Phylogenetic Relationships of Japanese Auritibicen Species (Hemiptera: Cicadidae: Cryptotympanini) Inferred from Mitochondrial and Nuclear Gene Sequences.

We investigated the phylogenetic relationships and divergence times within the genus Auritibicen(Cicadidae: Cicadinae: Cryptotympanini), analyzing five Japanese species (A. japonicus, A. bihamatus,A.

Color-weak compensation using local affine isometry based on discrimination threshold matching.

We develop algorithms for color-weak compensation and color-weak simulation based on Riemannian geometry models of color spaces. The objective function introduced measures the match of color discrimination thresholds of average normal observers and a color-weak observer. The developed matching process makes use of local affine maps between color spaces of color-normal and color-weak observers.

Validation of Echo-Dynamography by virtual color doppler echocardiography generated from phase contrast magnetic resonance angiography datasets.

Echo-Dynamography (EDG) is a smart visualization technique in echocardiography in which two-dimensional distribution of blood flow vectors in cardiovascular system is deduced by applying fluid dynamics theories into Doppler velocity datasets. Previous validation studies such as numerical simulation of free jet model or model circulation were too simple to reproduce unstable and asymmetrical flow in left ventricle. In the present study, virtual color Doppler echocardiography is generated from PC-MRA (phase contrast magnetic resonance angiography) datasets.

Evaluation of vortex flow in left ventricle by echo-dynamography and phase contrast magnetic resonance angiography.

Echo-dynamography (EDG) is a method for visualizing left ventricular (LV) blood flow based on cardiac Doppler measurement in which blood flow component perpendicular to the ultrasonic beam is deduced by applying fluid dynamics theories to two-dimensional (2D) distribution of blood flow component along the ultrasonic beam. EDG has been validated by numerical simulation and particle image velocimetry of model circulation. However, these validations were too simple to reproduce unstable and asymmetrical flow in a beating heart.

Selective laminoplasty after the preoperative diagnosis of the responsible level using spinal cord evoked potentials in elderly patients with cervical spondylotic myelopathy: a preliminary report.

Study Design: A preliminary report of a new operative method termed selective laminoplasty after the preoperative diagnosis of the responsible level using spinal cord evoked potentials (SCEPs) in elderly patients with cervical spondylotic myelopathy.

Objective: To introduce the method and clinical results for selective laminoplasty.

Summary Of Background Data: Clinical results for conventional laminoplasty and anterior decompression and fusion guided by SCEPs have been reported.

Dynamic electrophysiological examination of cervical flexion myelopathy.

Cervical flexion myelopathy is thought to arise following compression of the spinal cord by vertebrae or intervertebral discs and dura mater, or from overstretching of the spinal cord induced by cervical spinal flexion. However, the influence of spinal flexion on the spinal cord and the detailed origins of this disease are unknown. In this article the authors report a case of cervical flexion myelopathy in which dynamic electrophysiological examination was performed using an epidural electrode.

Biomechanical study of cervical flexion myelopathy using a three-dimensional finite element method.

Object: The goal of this study was to perform a biomechanical study of cervical flexion myelopathy (CFM) using a finite element method.

Methods: A 3D finite element model of the spinal cord was established consisting of gray matter, white matter, and pia mater. After the application of semi-static compression, the model underwent anterior flexion to simulate CFM.

Cervical hemilaminoplasty: technical note.

Ten patients with cervical spinal schwannomas were operated using a new posterior approach, termed cervical hemilaminoplasty. A thread wire saw (T-saw) was used to cut the lamina at the center of the spinous process and at the unilateral pars interarticularis on the affected side. The unilateral lamina, the inferior articular process, and half of the spinous process were resected as a single mass.

Peripheral neuropathies associated with rheumatoid synovial cysts of the elbow joint: three case reports.

We present 3 cases with peripheral neuropathies of the median, posterior interosseous, and ulnar nerves associated with rheumatoid synovial cysts of the elbow joint. Magnetic resonance imaging and electrophysiological examination led to the final diagnosis of the relation to synovial cysts of the elbow joint. All patients underwent surgical decompression of these nerves and synovectomy of the elbow joint.

Intraoperative electrophysiologic studies on the functions of nerve roots involved in cervical dumbbell-shaped schwannoma and their clinical utility.

Background: It is difficult to expect the degree of neurologic deficits after resection of involved nerve roots before and during the surgery for cervical dumbbell-shaped schwannoma. We present the results of studies for cervical nerve root functions in patients with cervical schwannoma using intraoperative electrophysiologic assessment and the potential of their clinical relevance is also discussed.

Objective: To present the utility of intraoperative electrophysiologic studies to detect the functions of the nerve roots involved in cervical schwannoma and adjacent nerve roots.

Investigation of motor dominant C5 paralysis after laminoplasty from the results of evoked spinal cord responses.

Background: Postoperative motor dominant C5 paralysis was known as one of several complications after laminoplasty. Several theories have been proposed for postoperative segmental paralysis after laminoplasty, but its etiology remains unclear.

Objective: To investigate the possible mechanism for postoperative motor dominant C5 paralysis from intraoperative electrophysiological studies using evoked spinal cord potentials (ESCPs).

Epidurally recorded spinal cord evoked potentials in patients with cervical myelopathy and normal central motor conduction time measured by transcranial magnetic stimulation.

Objective: Use epidural recording of evoked spinal cord potentials (ESCPs) to investigate the pathology of cervical spondylotic myelopathy (CSM) in patients with normal central motor conduction time (CMCT) in upper and lower limbs.

Methods: A total of 75 patients with CSM were studied. All patients were examined before surgery for motor evoked potentials (MEPs) following transcranial magnetic stimulation (TMS).