Babinski reflex by sural stimulation and dysfunction of descending motor pathway.

The aim of the study was to find out the relationship between the Babinski reflex and flexor polysynaptic reflexes which was evaluated by sural nerve stimulation, and to evaluate the descending motor pathway in involvement by cervical and transcortical cranial stimulation (TCCS) in a group of patients that were diagnosed as having the Babinski sign with either hemiparetic of hemiplegic, due to a cerebrovascular accident. In the normal population no significant responses were seen from the EHL by sural stimulation and these responses were recorded from the BF with a latency of 88 msec. In the patients who had Babinski reflex responses, signs could be easily recorded from EHL by sural stimulation with a latency of 166 msec.

Persistent primitive proatlantal intersegmental artery (proatlantal artery I) results in 'top of the basilar' syndrome.

Background: Persistent primitive proatlantal intersegmental artery (proatlantal artery I) is an anastomotic channel between the carotid and vertebrobasilar arterial systems. Persistence of this embryonic anastomosis is very rare. The "top of the basilar" syndrome is usually due to occlusion of thalamoperforating arteries by emboli that rise from the vertebrobasilar arterial system.