Excitability of intracortical inhibitory and facilitatory circuits during ischemic nerve block
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چکیده
منابع مشابه
Handedness and the excitability of cortical inhibitory circuits
Inhibitory processes play a significant role in the control of goal-directed actions. To increase insights into these mechanisms as a function of handedness, we measured the transient inhibition of volitional motor activity induced by single pulse transcranial magnetic stimulation during bimanual isometric contractions with symmetrical and asymmetrical force demands. Here, we assess the cortica...
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During hyperventilation apnoea in vagotomized, anaesthetized rabbits, paralyzed and artificially ventilated, the effects of electrical afferent stimulation of the vagus nerve on the provocation and inhibition of inspiratory activity were investigated. The experiments were repeated using hyperinflation or short-lasting inflation in nonvagotomized animals. It was found that the possibility of obs...
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Our previous single-pulse transcranial magnetic stimulation (TMS) study revealed that excitability in the motor cortex can be altered by conscious control of walking relative to less conscious normal walking. However, substantial elements and underlying mechanisms for inducing walking-related cortical plasticity are still unknown. Hence, in this study we aimed to examine the characteristics of ...
متن کاملThalamocortical Circuits and Excitability.
Absence seizures (3–4 Hz) and sleep spindles (6–14 Hz) occur mostly during slow-wave sleep and have been hypothesized to involve the same corticothalamic network. However, the mechanism by which this network transforms from one form of activity to the other is not well understood. Here we examine this question using ferret lateral geniculate nucleus slices and stimulation of the corticothalamic...
متن کاملChanges in intracortical excitability after transient ischemic attack are associated with ABCD² score.
BACKGROUND AND PURPOSE A transient ischemic attack (TIA) is a brief ischemic episode characterized by rapid clinical resolution and not associated with permanent cerebral infarction. Whether changes in intracortical excitability persist and are related to clinical predictors of stroke risk after TIA remains unknown. METHODS Participants were individuals with clinically resolved motor TIA with...
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ژورنال
عنوان ژورنال: Restorative Neurology and Neuroscience
سال: 2012
ISSN: 0922-6028
DOI: 10.3233/rnn-2012-110198