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https://www.readbyqxmd.com/read/28092861/a-deafening-flash-visual-interference-of-auditory-signal-detection
#1
Christopher Fassnidge, Claudia Cecconi Marcotti, Elliot Freeman
In some people, visual stimulation evokes auditory sensations. How prevalent and how perceptually real is this? 22% of our neurotypical adult participants responded 'Yes' when asked whether they heard faint sounds accompanying flash stimuli, and showed significantly better ability to discriminate visual 'Morse-code' sequences. This benefit might arise from an ability to recode visual signals as sounds, thus taking advantage of superior temporal acuity of audition. In support of this, those who showed better visual relative to auditory sequence discrimination also had poorer auditory detection in the presence of uninformative visual flashes, though this was independent of awareness of visually-evoked sounds...
January 13, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28087625/faithful-mrna-splicing-depends-on-the-prp19-complex-subunit-faint-sausage-and-is-required-for-tracheal-branching-morphogenesis-in-drosophila
#2
Julia Sauerwald, Charlotte Soneson, Mark D Robinson, Stefan Luschnig
Morphogenesis requires the dynamic regulation of gene expression, including transcription, mRNA maturation and translation. Dysfunction of the general mRNA splicing machinery can cause surprisingly specific cellular phenotypes, but the basis for these effects is not clear. Here we show that the Drosophila faint sausage (fas) locus, implicated in epithelial morphogenesis and previously reported to encode a secreted immunoglobulin domain protein, in fact encodes a subunit of the spliceosome-activating Prp19 complex, which is essential for efficient pre-mRNA splicing...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28087578/distinct-binding-of-pet-ligands-pbb3-and-av-1451-to-tau-fibril-strains-in-neurodegenerative-tauopathies
#3
Maiko Ono, Naruhiko Sahara, Katsushi Kumata, Bin Ji, Ruiqing Ni, Shunsuke Koga, Dennis W Dickson, John Q Trojanowski, Virginia M-Y Lee, Mari Yoshida, Isao Hozumi, Yasumasa Yoshiyama, John C van Swieten, Agneta Nordberg, Tetsuya Suhara, Ming-Rong Zhang, Makoto Higuchi
Diverse neurodegenerative disorders are characterized by deposition of tau fibrils composed of conformers (i.e. strains) unique to each illness. The development of tau imaging agents has enabled visualization of tau lesions in tauopathy patients, but the modes of their binding to different tau strains remain elusive. Here we compared binding of tau positron emission tomography ligands, PBB3 and AV-1451, by fluorescence, autoradiography and homogenate binding assays with homologous and heterologous blockades using tauopathy brain samples...
January 12, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28079691/lutein-and-brilliant-blue-based-dye-for-donor-preparation-and-transplantation-in-descemet-membrane-endothelial-keratoplasty
#4
Sebastian Siebelmann, Mario Matthaei, Robert Hörster, Claus Cursiefen, Björn Bachmann
PURPOSE: Trypan blue (TB) is used for visualization of the endothelium-Descemet membrane graft during Descemet membrane endothelial keratoplasty (DMEK). However, TB is assumed to have a dose-dependent toxic effect on the corneal endothelium. We retrospectively compared a lutein/zeaxanthin and Brilliant Blue (LZ/BB)-based dye for preparation and transplantation of the graft in DMEK to TB. METHODS: In 20 patients, a dye composed of 1% LZ /0.025% BB was used, and in 22 patients, 0...
January 11, 2017: Cornea
https://www.readbyqxmd.com/read/28074638/clinical-management-of-candida-albicans-keratomycosis-in-a-bottlenose-dolphin-tursiops-truncatus
#5
Claire A Simeone, John P Traversi, Jenny M Meegan, Carolina LeBert, Carmen M H Colitz, Eric D Jensen
OBJECTIVE: Corneal ulceration secondary to trauma commonly affects marine mammals, often with opportunistic secondary bacterial or fungal infections. This report characterizes the combined use of auriculopalpebral and ophthalmic nerve blocks, adipose-derived stem cells, and subconjunctival injections for successful treatment of corneal trauma and infection in dolphins. ANIMAL STUDIED: An 11-year-old, female bottlenose dolphin (Tursiops truncatus) presented with bilateral diffuse corneal opacities, which progressed to keratomycosis caused by Candida albicans...
January 11, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28069212/ultrasonic-assisted-synthesis-of-phosphorus-graphene-oxide-poly-vinyl-alcohol-polymer-and-surface-resistivity-research-of-phosphorus-graphene-oxide-poly-vinyl-alcohol-film
#6
Jihui Li, Yongshen Li, Shuai Niu, Ning Li
In this paper, phosphorus graphene oxide/poly (vinyl alcohol) polymer (PGO/PVA polymer) was synthesized by PGO and PVA via the esterification in the case of faint acidity and the ultrasound irradiation and characterized; moreover, phosphorus graphene oxide/poly (vinyl alcohol) film (PGO/PVA film) was prepared by PGO/PVA polymer and characterized; also, the surface resistivity of PGO/PVA film was investigated in the case of the different amount of PGO. Based on those, it had been found that PGO reacted with PVA to produce PGO/PVA polymer via the esterification under the ultrasonic-assisted condition, and PGO/PVA polymer was structured by 2D lattice of PGO and the chain of PVA connected in the form of six-member lactone ring and phosphonic ester, and PGO/PVA film was constituted by PGO/PVA polymer, and surface resistivity of 0...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28067923/-a-phd-completed-8-are-extreme-dental-treatment-anxiety-fainting-or-gagging-separate-or-overlapping-phenomena
#7
C M H H van Houtem
Extreme dental treatment anxiety, fainting or gagging in the dentist's chair can seriously hinder a patient's dental treatment. While a series of widely diverse studies on extreme dental treatment anxiety have been carried out, less is known about gagging and fainting. The most important questions in this dissertation research were whether dental treatment anxiety ('stimuli') can be identified and whether dental treatment anxiety and fainting or gagging are separate or overlapping phenomena. Fear of dental treatment can be divided into several subtypes: fear of invasive treatments, loss of control and aversive physical sensations...
January 2017: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/28060029/corneal-densitometry-as-a-tool-to-measure-epithelial-ingrowth-after-laser-in-situ-keratomileusis
#8
Daniel Adran, Louis Vaillancourt, Mona Harissi-Dagher, Jonathan N Kruh, Zeba A Syed, Steven Robinson, Samir Melki
PURPOSE: This study evaluates the correlation between corneal densitometry and epithelial ingrowth (EI) after laser in situ keratomileusis (LASIK). METHODS: Corneal densitometry of 3 patients who developed EI after LASIK was measured with the Oculus Pentacam. Corneal densitometry readings of each patient were obtained preoperatively and postoperatively after ingrowth was discovered. Densitometry was recorded at the central nest of opacity and at the leading edges of EI...
January 4, 2017: Cornea
https://www.readbyqxmd.com/read/28054614/a-direct-localization-of-a-fast-radio-burst-and-its-host
#9
S Chatterjee, C J Law, R S Wharton, S Burke-Spolaor, J W T Hessels, G C Bower, J M Cordes, S P Tendulkar, C G Bassa, P Demorest, B J Butler, A Seymour, P Scholz, M W Abruzzo, S Bogdanov, V M Kaspi, A Keimpema, T J W Lazio, B Marcote, M A McLaughlin, Z Paragi, S M Ransom, M Rupen, L G Spitler, H J van Langevelde
Fast radio bursts are astronomical radio flashes of unknown physical nature with durations of milliseconds. Their dispersive arrival times suggest an extragalactic origin and imply radio luminosities that are orders of magnitude larger than those of all known short-duration radio transients. So far all fast radio bursts have been detected with large single-dish telescopes with arcminute localizations, and attempts to identify their counterparts (source or host galaxy) have relied on the contemporaneous variability of field sources or the presence of peculiar field stars or galaxies...
January 4, 2017: Nature
https://www.readbyqxmd.com/read/28048773/su-f-i-43-a-software-based-statistical-method-to-compute-low-contrast-detectability-in-computed-tomography-images
#10
M Chacko, S Aldoohan
PURPOSE: The low contrast detectability (LCD) of a CT scanner is its ability to detect and display faint lesions. The current approach to quantify LCD is achieved using vendor-specific methods and phantoms, typically by subjectively observing the smallest size object at a contrast level above phantom background. However, this approach does not yield clinically applicable values for LCD. The current study proposes a statistical LCD metric using software tools to not only to assess scanner performance, but also to quantify the key factors affecting LCD...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28033219/68ga-psma-hbed-uptake-on-cervicothoracic-stellate-ganglia-a-common-pitfall-on-pet-ct
#11
Mohsen Beheshti, Alireza Rezaee, Werner Langsteger
Ga-PSMA-HBED PET/CT showed promising results in staging and restaging of prostate cancer. However, nonspecific uptake has been reported in the celiac ganglia. In this case series, we showed faint radiotracer uptake on upper thoracic region in the location of cervicothoracic (stellate) ganglia. This ganglion is located anterior to the transverse process of C7 vertebra, inferior to subclavian artery, and superior to the neck of the first rib.
December 28, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28009388/acute-gastrointestinal-haemorrhage-on-board-a-cruise-ship-in-the-antarctic-peninsula
#12
Mathieu Carron, Peter Globokar, Bruno A Sicard
Antarctic tourism on board cruise ships has expanded since the 1990s, essentially in the Antarctic Peninsula. Due to remoteness, medical cases may evolve into life threatening conditions as emergency medical evacuations are challenging. We discuss the case of a young crew member who suddenly fainted with an epigastric pain and abundant rectal bleeding while on board a cruise ship heading to the Deception Island (62°57.6 South, 60°29.5 West), 44 h away from Ushuaia by sea. A medical evacuation was necessary to save the patient whose haemoglobin level rapidly decreased from 11 g/dL to 8...
2016: International Maritime Health
https://www.readbyqxmd.com/read/28005823/diode-laser-clinical-efficacy-and-mini-invasivity-in-surgical-exposure-of-impacted-teeth
#13
Mario Migliario, Manuela Rizzi, Alberta Greco Lucchina, Filippo Renò
The gold standard to arrange impacted teeth in the dental arch is represented by a surgical approach followed by orthodontic traction force application. In the literature, many surgical approaches are proposed to reach such a scope. The aim of the present study is to demonstrate how laser technique could positively assist surgical approaches.Study population was composed by 16 patients undergoing orthodontic treatment of 20 impacted teeth. In 10 patients (population A) surgical exposure of the impacted teeth was performed using a 980 nm diode laser, while in the other 10 patients (population B), surgical incision was performed using a traditional lancet...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28003847/in-vitro-protective-effect-of-phikud-navakot-extraction-on-erythrocyte
#14
Kanchana Kengkoom, Sumate Ampawong
Phikud Navakot (PN), Thai herbal remedy in National List of Essential Medicines, has been claimed to reduce many cardiovascular symptoms especially dizziness and fainting. Apart from blood supply, erythrocyte morphology, in both shape and size, is one of the main consideration factors in cardiovascular diseases and may be affected by vascular oxidative stress. However, little is known about antioxidative property of PN on erythrocyte to preserve red blood cell integrity. In this study, 1,000 μM hydrogen peroxide-induced oxidative stress was conducted on sheep erythrocyte...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27998013/neuroprotective-and-ameliorating-impacts-of-omega-3-against-aspartame-induced-neuronal-and-astrocytic-degeneration
#15
Eyad M T Ali, Hany M A Sonpol
Aspartame (ASP) is one of the commonest artificial sweetener used all over the world and considered as an extremely risky compound and raises a lot of controversy. Therefore, this study was designed to investigate cellular damage of the anterior horn cells in the spinal cord of albino male rats and the possibility of hindering these changes by using omega-3 (OM3).Thirty seven adult male albino rats were divided into three groups: Control, ASP-treated and ASP+OM3-treated groups. Spinal cord sections were prepared and stained with Hx&E, caspase-3 and GFAP immunostaining...
December 20, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27994016/spontaneous-neural-oscillations-bias-perception-by-modulating-baseline-excitability
#16
Luca Iemi, Maximilien Chaumon, Sébastien M Crouzet, Niko A Busch
: The brain exhibits organised fluctuations of neural activity even in the absence of tasks or sensory input. A prominent type of such spontaneous activity is the alpha rhythm, which influences perception and interacts with other ongoing neural activity. It is currently hypothesised that states of decreased prestimulus alpha oscillations indicate enhanced neural excitability, resulting in improved perceptual acuity. Nevertheless, it remains debated how changes in excitability manifest at the behavioral level in perceptual tasks...
December 19, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27991725/a-blind-climber-the-first-evidence-of-ultrasonic-echolocation-in-arboreal-mammals
#17
Aleksandra A Panyutina, Alexander N Kuznetsov, Ilya A Volodin, Alexey V Abramov, Irina B Soldatova
The means of orientation is studied in the Vietnamese pygmy dormouse Typhlomys chapensis, a poorly known enigmatic semi-fossorial semi-arboreal rodent. Data on eye structure are presented, which prove that Typhlomys (translated as "the blind mouse") is incapable of object vision - the retina is folded and retains no more than 2 500 ganglion cells in the focal plane, and the optic nerve is subject to gliosis. Hence, Typhlomys has no other means for rapid long-range orientation among tree branches other than echolocation...
December 19, 2016: Integrative Zoology
https://www.readbyqxmd.com/read/27988652/re-description-of-the-arctic-tardigrade-i-tenuibiotus-i-i-voronkovi-i-tumanov-2007-eutardigrada-macrobiotidea-with-the-first-molecular-data-for-the-genus
#18
Krzysztof Zawierucha, Małgorzata Kolicka, Łukasz Kaczmarek
Tardigrada is phylum of micrometazoans widely distributed throughout the world, because of old descriptions and insufficient morphometric data, many species currently need revision and re-description. Tenuibiotus voronkovi (Tumanov, 2007) is tardigrade previously only recorded from the Svalbard archipelago. This species' original description was based on two individuals with destroyed claws on the fourth pair of legs and a lack of complete morphometric data for buccal tube and claws. In this paper, we present a re-description of T...
November 24, 2016: Zootaxa
https://www.readbyqxmd.com/read/27978549/measurement-of-crosstalk-in-stereoscopic-display-systems-used-for-vision-research
#19
Daniel H Baker, Milena Kaestner, André D Gouws
Studying binocular vision requires precise control over the stimuli presented to the left and right eyes. A popular technique is to segregate signals either temporally (frame interleaving), spectrally (using colored filters), or through light polarization. None of these segregation methods achieves perfect isolation, and so a degree of crosstalk is usually apparent, in which signals intended for one eye are faintly visible to the other eye. Previous studies have reported crosstalk values mostly for consumer-grade systems...
December 1, 2016: Journal of Vision
https://www.readbyqxmd.com/read/27934763/selective-modulation-of-cortical-state-during-spatial-attention
#20
Tatiana A Engel, Nicholas A Steinmetz, Marc A Gieselmann, Alexander Thiele, Tirin Moore, Kwabena Boahen
Neocortical activity is permeated with endogenously generated fluctuations, but how these dynamics affect goal-directed behavior remains a mystery. We found that ensemble neural activity in primate visual cortex spontaneously fluctuated between phases of vigorous (On) and faint (Off) spiking synchronously across cortical layers. These On-Off dynamics, reflecting global changes in cortical state, were also modulated at a local scale during selective attention. Moreover, the momentary phase of local ensemble activity predicted behavioral performance...
December 2, 2016: Science
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