Miguel Keidel

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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(More)
Twenty right-handed subjects participated in a study investigating the cerebral potentials related to three complex actions: (1) writing one's own signature, (2) drawing a pentagram, and (3) fast meaningless scribbling. The Bereitschaftspotential (BP, readiness potential) started as early as 3 s prior to writing, 2.5 s prior to drawing, but only 1.5 s prior(More)
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 complexity(More)
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 activity of(More)
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, Antiphlogistika(More)
Headache in association with the cervical spine is often misdiagnosed and treated inadequately due to 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 described by Sjastaad presents as a(More)
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 CCM1 is(More)
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 emergency(More)
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(More)