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https://www.readbyqxmd.com/read/28645038/when-attention-wanders-pupillometric-signatures-of-fluctuations-in-external-attention
#1
Mahiko Konishi, Kevin Brown, Luca Battaglini, Jonathan Smallwood
Attention is not always directed to events in the external environment. On occasion our thoughts wander to people and places distant from the here and now. Sometimes, this lack of external attention can compromise ongoing task performance. In the current study we set out to understand the extent to which states of internal and external attention can be determined using pupillometry as an index of ongoing cognition. In two experiments we found that periods of slow responding were associated with elevations in the baseline pupil signal over three and a half seconds prior to a behavioural response...
June 20, 2017: Cognition
https://www.readbyqxmd.com/read/28644235/chandelier-illumination-for-descemet-membrane-endothelial-keratoplasty
#2
Toshiki Shimizu, Takahiko Hayashi, Kentaro Yuda, Ayako Tsuchiya, Itaru Oyakawa, Nobuhisa Mizuki, Naoko Kato
PURPOSE: To describe a simple technique that uses posterior chandelier illumination during Descemet membrane endothelial keratoplasty in cases of severe bullous keratopathy (BK). METHODS: Five eyes of 4 patients with advanced BK undergoing Descemet membrane endothelial keratoplasty were retrospectively analyzed. The pupil of the host eye was not treated with mydriatic or miotic agents. The chandelier illuminator was inserted transconjunctivally into the vitreous cavity from the pars plana...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28640038/impact-of-noise-and-noise-reduction-on-processing-effort-a-pupillometry-study
#3
Dorothea Wendt, Renskje K Hietkamp, Thomas Lunner
OBJECTIVES: Speech perception in adverse listening situations can be exhausting. Hearing loss particularly affects processing demands, as it requires increased effort for successful speech perception in background noise. Signal processing in hearing aids and noise reduction (NR) schemes aim to counteract the effect of noise and reduce the effort required for speech recognition in adverse listening situations. The present study examined the benefit of NR schemes, applying a combination of a digital NR and directional microphones, for reducing the processing effort during speech recognition...
June 20, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28639450/-bilateral-congenital-multiple-pigmented-vitreous-cysts-in-a%C3%A2-three-year-old-girl-ten-years-follow-up
#4
J Štěpánková, M Hósová, D Dotřelová
The authors present a case report of a three-year-old female patient with bilateral multiple anterior vitreous cysts. During examination for intermittent esotropia of the right eye was diagnosed not only hypermetropia, astigmatism and anisometropia, but also pigmented changes in peripheral retrolental space of both eyes. Clinical examination under general anaesthesia revealed bilateral multiple pigmented immobile vitreous cysts. There were five almost spherical, translucent, but slightly pigmented cysts on its cover on the right eye and four similar on the left, but visible only with dilated pupils...
2017: Ceská a Slovenská Oftalmologie
https://www.readbyqxmd.com/read/28638823/comparing-the-effect-of-animal-rearing-education-in-japan-with-conventional-animal-assisted-education
#5
REVIEW
Yuka Nakajima
An increasing number of teachers are introducing animals into their class so that pupils foster cognitive, physiological, and social skills through their interaction with animals. Along with such an educational style termed animal-assisted education (AAE), Japanese formal education has also utilized animals for education. Japanese animal-rearing education is unique regarding the following two points: (1) it takes the form of "education through assisting animals" rather than "animals assisting education" and (2) animal rearing is embedded in formal education...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28638055/pupil-response-hazard-rates-predict-perceived-gaze-durations
#6
Nicola Binetti, Charlotte Harrison, Isabelle Mareschal, Alan Johnston
We investigated the mechanisms for evaluating perceived gaze-shift duration. Timing relies on the accumulation of endogenous physiological signals. Here we focused on arousal, measured through pupil dilation, as a candidate timing signal. Participants timed gaze-shifts performed by face stimuli in a Standard/Probe comparison task. Pupil responses were binned according to "Longer/Shorter" judgements in trials where Standard and Probe were identical. This ensured that pupil responses reflected endogenous arousal fluctuations opposed to differences in stimulus content...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28637517/priorities-for-african-youth-for-engaging-in-dohad
#7
A J Macnab, R Mukisa
A challenge for implementing DOHaD-defined health promotion is how to engage the at-risk population. The WHO Health Promoting School (HPS) model has proven success engaging youth and improving health behaviors. Hence, we introduced DOHaD concepts to 151 pupils aged 12-15 years in three HPS programs in rural Uganda, inquired what factors would make DOHaD-related health promotion resonate with them, and discussed how they recommended making learning about DOHaD acceptable to youth. Economic factors were judged the most compelling; with nutrition and responsive care elements next in importance...
June 22, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28635402/analysing-the-vocal-behaviour-of-teachers-during-classroom-teaching-using-a-portable-voice-accumulator
#8
Manfred Nusseck, Bernhard Richter, Claudia Spahn, Matthias Echternach
PURPOSE: Teachers are at a considerable risk of developing vocal health problems due to intensive voice use during teaching. This study investigated factors related to the teacher's voice during a teaching situation. METHODS: Overall, 113 teachers were recorded during a typical class lesson, lasting on average 48 min. A portable voice dosimeter (VoxLog System) was used to measure the sound pressure level (SPL) of the noise in the classroom, the teacher's voice SPL, the fundamental frequency (fo) and the phonation time...
March 3, 2017: Logopedics, Phoniatrics, Vocology
https://www.readbyqxmd.com/read/28632845/iris-malformation-and-anterior-segment-dysgenesis-in-mice-and-humans-with-a-mutation-in-pi-3-kinase
#9
Marie H Solheim, Allen C Clermont, Jonathon N Winnay, Erlend Hallstensen, Anders Molven, Pål R Njølstad, Eyvind Rødahl, C Ronald Kahn
Purpose: To determine the ocular consequences of a dominant-negative mutation in the p85α subunit of phosphatidylinositol 3-kinase (PIK3R1) using a knock-in mouse model of SHORT syndrome, a syndrome associated with short stature, lipodystrophy, diabetes, and Rieger anomaly in humans. Methods: We investigated knock-in mice heterozygous for the SHORT syndrome mutation changing arginine 649 to tryptophan in p85α (PIK3R1) using physical examination, optical coherence tomography (OCT), tonometry, and histopathologic sections from paraffin-embedded eyes, and compared the findings to similar investigations in two human subjects with SHORT syndrome heterozygous for the same mutation...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28631315/a-two-year-study-of-%C3%AE-9-tetrahydrocannabinol-concentrations-in-drivers-part-2-physiological-signs-on-drug-recognition-expert-dre-and-non-dre-examinations
#10
Kari Declues, Shelli Perez, Ariana Figueroa
Whole blood samples were examined for ∆(9) -Tetrahydrocannabinol (THC) over 2 years in drivers suspected of driving under the influence. Part one of the study examined the link between [THC] and performance on field sobriety tests. This portion examined objective signs, eye examinations and physiological indicators; and their relationship to the presence of THC. Several objective signs were excellent indicators of the presence of THC: red eyes (94%), droopy eyelids (85.6%), affected speech (87.6%), tongue coating (96...
June 20, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28629391/anterior-lens-capsule-and-epithelium-thickness-measurements-using-spectral-domain-optical-coherence-tomography
#11
Jing Dong, Yading Jia, Yaqin Zhang, Haining Zhang, Zhijie Jia, Suhua Zhang, Qiang Wu, Qingmao Hu, Tianqiao Zhang, Xiaogang Wang
BACKGROUND: To investigate the anterior lens capsule and epithelium thickness (defined as anterior lens capsular complex: ALCC) in normal Chinese subjects using spectral-domian optical coherence tomography (SD-OCT) and examine the factors that may influence the ALCC, such as age, gender, pupil diameter (PD) and signal strength index (SSI). METHODS: A prospective observational case series. One-hundred-thirty-four normal subjects (134 eyes) were included. The ALCCs were determined manually via SD-OCT...
June 19, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28624873/short-communication-first-report-of-nematodes-parasitizing-the-four-eyed-fish-anableps-anableps-pisces-cyprinodontiformes
#12
Juliana Souza Ribeiro, Francisco Carlos Rodrigues de Oliveira, Nicole Brand Ederli
The genus Anableps is composed of species Anableps anableps, Anableps dowi, and Anableps microlepis. These fishes are tropical and usually live on the surface of brackish water, being popularly known as four-eyed-fishes due to the presence of prominent eyes and a pupil split horizontally. A. anableps and A. microlepis are considered as sister species that live in sympatry in South America. A. dowi, however, is restricted to the Pacific Ocean (Central America) and is considered the most primitive species of this genus...
June 17, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28624522/decision-related-factors-in-pupil-old-new-effects-attention-response-execution-and-false-memory
#13
Andreas Brocher, Tim Graf
In this study, we investigate the effects of decision-related factors on recognition memory in pupil old/new paradigms. In Experiment 1, we used an old/new paradigm with words and pseudowords and participants made lexical decisions during recognition rather than old/new decisions. Importantly, participants were instructed to focus on the nonword-likeness of presented items, not their word-likeness. We obtained no old/new effects. In Experiment 2, participants discriminated old from new words and old from new pseudowords during recognition, and they did so as quickly as possible...
June 15, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28623926/perennial-transmission-of-malaria-in-the-low-altitude-areas-of-baringo-county-kenya
#14
Collince J Omondi, Daniel Onguru, Lucy Kamau, Mark Nanyingi, George Ong'amo, Benson Estambale
BACKGROUND: Malaria causes the greatest public health burden in sub-Saharan Africa where high mortality occurs mainly in children under 5 years of age. Traditionally, malaria has been reported mainly in the lowlands endemic regions of western Kenya, while the highlands of the Rift Valley have been relatively free except for the sporadic epidemics in some areas. Baringo County is located in the Kenyan highlands. The county generally experiences seasonal transmission of malaria. A few hotspots which experience continuous malaria transmission in the county do however exist...
June 17, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28623805/heroin-and-pharmaceutical-opioid-overdose-events-emergency-medical-response-characteristics
#15
Caleb J Banta-Green, Phillip O Coffin, Jennie A Schoeppe, Joseph O Merrill, Lauren K Whiteside, Abigail K Ebersol
BACKGROUND: Emergency Medical Services (EMS) data may provide insight into opioid overdose incidence, clinical characteristics, and medical response. This analysis describes patient characteristics, clinical features, and EMS response to opioid overdoses, comparing heroin and pharmaceutical opioid (PO) overdoses, using a structured opioid overdose case criteria definition. METHODS: A case series study was conducted. EMS medical staff screened cases for possible overdoses and study staff categorized the likelihood of opioid overdose...
June 10, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28623362/super-resolution-microscopy-with-very-large-working-distance-by-means-of-distributed-aperture-illumination
#16
Udo Birk, Johann V Hase, Christoph Cremer
The limits of conventional light microscopy ("Abbe-Limit") depend critically on the numerical aperture (NA) of the objective lens. Imaging at large working distances or a large field-of-view typically requires low NA objectives, thereby reducing the optical resolution to the multi micrometer range. Based on numerical simulations of the intensity field distribution, we present an illumination concept for a super-resolution microscope which allows a three dimensional (3D) optical resolution around 150 nm for working distances up to the centimeter regime...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623164/thick-corneas-large-pupils-and-a-giant-problem
#17
Francesco Pellegrini, Giovanni Prosdocimo, Daniela Bonsanto, Rod Foroozan
An 87-year-old woman presented 1 month after uneventful cataract surgery with ipsilateral corneal edema. She was diagnosed with pseudophakic bullous keratopathy and scheduled for endothelial transplantation. However, a few days later, she presented with bilateral corneal edema, dilated pupils and further reduction of visual acuity. Neuro-Ophthalmic evaluation disclosed a bilateral ocular ischemic syndrome causing complete visual loss. Temporal artery biopsy was consistent with GCA. Corneal decompensation should be considered as a rare presentation of GCA, that ophthalmologists should suspect in any case of unilateral or bilateral ocular ischemic syndrome...
June 13, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28622894/impact-of-stimulus-related-factors-and-hearing-impairment-on-listening-effort-as-indicated-by-pupil-dilation
#18
Barbara Ohlenforst, Adriana A Zekveld, Thomas Lunner, Dorothea Wendt, Graham Naylor, Yang Wang, Niek J Versfeld, Sophia E Kramer
Previous research has reported effects of masker type and signal-to-noise ratio (SNR) on listening effort, as indicated by the peak pupil dilation (PPD) relative to baseline during speech recognition. At about 50% correct sentence recognition performance, increasing SNRs generally results in declining PPDs, indicating reduced effort. However, the decline in PPD over SNRs has been observed to be less pronounced for hearing-impaired (HI) compared to normal-hearing (NH) listeners. The presence of a competing talker during speech recognition generally resulted in larger PPDs as compared to the presence of a fluctuating or stationary background noise...
May 25, 2017: Hearing Research
https://www.readbyqxmd.com/read/28620980/case-of-autoimmune-autonomic-ganglionopathy-manifesting-anhidrosis
#19
Asuka Yoshifuku, Koichi Yoneda, Yusuke Sakiyama, Osamu Higuchi, Shunya Nakane, Takuro Kanekura
Autoimmune autonomic ganglionopathy (AAG), clinically characterized by gastrointestinal dysmotility, orthostatic hypotension and tonic pupils, is an idiopathic acquired disorder of the autonomic nervous system elicited by antibodies against ganglionic acetylcholine receptor (gAChR). We encountered a 60-year-old man who presented with severe anhidrosis, difficulty in thermoregulation, orthostatic hypotension, gastrointestinal dysmotility, tonic pupils and ptosis. Histologically, an anhidrotic skin sample was normal...
June 16, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28619515/dynamic-accommodation-without-feedback-does-not-respond-to-isolated-blur-cues
#20
José J Esteve-Taboada, Antonio J Del Águila-Carrasco, Paula Bernal-Molina, Norberto López-Gil, Robert Montés-Micó, Philip Kruger, Iván Marín-Franch
The aim of this study was to determine whether dynamic accommodation responds to isolated blur cues without feedback, and without changes in the distance of the object. Nine healthy subjects aged 21 to 40 years were recruited. Four different aberration patterns were used as stimuli to induce blur: (1) the eye's natural, uncorrected, optical aberrations, (2) all aberrations corrected, (3) spherical aberration only, and (4) astigmatism only. The stimulus was a video animation based on computer-generated images of a monochromatic Maltese cross...
June 12, 2017: Vision Research
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