Search results for "CoV"
showing 10 items of 9749 documents
Accommodative stimulus-response curves to low-pass filtered natural images
2018
To assess how the monocular steady-state accommodative stimulus-response curve is modified when viewing low-pass filtered natural images. Eighteen adult subjects participated in the study. The accommodative stimulus-response curve was objectively assessed by means of a Hartmann-Shack wavefront sensor. Measurements were taken at different accommodative demands. Target images were low-pass filtered versions of a natural image that were obtained applying different digital spatial filters that limited the spatial frequency content of the natural image. Cutoff spatial frequencies were set at 30, 21, and 15 cycles per degree (cy/deg). Mean data obtained for each target were fitted to linear model…
A case of agammaglobulinemia characterized by a defect of B-lymphocyte-differentiation to plasma cells
1974
Humoral and cell-mediated immune reactions of a 36-year old patient with a late onset of an agammaglobulinaemia and of his immediate relatives have been investigated. The immunoglobulins gamma-G, gamma-A, gamma-M, gamma-E and gamma-D, and plasma cells in the bone marrow could not be detected in the patient's serum. Immune reactions with PPD and tetanus toxoid as well as the stimulation of the lymphocytes with PHA indicate that the T-cell system was intact. The examination of the peripheral blood lymphocytes by immunofluorescence techniques gave a normal number of B-lymphocytes. These findings could be corroborated by the results of lymphocyte stimulations with anti-IgG. The data suggest tha…
Worry about COVID-19 contagion and general anxiety: Moderation and mediation effects of cognitive emotion regulation
2021
The global pandemic caused by coronavirus disease 2019 (COVID-19) occasioned that most of the population in Spain was confined to home to reduce the risk of contagion. This affected mental health, increasing anxiety and worry about COVID-19 contagion. The aim of this study was assessing the moderation and mediation effect of cognitive emotion regulation strategies (CERS) on general anxiety and whether the mediation effect was moderated by gender and/or age. A total of 1753 Spanish adults (78,6% female; M = 40.4 years, SD = 12.9) participated in an online survey that was available from March 26 to April 25 (2020) during the time period in which the population in Spain was confined. Participa…
Integration of cognitive allocentric information in visuospatial short-term memory through the hippocampus
2005
Visuospatial short-term memory relies on a widely distributed neocortical network: some areas support the encoding process of the visually acquired spatial information, whereas other ares are more involved in the active maintenance of the encoded information. Recently, in a pointing to remembered targets task, it has been shown in healthy subjects that, for memory delays of 5 s, spatial errors are affected also by cognitive allocentric information, i.e., covert spatial information derived from a pure mental representation. We tested the effect of a lesion of the hippocampus on the accuracy of pointing movements toward remembered targets, with memory delays falling in the 0.5-30 s range. The…
Diagnostic significance of SARS-CoV-2 IgM positive/IgG negative antibody profile in symptomatic patients with suspected COVID-19 testing negative by …
2020
An outbreak of new coronavirus SARS-CoV-2 was occurred in Wuhan, China and rapidly spread to other cities and nations. The standard diagnostic approach that widely adopted in the clinic is nucleic acid detection by real-time RT-PCR. However, the false-negative rate of the technique is unneglectable and serological methods are urgently warranted. Here, we presented the colloidal gold-based immunochromatographic (ICG) strip targeting viral IgM or IgG antibody and compared it with real-time RT-PCR. The sensitivity of ICG assay with IgM and IgG combinatorial detection in nucleic acid confirmed cases were 11.1%, 92.9% and 96.8% at the early stage (1-7 days after onset), intermediate stage (8-14 …
Giant olfactory groove meningiomas: extent of frontal lobes damage and long-term outcome after the pterional approach.
2010
The treatment of giant olfactory groove meningiomas (OGMs; maximum diameter ≥ 6 cm) poses special problems and represents a surgical challenge. We discuss the long-term results in a series of 18 patients with giant OGMs and report our experience on a global strategy encompassing the pterional approach to manage the lesion and an extended transbasal approach to treat recurrences.Between February 1991 and December 2007, 18 patients with giant OGMs were surgically managed via a pterional craniotomy. Postoperative follow-up imaging was obtained at one, six, and 12 months and then yearly. In preoperative images, data from tumor volume were assessed. The volume of the residual right frontal poren…
Being mindful at work and at home
2020
Although previous research on mindfulness predominantly focused on benefits of mindfulness, this study investigates quantitative and emotional demands as contextual antecedents of mindful awareness and acceptance both in the work and home domains. In addition, we examine goal attainment and satisfaction in the work and home domains as consequences of mindful awareness and acceptance. Results of a diary study across 5 workdays with 2 daily measurement occasions among 233 employees revealed that both in the work and home domains, quantitative demands were positively associated with awareness, but not with acceptance, whereas emotional demands were positively associated with acceptance, but no…
Metabolic connectivity as index of verbal working memory
2015
Positron emission tomography (PET) data are commonly analyzed in terms of regional intensity, while covariant information is not taken into account. Here, we searched for network correlates of healthy cognitive function in resting state PET data. PET with [18F]-fluorodeoxyglucose and a test of verbal working memory (WM) were administered to 35 young healthy adults. Metabolic connectivity was modeled at a group level using sparse inverse covariance estimation. Among 13 WM-relevant Brodmann areas (BAs), 6 appeared to be robustly connected. Connectivity within this network was significantly stronger in subjects with above-median WM performance. In respect to regional intensity, i.e., metaboli…
Influence of state anxiety and trate anxiety in postoperative in oral surgery
2014
Introduction: The aim of this article was to study the influence of anxiety (both state and trait) in postoperative recovery after extraction of third molar together, to establish the role of each of the aspects of anxiety in the results you obtained in an independent and complementary way. Material and Methods: We performed a prospective study of a consecutive series of 88 patients who underwent lower third molar extractions. Before being provided with any information about the operation, patients were asked to complete the Spielberger State-Trait Anxiety Inventory-Trait and State. We have evaluated postoperative swelling and pain, patients completed a 10-point visual analog scale (VAS) at…
Impaired control of an action after supplementary motor area lesion: A case study
2000
The kinematics of the action formed by reaching-grasping an object and placing it on a second target was studied in a patient who suffered from an acute vascular left brain lesion, which affected the Supplementary Motor Area proper (SMA-proper) (Matelli M, Luppino G. Thalamic input to mesial and superior area 6 in the macaque monkey. Journal of Comparative Neurology 1996;372:59-87, Matelli M, Luppino G, Fogassi L, Rizzolatti G. Thalamic input to inferior area 6 and area 4 in the macaque monkey. Journal of Comparative Neurology 1989;280:468-488), and in five healthy control subjects. The reach kinematics of the controls was affected by the positions of both the reaching-grasping and the plac…