Results 251 to 260 of about 390,093 (289)

Cortical excitability in patients with essential tremor

Muscle & Nerve, 1998
We used transcranial magnetic stimulation in 10 patients with essential tremor and 8 matched healthy subjects. A round stimulating coil was placed over the vertex and electromyographic activity was recorded from the first dorsal interosseous muscle. Paired transcranial stimuli were delivered at interstimulus intervals of 3, 5, 20, 100, 150, and 200 ms.
ROMEO S, BERARDELLI, Alfredo, PEDACE F, INGHILLERI, Maurizio, GIOVANNELLI M, MANFREDI, Mario   +5 more
openaire   +3 more sources

Abnormal cortical motor excitability in dystonia

Neurology, 1996
To assess the excitability of the motor system, we studied 11 patients with task-specific dystonia and 11 age-matched normal subjects. The dominant side was affected in nine of the patients. We delivered transcranial magnetic stimuli at different stimulus intensities and with different levels of muscle facilitation to the side contralateral to the side
K, Ikoma, A, Samii, B, Mercuri, E M, Wassermann, M, Hallett   +4 more
openaire   +2 more sources

Lithium modulates cortical excitability in vitro

Brain Research, 2010
The sometimes devastating mood swings of bipolar disorder are prevented by treatment with selected antiepileptic drugs, or with lithium. Abnormal membrane ion channel expression and excitability in brain neurons likely underlie bipolar disorder, but explaining therapeutic effects in these terms has faced an unresolved paradox: the antiepileptic drugs ...
Charlotte, Butler-Munro, Emma J, Coddington, Cristina H, Shirley, Philip M, Heyward   +3 more
openaire   +2 more sources

Increased cortical excitability in human deception

NeuroReport, 2003
Deception is a cognitive process in humans and animals which is not well understood. Most studies on lie detection have focused on emotional components associated with deception. We employed transcranial magnetic stimulation of the motor cortex in conjunction with a constrained question answer protocol for the first time to show increased cortical ...
Lo Y.L., Fook-Chong S., Tan E.K.
openaire   +2 more sources

Cortical excitability in Duchenne muscular dystrophy

Clinical Neurophysiology, 2008
To investigate the probable cortical excitability changes in DMD by electrophysiological means.Sixteen cases with DMD, 10 age-matched control children (CC) and 10 healthy adult volunteers (AC) were studied with a transcranial magnetic stimulation (TMS) test battery composed of central conduction time, cortical silent period and paired TMS paradigm ...
V, Yayla, A E, Oge, F, Deymeer, H, Gurvit, S, Akca-Kalem, Y, Parman, P, Oflazer   +6 more
openaire   +2 more sources

Menstrual cycle effects on cortical excitability

Neurology, 1999
To determine whether there are menstrual cycle-related effects on cortical excitability in normal women.Ovarian steroid hormones affect neurotransmission in the brain. Data from animal experiments have shown that progesterone metabolites enhance the action of gamma-aminobutyric acid (GABA), the main inhibitory neurotransmitter in the cortex, producing ...
M J, Smith, J C, Keel, B D, Greenberg, L F, Adams, P J, Schmidt, D A, Rubinow, E M, Wassermann   +6 more
openaire   +2 more sources

Gravitational Stress: Changes in Cortical Excitability

Science, 1964
Evoked responses, recorded from the visual cortex, are enhanced during positive (head to tail) acceleration, and during cerebral hypotension induced by hemorrhage. The phenomenon observed during positive acceleration may therefore be due, at least in part, to its hypotensive effect, but the increased somatic stimulation must also be considered.
openaire   +2 more sources

Alteration of cortical excitability in patients with fibromyalgia

Pain, 2010
We assessed cortical excitability and intracortical modulation systematically, by transcranial magnetic stimulation (TMS) of the motor cortex, in patients with fibromyalgia. In total 46 female patients with fibromyalgia and 21 normal female subjects, matched for age, were included in this study.
Alaa, Mhalla, Daniel Ciampi, de Andrade, Sophie, Baudic, Serge, Perrot, Didier, Bouhassira   +4 more
openaire   +2 more sources

Effects of phenytoin on cortical excitability in humans

Neurology, 1997
We studied the effects of a loading dose of phenytoin on motor cortex excitability in five healthy volunteers. Phenytoin elevated motor thresholds to transcranial magnetic stimulation (TMS) in all subjects, but had no effects on motor-evoked potential amplitudes, silent period durations, and intracortical excitability tested by paired TMS during rest ...
R, Chen, A, Samii, M, Caños, E M, Wassermann, M, Hallett   +4 more
openaire   +2 more sources

Cortical Excitability in Migraine and Epilepsy

Journal of Clinical Neurophysiology, 2012
There is evidence for comorbidity of migraine and epilepsy. We used transcranial magnetic stimulation (TMS) to assess cortical excitability in migraine compared with control subjects and patients with epilepsy.Twenty-six patients drug-naive patients with newly diagnosed migraine were studied.
Radwa A B, Badawy, Graeme D, Jackson
openaire   +2 more sources