To assess whether intraoperative subcortical mapping of the visual pathways during brain surgeries was feasible. Subcortico-cortical evoked potentials (SCEPs: 30 stimulations/site, biphasic single pulse, 1.3 Hz, 0.2 ms/phase, maximum 10 mA; bipolar probe) were measured in 12 patients for stimulation optic radiation, Meyer’s loop or nerve. Recorded sites bilateral central, parietal, parieto-occi...

Although random aortic pressure (AOP) perturbation according to a binary white noise sequence enables us to estimate open-loop dynamic characteristics of the carotid sinus baroreflex under closed-loop conditions, the necessity of arterial catheter implantation limits the applicability of this method in freely moving animal experiments. Thus, we explored a closed-loop system identification metho...

Digital neural loops were identified over a century ago and are common findings in cadaveric studies of palmar and digital anatomy. Symptomatic digital neural loops are rare. We report a case of hemidigital anesthesia resulting from a proper digital nerve neural loop penetrated by its common digital artery in the palm. After neurolysis of the median nerve and the common and proper digital nerve...

BACKGROUND AND PURPOSE Tinnitus is a common disorder, and the etiology remains mostly unclear. The purpose of this study was to investigate the causative effect of the vascular loop and compression of the vestibulocochlear nerve at the cerebellopontine angle in patients with unexplained tinnitus. MATERIALS AND METHODS This study was approved by our institutional review board. Written informed...

variations in the origin of axillary artery branches are common. but, distinctly abnormal course of its posterior circumflex humeral branch is rare. we are reporting a case of posterior circumflex humeral artery (pcha) originating from the axillary artery, passing through lower triangular space to reach the scapular region where it accompanied the axillary nerve and posterior circumflex humeral...

BACKGROUND Medical management of short-lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT) syndrome and short-lasting unilateral neuralgiform headache attacks with cranial autonomic symptoms (SUNA) is often unsatisfactory. METHODS The authors report nine cases of SUNCT/SUNA that failed medical treatment and had an aberrant arterial loop either in contact w...

Considerable interest has developed in otology concerning the relationship between the vascular loop and compression of the eighth nerve, producing vertigo. Several authors have described the radiographic findings relative to the anatomy of these vascular loops. Few previous articles have dealt with cases that have had surgical confirmation or repair of the defect. Our presentation concerns 27 ...