Search results for "BELLA"
showing 10 items of 388 documents
Cerebellar Contribution to Mental Rotation: a cTBS Study
2013
A cerebellar role in spatial information processing has been advanced even in the absence of physical manipulation, as occurring in mental rotation. The present study was aimed at investigating the specific involvement of left and right cerebellar hemispheres in two tasks of mental rotation. We used continuous theta burst stimulation to downregulate cerebellar hemisphere excitability in healthy adult subjects performing two mental rotation tasks: an Embodied Mental Rotation (EMR) task, entailing an egocentric strategy, and an Abstract Mental Rotation (AMR) task entailing an allocentric strategy. Following downregulation of left cerebellar hemisphere, reaction times were slower in comparison…
Functional MRI of galvanic vestibular stimulation with alternating currents at different frequencies.
2004
Abstract Functional MRI was performed in 28 healthy volunteers to study the effects of galvanic vestibular stimulation with alternating currents (AC-GVS) of different frequencies on brain activation patterns. The aims of this study were (1) to identify specific areas within the vestibular cortical network that are involved in the processing of frequency-specific aspects by correlation analyses, (2) to determine the optimal frequency for stimulation of the vestibular system with respect to perception, and (3) to analyze whether different frequencies of AC-GVS are mediated in different cortical areas or different sites within the vestibular cortex. AC-GVS was performed using sinusoidal stimul…
The internal auditory artery: (embryology, anatomy, angiography, pathology).
1975
A review of the literature on the embryology, anatomy and angiography of the internal auditory artery has shown that there may be considerable variation as to the origin and number of internal auditory arteries. The present study, based on serial magnification angiographies of the internal auditory artery, has demonstrated 7 variants of the origin of this artery although in 45.4% of cases the internal auditory artery arose from the anterior inferior cerebellar artery. For the diagnosis of pathological processes in the cerebellopontine angle (tumors, sudden deafness, vascular abnormalities) magnification angiography is of special importance. Acoustic neurinomas in particular can be diagnosed…
The impact of isolated lesions on white-matter fiber tracts in multiple sclerosis patients
2015
Infratentorial lesions have been assigned an equivalent weighting to supratentorial plaques in the new McDonald criteria for diagnosing multiple sclerosis. Moreover, their presence has been shown to have prognostic value for disability. However, their spatial distribution and impact on network damage is not well understood. As a preliminary step in this study, we mapped the overall infratentorial lesion pattern in relapsing–remitting multiple sclerosis patients (N = 317) using MRI, finding the pons (lesion density, 14.25/cm3) and peduncles (13.38/cm3) to be predilection sites for infratentorial lesions. Based on these results, 118 fiber bundles from 15 healthy controls and a subgroup of 23 …
A novel L1CAM mutation in a fetus detected by prenatal diagnosis
2010
X-linked hydrocephalus is due to mutations in the L1 neuronal cell adhesion molecule (L1CAM) gene. L1 protein plays a key role in neurite outgrowth, axonal guidance, and pathfinding during the development of the nervous system. We report on a familial case diagnosed by prenatal ultrasonographic examination, with cerebellar hypoplasia, agenesis of the corpus callosum, and the bilateral overlapping of the second and third fingers of the hand. Sequencing of the L1CAM gene showed a novel missense mutation in exon 14: transition of a guanine to cytosine at position 1777 (c.1777G > C), which led to an amino acid change of alanine to proline at position 593 (Ala593Pro) in the sixth immunoglobulin …
Somatosensory event-related potentials in the rabbit cerebral and cerebellar cortices: a correspondence with mismatch responses in humans.
2001
Somatosensory event-related potentials (ERPs) were recorded from the cerebellar (CerCx), somatosensory (SomCx) and visual (VCx) cortices in rabbits in two stimulus conditions. In the oddball condition, airpuffs to two different locations in the rabbit's muzzle corresponded to infrequently presented deviant stimuli (oddball-deviants) interspersed with frequently presented standard stimuli. In the deviant-alone condition, deviants (alone-deviants) were presented without standards. ERPs to oddball-deviants differed significantly from those to standards in CerCx and SomCx, but not in VCx. Furthermore, some of these differences were not found between ERPs to alone-deviants and those to standards…
Una iniciativa artística de los alumnos de la Escuela de Bellas Artes de San Carlos: la exposición organizada en el vestíbulo del teatro Principal de…
2004
En julio de 1882, los alumnos de la Escuela de Bellas Artes de San Carlos de Valencia organizaron una exposición artística en el vestíbulo del teatro Principal, con el objeto de destinar sus beneficios a la creación de otra de carácter permanente. Aunque la muestra fue muy visitada y resultó un éxito, el proyecto de exposición permanente, no obstante, todavía tendría que esperar algunos años para llegar a ser una realidad. (A)
Maturation of IgG avidity to individual rubella virus structural proteins.
2001
Background: the structural proteins of rubella virus, the capsid protein C and the envelope glycoproteins E1 and E2 were produced in lepidopteran insect cells using baculovirus expression vectors. The C-terminal ends of the corresponding proteins were fused to a polyhistidine tag for easy and gentle purification by metal ion affinity chromatography. Objectives: to investigate the maturation of natural and vaccinal IgG avidity against individual authentic and recombinant rubella virus (RV) structural proteins. Study design the analysis was carried out using a modified immunoblotting technique where the purified baculovirus-expressed proteins were compared with authentic rubella virus protein…
Ut pictura poesis: las ideas de Hermógenes y los cánones pictóricos en los De Oratione libri VII de Antonio Llull
1997
En este trabajo se examinan la relación entre la teoría del decoro y los estilos literarios de acuerdo a la teoría retórica de Hermógenes en los De Oratione libri VII de Antonio Llull y su relación en la concepción de los diferentes tipos e ideales pictóricos. This paper examines the relationship between the theory of decorum and literary styles according to the rhetorical theory of Hermogenes in the De Oratione libri VII by Antonio Llull and their relationship in the conception of different types and pictorial ideals.
Terracotas en Terra Sigillata Hispánica. Reflexión a partir de un nuevo ejemplar en Augusta Emerita (Mérida, Badajoz)
2017
En este trabajo abordamos el estudio en clave iconográfca, funcional y cronológica de un ejemplar de terracota elaborado en Terra Sigillata Hispánica (TSH). Éste apareció en un contexto funerario en Augusta Emerita. Se trata de una fgura de bulto redondo mutilada y que presenta la peculiaridad de estar pintada, algo no muy frecuente en el repertorio de la TSH. Aprovechamos además la ocasión para plantear una nueva hipótesis interpretativa sobre este hallazgo como representación de una deidad oriental y analizamos otros ejemplares similares producidos en las otras fglinae peninsulares