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Menstrual cycle effects on cortical excitability
Neurology, 1999To 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 +6 more
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Cortical Excitability Changes Following Transcallosal Afferent Excitation
1971In cats anesthetized with sodium pentobarbital, it has been found that stimulation of the corpus callosum or the contralateral homotopic point has an inhibitory effect on potentials evoked by tone bursts in the auditory area of the cortex [1]. In results obtained from the “encephale isole” preparation, however, there was additionally a facilitatory ...
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Lithium modulates cortical excitability in vitro
Brain Research, 2010The 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 +3 more
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Cortical excitability and post-stroke recovery
Biochemical Society Transactions, 2009Stroke is the leading cause of adult disability. Recent studies show that the brain can engage in a limited process of neural repair after stroke: re-mapping of sensory and motor function and sprouting of new connections in peri-infarct cortex surrounding the stroke.
Andrew N, Clarkson, S Tomas, Carmichael
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Altered cortical excitability in anorexia nervosa
Neurophysiologie Clinique/Clinical Neurophysiology, 2014Recent EEG and positron emission tomography (PET) studies have reported hyperactivation of the right hemisphere in anorexia nervosa (AN). The aim of the present study was to test this notion by examining cortical excitability in subjects with AN using transcranial magnetic stimulation (TMS).We investigated thirteen patients meeting the DSM IV ...
E.M. Khedr +4 more
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Increased cortical excitability in human deception
NeuroReport, 2003Deception 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.
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Cortical excitability after myoclonus
Neurology, 1985Cortical excitability after myoclonus was investigated by electrically stimulating the median nerve just at the time of, or at intervals after, the onset of myoclonus and by averaging the EEG and EMG, using the myoclonus onset pulse as a trigger (jerk-locked somatosensory evoked potential technique).
H, Shibasaki, R, Neshige, Y, Hashiba
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Gravitational Stress: Changes in Cortical Excitability
Science, 1964Evoked 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.
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Chiropractic, Cortical Excitability and BCI
2014Utilizing transcranial magnetic stimulation (TMS) protocols prior to and after spinal manipulation, alterations in the activity within specific intracortical facilitatory and intracortical inhibitory pathways have been observed to an upper limb muscle (abductor pollicis brevis; APB).
Imran Khan Niazi +5 more
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