was investigated. In an approximately 2 year follow-up study pre-operative reflex EMG responses were compared with data obtained 7 days and 23 months (mean values) after subthalamotomy and /or...
Article
A high rate of (temporal) EEG abnormalities within the group of transsexual patients has been previously described. These reports however were based on visual EEG analyses, which were not sufficiently statistically supported. It therefore seemed necessary to test this observations by utilizing quantitative frequency EEG analysis by using a larger g...
Article
Muscular vibrations were recorded from different relaxed and contracted skeletal muscles in human subjects, with the use of a piezo-electric device. Simultaneous wire-EMG recordings were performed. Spectral analysis of the acceleration curves (vibromyograms) disclosed muscle and function dependent compound frequency patterns. We suggest that the ac...

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