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18 papers found.
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Judging time-to-passage of looming sounds: Evidence for the use of distance-based information

Perceptual judgments are an essential mechanism for our everyday interaction with other moving agents or events. For instance, estimation of the time remaining before an object contacts or passes us is essential to act upon or to avoid that object. Previous studies have demonstrated that participants use different cues to estimate the time to contact or the time to passage of...

Topographical functional connectivity patterns exist in the congenitally, prelingually deaf

Congenital deafness causes large changes in the auditory cortex structure and function, such that without early childhood cochlear-implant, profoundly deaf children do not develop intact, high-level, auditory functions. But how is auditory cortex organization affected by congenital, prelingual, and long standing deafness? Does the large-scale topographical organization of the...

Model Specification and the Reliability of fMRI Results: Implications for Longitudinal Neuroimaging Studies in Psychiatry

Functional Magnetic Resonance Imagine (fMRI) is an important assessment tool in longitudinal studies of mental illness and its treatment. Understanding the psychometric properties of fMRI-based metrics, and the factors that influence them, will be critical for properly interpreting the results of these efforts. The current study examined whether the choice among alternative model...

A right visual field advantage for visual processing of manipulable objects

Information about object-associated manipulations is lateralized to left parietal regions, while information about the visual form of tools is represented bilaterally in ventral occipito-temporal cortex. It is unknown how lateralization of motor-relevant information in left-hemisphere dorsal stream regions may affect the visual processing of manipulable objects. We used a...

Affect of the unconscious: Visually suppressed angry faces modulate our decisions

Emotional and affective processing imposes itself over cognitive processes and modulates our perception of the surrounding environment. In two experiments, we addressed the issue of whether nonconscious processing of affect can take place even under deep states of unawareness, such as those induced by interocular suppression techniques, and can elicit an affective response that...

A potential source for cellulolytic enzyme discovery and environmental aspects revealed through metagenomics of Brazilian mangroves

The mangroves are among the most productive and biologically important environments. The possible presence of cellulolytic enzymes and microorganisms useful for biomass degradation as well as taxonomic and functional aspects of two Brazilian mangroves were evaluated using cultivation and metagenomic approaches. From a total of 296 microorganisms with visual differences in colony...

Early Diagnosis of Nonaneurysmal Infectious Thoracic Aortitis Using Transesophageal Echocardiogram in a Patient with Purulent Meningitis

Infectious thoracic aortitis is a rare entity in the antibiotic era and usually appears in patients with prior aortic disease and/or associated infective endocarditis. Infected nonaneurysmal aorta will likely progress to mycotic aneurysm if left untreated. In most of the reports, infectious thoracic aortitis presents with a mycotic aneurysm. We report the case of a patient with a...

Early Diagnosis of Nonaneurysmal Infectious Thoracic Aortitis Using Transesophageal Echocardiogram in a Patient with Purulent Meningitis

Infectious thoracic aortitis is a rare entity in the antibiotic era and usually appears in patients with prior aortic disease and/or associated infective endocarditis. Infected nonaneurysmal aorta will likely progress to mycotic aneurysm if left untreated. In most of the reports, infectious thoracic aortitis presents with a mycotic aneurysm. We report the case of a patient with a...

The locus of the frequency effect in picture naming: When recognizing is not enough

The lexical frequency effect in picture naming is generally assumed to constitute a signature of lexical access. Lexical frequency, however, is correlated with other variables, like concept familiarity, that can produce effects similar to those of lexical frequency in picture naming tasks. In this study, a delayed picture naming task was employed to address the hypothesis that...

Coronary artery spasm following aortic valve replacement

The authors present a clinical case of coronary artery spasm in a 62-year-old woman undergoing elective aortic valve replacement surgery for aortic regurgitation. On admission at ICU, the patient developed marked hemodynamic and electrical instability. Emergent coronary angiography demonstrated a pronounced spasm of the distal portion of the right coronary artery, apparently...

Haemolytic anaemia secondary to arsenic poisoning: a case report

We report the case of a 56-year-old white man who presented at the Emergency Department for evaluation of dark-red urine. Rapid development of acute renal failure and haemolytic anaemia initially elicited the hypothesis of a haemolytic-uremic syndrome. A previous exposure to a gas mixture containing arsenic and copper was later recognized as the probable aetiology while other...

Massive right atrial myxoma presenting as syncope and exertional dyspnea: case report

Primary heart neoplasms are rare occurring with an estimated incidence of 0.0017-0.19%. Myxoma is the most prevalent primary heart tumor. The right atrium is an unusual localization, occurring only in 15-20% of myxoma cases. We report a rare case of a massive right atrial myxoma causing tricuspid valve obstruction and presenting as syncope and exertional dyspnea. This case...

Stuck leaflet of bileaflet prosthesis in mitral position – five cases to make us think

Jorge Almeida Albino Santos Fernando Barreiros Mota Garcia Paulo Pinho Objective: We present five cases of mitral bileaflet prosthesis dysfunction as a result of a stuck leaflet in closed position

Use of Verapamil in Chronic Hypertensive Pregnant Women: flow Analysis of Uterine Arteries and Umbilical Artery

Purpose: this study, using verapamil, a slow calcium channel blocker, was a randomized, clinical, double blind and placebo controlled trial, whose objective was to observe if there was a uteroplacental and fetoplacental flow variation during its chronic oral use. Methods: 123 patients were accompanied: study group (n = 61), submitted to verapamil 240 mg/day and control group (n...

The ENIGMA Consortium: large-scale collaborative analyses of neuroimaging and genetic data

The Enhancing NeuroImaging Genetics through Meta-Analysis (ENIGMA) Consortium is a collaborative network of researchers working together on a range of large-scale studies that integrate data from 70 institutions worldwide. Organized into Working Groups that tackle questions in neuroscience, genetics, and medicine, ENIGMA studies have analyzed neuroimaging data from over 12,826...