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Absence of collateral function due to hypoplasia or stenosis of collateral arteries may lead to a higher risk of stroke in patients with severe internal carotid artery occlusive disease
Posterior circulation of the brain consists of 2 vertebral arteries, 1 basilar artery, 2 posterior cerebral arteries and their branches.
Anterior circulation of the brain comprises of internal carotid artery and its branches.
20 minutes of artifact-free recording of epileptiform activity that consists of synchronized depolarization and repolarization of thalamic and cortical neurons. 20-electrode placement system along with bipolar and referential montages allows comparison of epileptiform activity on both sides of the brain as well as localization of seizure. Many provocative techniques such as hyperventilation, intermittent photic stimulation, and sleep are used to produce epileptiform waves.
Here we review popular digital tools for Neurologists: Digital Resources, Browser extensions and mobile apps.
Here we provide a list of books and resources that should be first and essential reading for all Neurologists
During cerebral autoregulation, optimal perfusion pressure is maintained by changes in Cerebrovascular resistance. CBF is kept relatively constant through the change in vessel diameter at the CPP range of 40-140 mmHg. It is controlled by means of myogenic, metabolic, and neurogenic factors, and partial pressure of arterial blood gases (CO2 and O2), cerebral metabolism, and the autonomic nervous system are primary determinants of CBF.