sylvian fissureの十分な剝離は，未破裂脳動脈瘤を安全かつ確実にclipするために必要不可欠である．われわれは，特に吸引管による脳のretractionを意識しながらsylvian fissureの剝離を行っており，その方法を報告する．吸引管を脳のretractorとして使用する際にretractionする吸引管の強さ（tension）と方向（direction），つまりベクトル（vector）を意識することが重要である．吸引管を用いて脳を適切な強さ（tension）と方向（direction）〔適切なベクトル（vector）〕で圧排することにより，くも膜や微細な血管の視認性が高まりくも膜の切離を容易にすると同時に，脳圧排による挫傷や血管損傷を最小限にすることができる．sylvian fissureの十分な剝離は広い術野をつくり出し，結果的にclipping操作も行いやす...

Arachnoid cysts are benign developmental cysts that occur throughout the cerebrospinal axis in relation to the arachnoid membrane and the subarachnoid space(l). Intracranial arachnoid cysts usually occur in close proximity to arachnoid cisterns, most often in the sylvian fissure(2) and they become symptomatic in early childhood(3). We report an interhemispheric arachnoid cyst associated with ag...

A Japanese boy aged 7 years with Bainbridge-Ropers syndrome (BRPS) had a prominent domed forehead without metric ridge, mild prominence of the Sylvian fissure with bitemporal hollowing, and a heterozygous de novo novel variant "p.P1010Lfs*14" in ASXL3 gene in addition to typical findings of BRPS.

THERE are but few accounts of the study of the cortical distribution of the auditory radiation by means of lesions of the medial geniculate body. Apart from clinico-pathological studies in man, most of the investigations have been made by means of cortical stimulation and ablation. In man and the monkeys there is general agreement that the auditory radiation ends in the superior temporal gyrus ...

The location of the human nociceptive area(s) near the Sylvian fissure is still controversial in spite of evidence from imaging and evoked potential studies that noxious heat stimuli activate somatosensory areas in that region. Some studies have suggested the secondary somatosensory cortex (SII) on the upper bank of the Sylvian fissure posterior to the central sulcus, others the anterior insula...

PURPOSE The purpose of this study was to introduce a method of using three-dimensional (3D) curved-multiplanar reconstruction (MPR) images for sylvian dissection during microsurgical treatment of middle cerebral artery (MCA) aneurysms. MATERIALS AND METHODS Forty-nine patients who had undergone surgery for MCA aneurysms were enrolled. We obtained the 3D curved-MPR images along the sphenoid ri...

Reversal or reduction of normal structural cerebral asymmetries may be related to the pathogenesis of schizophrenia, but this relationship remains controversial. We review the literature and describe a further study designed to detect whether anomalous asymmetries are present early in the illness (at the first episode), whether they predict deficits in language processing, and whether they may ...

Pediatric meningeal tumors are rare, but those in the region of the sylvian fissure without dural attachment are extremely rare, with only 24 previously reported cases in the world literature. In this series, we report two additional cases of sylvian fissure meningioma without dural attachment and one case of perisylvian meningioangiomatosis in the medial temporal lobe. All three patients prese...

Convergence of visual motion information (optic flow) and vestibular signals is important for self-motion perception, and such convergence has been observed in the dorsal medial superior temporal (MSTd) and ventral intraparietal areas. In contrast, the parieto-insular vestibular cortex (PIVC), a cortical vestibular area in the sylvian fissure, is not responsive to optic flow. Here, we explore o...

A 48-year-old man presented with signs of pseudobulbar palsy. On computed tomography (CT) he was found to have extensive tissue loss in the region of the sylvian fissure and insula bilaterally. This appearance on CT represents the radiological correlate to anatomic descriptions of the operculum syndrome, and is useful in distinguishing the condition from pseudobulbar palsy.