sylvian fissure

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syl·vi·an fissure

The deepest and most conspicuous of the cortical fissures of the brain, extending between the frontal and temporal lobes, then back and slightly upward over the lateral aspect of the cerebral hemisphere. Also called fissure of Sylvius, lateral sulcus.

[After Franciscus Sylvius (1614-1672), German-born Dutch physician and anatomist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Sylvian fissure - the deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheres
sulcus - (anatomy) any of the narrow grooves in an organ or tissue especially those that mark the convolutions on the surface of the brain
cerebrum - anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans
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References in periodicals archive ?
We believe that the cause of extensive PTBE was a long-term compression of the tumor on the major veins of the Sylvian fissure which obstructed the normal venous drainage.
In the analysis results, delayed enhancement was observed at the extraparenchymal subarachnoid space (foramen magnum, pontine cistern, Sylvian fissure) in patients with INPH.
MR GRE Sequences and CT Brain plain images show sub arachnoid haemorrhage in right sylvian fissure, right basal cistern, interhemispheric fissure, inter peduncular cistern & prepontine cistern.
Biopsy of the brain surface and leptomeninges was performed on the left frontal cortex and sylvian fissure proceeded by a small frontotemporal craniotomy.
Computed tomography (CT) disclosed intraparenchymal hemorrhage with 2 cm diameter in the right frontal lobe (Figure 3(a)) and a fluid-attenuated inversion recovery (FLARE) image obtained by magnetic resonance imaging (MRI) disclosed subarachnoid hemorrhage at the right Sylvian fissure (Figure 3(b)).
Centering on the sphenoid ridge, cut open the dura flap and retract it forward to expose the Sylvian fissure. Usually, the frontal and temporal lobes are exposed 1:1, and this ratio may be adjusted according to surgery needs by moving up or down of the incision location, thus the location of the burr hole and the exposure area of the frontal and temporal lobes.
Hypertensive putaminal hemorrhages (HPHs), the most common location of spontaneous intracerebral hemorrhages (ICHs), often result in severe morbidity and high mortality rate.[sup][1] Although the role of surgery in treating spontaneous ICH is controversial, early surgery is beneficial in some selected subgroups.[sup][2] Among different surgical modalities for hematoma removal, transsylvian-transinsular (TS-TI) approach is surprising because of good functional prognosis as compared with transcortical approach.[sup][3],[4],[5] The clinical benefit of TS-TI approach is attributed to shorter intracerebral distance and minimal brain damage using Sylvian fissure as nature pathway to reach the insular cortex.
Primary auditory cortex lies in Heschl gyri, on posterosuperior aspect of temporal lobe deep within the Sylvian fissure, that is, areas 41 and 42.
Examinations were assigned a qualitative score from 0 to III to reflect the degree of arterial vessel contribution: 0, no hypointense arterial vessel contribution within the Sylvian fissure; I, few arterial vessels in the anterior Sylvian fissure; II, arterial vessels extending through to the posterior temporal lobe; and III, multiple tertiary arterial branches in the Sylvian fissure.
A computed tomography (CT) scan of the head revealed atrophy of the left cerebral hemisphere with dilatation of the ipsilateral ventricle and widening of the sulci and Sylvian fissure of the left side.
Eponymously named after the French surgeon Charles Labbe, the vein of Labbe (inferior anastomotic vein) crosses the temporal lobe between the Sylvian fissure and the transverse sinus and connects the superficial middle cerebral vein and the transverse sinus.