Search Results - "Werhahn, K. J."

Electroencephalography during functional echo-planar imaging: Detection of epileptic spikes using post-processing methods by Hoffmann, A., Jäger, L., Werhahn, K.J., Jaschke, M., Noachtar, S., Reiser, M.

“…EEG has been used to trigger functional MRI of patients with focal epilepsy, but EEG can be obscured by artifacts during MR data acquisition, and no continuous…”
Get full text

Organization of Cortical Activities Related to Movement in Humans by Marsden, J. F, Werhahn, K. J, Ashby, P, Rothwell, J, Noachtar, S, Brown, P

“…The extent and function of synchronization of oscillatory elements in the human sensorimotor cortex during movement remains unclear. Here we determine whether…”
Get full text

Motor cortex excitability in patients with focal epilepsy by Werhahn, K.J, Lieber, J, Classen, J, Noachtar, S

“…We studied the excitability of the motor cortex using, transcranial magnetic stimulation (TMS) in patients with temporal and extratemporal epilepsy. We applied…”
Get full text

Cognitive-behavioral screening in elderly patients with new-onset epilepsy before treatment by Witt, J.-A., Werhahn, K. J., Krämer, G., Ruckes, C., Trinka, E., Helmstaedter, C.

“…Objectives Cognitive comorbidity at epilepsy onset reflects disease severity and provides a baseline estimate of reserve capacities with regard to the effects…”
Get full text

The clinical features and prognosis of chronic posthypoxic myoclonus by Werhahn, K. J., Brown, P., Thompson, P. D., Marsden, C. D.

“…The clinical and neurophysiologic features of 14 patients with chronic posthypoxic myoclonus are presented. Patients were first seen a mean of 2.5 years…”
Get full text

Abnormalities of the balance between inhibition and excitation in the motor cortex of patients with cortical myoclonus by Brown, P., Ridding, M. C., Werhahn, K. J., Rothwell, J. C., Marsden, C. D.

“…Summary Patients with cortical myoclonus may have purely focal or multifocal jerks, or they may have additional bilateral or generalized jerks, suggesting the…”
Get full text

Epilepsy in the elderly by Werhahn, K J

“…Epilepsies frequently only start in old age and given the current demographic trend the prevalence of epilepsy in the elderly population will increase. This…”
Get full text

The silent period induced by transcranial magnetic stimulation in muscles supplied by cranial nerves: normal data and changes in patients by Werhahn, K J, Classen, J, Benecke, R

“…The silent period induced by transcranial magnetic stimulation of the sensorimotor cortex (Magstim 200, figure of eight coil, loop diameter 7 cm) in active…”
Get full text

Electromyography in MRI-First recordings of peripheral nerve activation caused by fast magnetic field gradients by Hoffmann, A., Faber, S.C., Werhahn, K.J., Jäger, L., Reiser, M.

“…Prior studies on the evaluation of stimulation by MRI were based on the subjective feeling of the volunteers. A wide variety of stimulation thresholds between…”
Get full text

Movement-related cortical potentials preceding repetitive and random-choice hand movements in Parkinson's disease by Touge, T, Werhahn, K J, Rothwell, J C, Marsden, C D

“…The movement-related cortical electroencephalographic potential was recorded from scalp electrodes in 8 patients with idiopathic Parkinson's disease studied at…”
Get more information

Reduction of Benzodiazepine Receptor Binding is Related to the Seizure Onset Zone in Extratemporal Focal Cortical Dysplasia by Arnold, Stephan, Berthele, Achim, Drzezga, Alexander, Tölle, Thomas R., Weis, Serge, Werhahn, Konrad J., Henkel, Anja, Yousry, Tarek A., Winkler, Peter A., Bartenstein, Peter, Noachtar, Soheyl

“…Purpose: Comparison of regional reduction of GABA receptor binding and seizure onset zone in patients with extratemporal epilepsy due to focal cortical…”
Get full text

Epileptic seizures in the elderly by Werhahn, K J

“…Given current demographic trends, the prevalence of epilepsy in the elderly population will increase. This review summarizes the most relevant clinical and…”
Get full text

Differential effects on motorcortical inhibition induced by blockade of GABA uptake in humans by Werhahn, Konrad J., Kunesch, Erwin, Noachtar, Soheyl, Benecke, Reiner, Classen, Joseph

“…Blockade of uptake carriers of γ-aminobutyric acid (GABA) has been shown to modulate inhibition in cortical slices of experimental animals, although little is…”
Get full text

Ictal technetium-99m ethyl cysteinate dimer single-photon emission tomographic findings and propagation of epileptic seizure activity in patients with extratemporal epilepsies by Noachtar, S, Arnold, S, Yousry, T A, Bartenstein, P, Werhahn, K J, Tatsch, K

“…Although ictal single-photon emission tomography (SPET) with technetium-99m ethyl cysteinate dimer (ECD) has a well-established role in the diagnostic…”
Get full text

Analysis and correction of ballistocardiogram contamination of EEG recordings in MR by Jäger, L, Hoffmann, A, Werhahn, K J, Reiser, M F

“…To examine the influence of cardiac activity-related head movements and varying blood pulse frequencies on the shape of electroencephalography (EEG) recordings…”
Get more information

Cortical excitability changes induced by deafferentation of the contralateral hemisphere by WERHAHN, Konrad J, MORTENSEN, Jennifer, KAELIN-LANG, Alain, BOROOJERDI, Babak, COHEN, Leonardo G

“…Short-term deprivation of sensory input by ischaemic nerve block (INB) leads to functional reorganization in the deafferented motor cortex. Here, we show that…”
Get full text

A case of myoclonic cortical tremor after extirpation of a parietal meningioma by Bötzel, Kai, Werhahn, Konrad J.

Get full text

Enhanced tactile spatial acuity and cortical processing during acute hand deafferentation by Van Boven, Robert W, Cohen, Leonardo G, Werhahn, Konrad J, Mortensen, Jennifer, Zeuner, Kirsten E

“…Acute deafferentation of a limb results in bilateral cortical reorganization, but the behavioral consequences of this phenomenon are unknown. Here we found…”
Get full text

Effect of an α1-adrenergic blocker on plasticity elicited by motor training by SAWAKI, L, WERHAHN, K. J, BARCO, R, KOPYLEV, L, COHEN, L. G

Get full text

Motor cortex excitability in patients with migraine with aura and hemiplegic migraine by Werhahn, K J, Wiseman, K, Herzog, J, Förderreuther, S, Dichgans, M, Straube, A

“…We studied the excitability of the motor cortex using transcranial magnetic stimulation (TMS) in 12 patients with migraine with aura (MA) and nine patients…”
Get more information