The electronic motions associated with spectral transitions at photon frequencies ~ 1015 Hz are more difficult to picture in classical terms than the vibrational--internal--motion of a molecule, or rotational--external--motion about an axis within the molecule; a simplistic description as involving a density of electronic charge near some particular nuclei that is altered between the states involved in an electronic transition, whether or not accompanied with altered internuclear
distances in the case of molecules, might serve for that purpose.
ophthalmoplegia: unusual causes in 114 of 410 patients.
As we have already mentioned that if two hydrogen isotopes are placed with one another, their internuclear
separation reduces to 2x10-8 cm.
2] estao orientados vetorialmente em um plano perpendicular ao eixo internuclear
dos atomos A e B.
CNS complications include an MS-like picture (optic neuropathy, cerebellar ataxia, internuclear
2003) Optic Nerve Unilateral painful loss of vision Scotoma, reduced visual acuity and color vision, and relative afferent papillary defect Cerebellum and Cerebellar Pathways Tremor Postural and action tremor, dysarthria Clumsiness and poor balance Limb incoordination and gait ataxia Brainstem Diplopia, oscillopsia Nystagmus, internuclear
, and other complex ophthalmolplegias Vertigo Vestibular-evoked myogenic potentials (Alpini et al.
ii) the homo- and heteronuclear dipolar interactions, which are spatial in nature and related to the internuclear
There are revised chapters on supranuclear and internuclear
gaze pathways and headache, and there is updated material on nystagmus and related ocular oscillations.
However, the internuclear
chains can be collapsed by the removal of the solvating diluent to make the approaching nuclei become a compact mass.
Ascending and descending internuclear
projections within the trigeminal sensory nuclear complex.
ions, with internuclear
axes coincident with the c-axis, are displaced about 0.
deficits and with mass effect abnormalities; Dx: MS BAEP = Brain stem auditory evoked potential, CC = corpus callosum, CSF = cerebrospinal fluid, CT = computed tomography, DX = diagnosis, enhanc = enhancing or enhancement, ext = extension; HA = headaches, gen = generalized, HH = homonymous hemianopia, INO = internuclear
opthalmoplegia, MRI = magnetic resonance imaging, MS = multiple sclerosis, NI = normal image, OD = right eye, ON = optic neuritis, SSEP = somatosensory evoked potentials, Sx = symptoms of multiple sclerosis, VEP = visual evoked potential.