(1) The number of axons displaying peptide-like immunoreactivity within the optic nerve, retinal or cerebral to the crush, and within the optic chiasm gradually decreased after 2-3 months.
(2) Optic chiasm transection drastically diminished this ability, callosal section had little effect and combined lesions of these two structures abolished stereoperception.
(3) Two patients with sphenoethmoid mucoceles developed visual field defects consistent with optic chiasm dysfunction.
(4) We studied a family in which the proband had an acute chiasmal syndrome secondary to a cavernous angioma of the optic nerve and chiasm.
(5) We describe a case of ganglioglioma of the optic chiasm and tract in a 33-year-old man.
(6) Since such rats supposedly have a normal pigment distribution and a normal pattern of decussation at the optic chiasm, this finding appears to undermine the suggested role played by stalk melanin in establishing the laterality of retinal fibre projections in other mammalian species.
(7) In addition to a severe disorganization of the inner optic chiasm irreC mutants display a subtle phenotype in the outer optic chiasm, in which some bundles of axons that leave the posterior equatorial part of the lamina on their way to the anterior medulla take a long detour before eventually finding their specific targets in the medulla neuropile.
(8) Such fibers were observed to leave the posterior medial portion of the optic chiasm and, after arching dorsally, to project into the posterior fifth of the suprachiasmatic nucleus (SCN), as well as into the rostral part of the arcuate nucleus.
(9) There was no fascicular organisation at the point at which the two nerves fused at the chiasm.
(10) Following microneurosurgical decompression of the optic nerves and chiasm, prompt visual recovery occurred.
(11) We describe a young girl with neurofibromatosis and enlargement of the optic chiasm and intracranial left optic nerve.
(12) A pilocytic astrocytoma of the optic nerve, chiasm, hypothalamus, or third ventricle is a relatively common tumor of childhood.
(13) In the developing mammalian visual system, retinal fibers grow through the optic chiasm, where one population crosses to the opposite side of the brain and the other does not.
(14) Other cats that learned the same discriminations monocularly but had sustained a combined section of optic chiasm and forebrain commissures before learning showed no indication of interocular transfer.
(15) However, the mean response latency to stimulation of the optic chiasm was significantly shorter for Y cells in MIN than for Y cells in the laminated LGNd.
(16) Four of these groups may be related to four negative peaks seen in the antidromic compound action potential recorded at the margin of the cat optic disc following stimulation of the optic chiasm.
(17) Although parabrachial activation by itself had no detectable effect on Y cell response modes, prior parabrachial activation prevented the enhanced burstiness caused by chiasm stimulation.
(18) The frontal basal cisterns could not be filled sufficiently with the contrast agent due to haematoma and a prefixed chiasm accompanied by arachnoid adhesions in two cases.
(19) Similar results were found in cats and kittens that underwent only chiasm split surgery, although some recovery of callosal transfer was found in the latter.
(20) The structures of the developing eye-stalk and the relationships of early retinofugal fibers as they pass through the stalk, chiasm, and tract have been studied by light and electron microscopical methods in fetal ferrets aged 23-27 days.
Chiasmus
Definition:
(n.) An inversion of the order of words or phrases, when repeated or subsequently referred to in a sentence
Example Sentences:
(1) But doing so has never been as simple or as uncontested as his neatly balanced chiasmus implies.