557,681 results match your criteria visual fieldconclusions


Detection Methods for Early Caries Diagnosis: A Systematic Review and Meta-Analysis.

Caries Res 2021 Jun 15:1-13. Epub 2021 Jun 15.

Department of Operative Dentistry, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece.

The aim was to appraise the evidence on the performance of various means for the detection of incipient caries in vivo. Five databases of published and unpublished research were searched for studies from January 2000 to October 2019. Search terms included "early caries" and "caries detection. Read More

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Detection of fixation points using a small visual landmark for brain-computer interfaces.

J Neural Eng 2021 Jun 15. Epub 2021 Jun 15.

Dept. of Biomedical Engineering, Tianjin University, School of Precision Instrument and Opto-Electronics Engineering, Tianjin 300072, Tianjin, 300072, CHINA.

Abstract- Objective: The speed of visual brain-computer interfaces (v-BCIs) has been greatly improved in recent years. However, the traditional v-BCI paradigms require users to directly gaze at the intensive flickering items, which would cause severe problems such as visual fatigue and excessive visual resource consumption in practical applications. Therefore, it is imperative to develop a user-friendly v-BCI. Read More

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Cerebrovascular disease, neurodegeneration, and clinical phenotype in dementia with Lewy bodies.

Neurobiol Aging 2021 May 14;105:252-261. Epub 2021 May 14.

Department of Radiology, Mayo Clinic, Rochester, MN, USA. Electronic address:

We investigated whether cerebrovascular disease contributes to neurodegeneration and clinical phenotype in dementia with Lewy bodies (DLB). Regional cortical thickness and subcortical gray matter volumes were estimated from structural magnetic resonance imaging (MRI) in 165 DLB patients. Cortical and subcortical infarcts were recorded and white matter hyperintensities (WMHs) were assessed. Read More

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Quantifying effects of reverse linear perspective as a visual cue on vehicle and platoon crash risk variations in car-following using path analysis.

Accid Anal Prev 2021 Jun 12;159:106215. Epub 2021 Jun 12.

School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan, 430205, China. Electronic address:

Road markings are prevalent in practice as perceptual countermeasures to crashes, and a great deal of them have been used for speed reduction. However, there is rare seen any equivalent measures especially for distance control. More importantly, the visual perceptual mechanism of road markings on driving behaviors and crash risk is still blur. Read More

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Speeding through the pandemic: Perceptual and psychological factors associated with speeding during the COVID-19 stay-at-home period.

Authors:
A Tucker K L Marsh

Accid Anal Prev 2021 Jun 12;159:106225. Epub 2021 Jun 12.

University of Connecticut Psychological Sciences Department, USA.

During the COVID-19 stay-at-home period there were observed increases in both the percentage of cars engaged in extreme speeding, and the percentage of cars traveling below the speed limit. These changes have been attributed to unusually low traffic volume during the stay-at-home period. We develop a novel theoretical account, based on existing empirical research, of perceptual and psychological processes that may account for changes in speeding behavior under low traffic volume conditions. Read More

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Optic nerve mobilization as an alternative to anterior clinoidectomy in superior carotid-ophthalmic aneurysms: Operative technique.

World Neurosurg 2021 Jun 12. Epub 2021 Jun 12.

Department of Neurosurgery, Padilla Hospital, Tucumán, Argentina.

Background: Carotid-ophthalmic aneurysms arise from the internal carotid artery between the distal dural ring and the origin of the posterior communicating artery. The surgical treatment of these aneurysms usually requires an anterior clinoidectomy. However, this procedure is not without complications. Read More

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Comparison of percutaneous kyphoplasty and pedicle screw fixation for treatment of thoracolumbar severe osteoporotic vertebral compression fracture with kyphosis.

World Neurosurg 2021 Jun 12. Epub 2021 Jun 12.

Department of Spine surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China; Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510700, China. Electronic address:

Background: Pedicle screw fixation (PSF) was considered to be the preferred surgery for treatment of severe osteoporotic vertebral compression fracture (sOVCF), while sOVCF was traditionally regarded as a relative contraindication to minimally invasive percutaneous kyphoplasty (PKP). Debate continues on the selection of surgical methods for sOVCF. This study aimed to compare the efficacy and safety between PKP and PSF. Read More

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Telehealth Sustainability in a Neurosurgery Department During the COVID-19 Pandemic.

World Neurosurg 2021 Jun 12. Epub 2021 Jun 12.

Neurosurgery, University of Kentucky, 800 Rose St., Lexington, KY, 40508 USA; Brain Restoration Center, University of Kentucky, 800 Rose St., Lexington, KY, 40508 USA; Neuroscience, University of Kentucky, 800 Rose St., Lexington, KY, 40508 USA. Electronic address:

Background: The pandemic shifted the dynamics of healthcare and neurosurgical practice. Elective surgeries were suspended for 8 weeks in Kentucky. Our objective was to determine if telehealth (TH) visits could be sustained as an alternative to in-person visits. Read More

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Evaluation on effectiveness of treatment strategies for degenerative lumbar spinal stenosis: a systematic review and network meta-analysis of clinical studies.

World Neurosurg 2021 Jun 12. Epub 2021 Jun 12.

The Center for Pain Medicine, Peking University Third Hospital, Beijing 100191, China. Electronic address:

Objective: Lumbar spinal stenosis (LSS) is a common disease in spinal surgery. At present, many related treatment methods have been reported, but their effectiveness still lacks a systematic comparison. We aimed to evaluate the clinical outcomes related to the efficacy and safety of these treatment strategies via a network meta-analysis. Read More

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Coronavirus Disease-2019 (COVID-19) and Pituitary Apoplexy: A Single-Center Case Series and Review of the Literature.

World Neurosurg 2021 Jun 12. Epub 2021 Jun 12.

Departments of Neurosurgery(,) University of Mississippi Medical Center, Jackson, MS, United States.

Background: Pituitary apoplexy (PA) is a rare but life-threatening condition characterized by pituitary infarction and hemorrhage, most often in the setting of a preexisting adenoma. The risk factors and mechanisms associated with PA are poorly understood. Although neurovascular manifestations of coronavirus disease-19 (COVID-19) infection have been documented, its association with PA is to be determined. Read More

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Voxel-to-voxel predictive models reveal unexpected structure in unexplained variance.

Neuroimage 2021 Jun 12:118266. Epub 2021 Jun 12.

Department of Neuroscience, Medical University of South Carolina, Charleston, SC, USA. Electronic address:

Encoding models based on deep convolutional neural networks (DCNN) predict BOLD responses to natural scenes in the human visual system more accurately than many other currently available models. However, DCNN-based encoding models fail to predict a significant amount of variance in the activity of most voxels in all visual areas. This failure could reflect limitations in the data (e. Read More

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Vascularized Carotid Atherosclerotic Plaque Models for the Validation of Novel Methods of Quantifying Intra-Plaque Neovascularization.

J Am Soc Echocardiogr 2021 Jun 12. Epub 2021 Jun 12.

Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Canada;; Department of Medicine, Cardiovascular Imaging Network at Queen's (CINQ), Queen's University, Canada. Electronic address:

Background: Intraplaque neovascularization (IPN) in advanced lesions of the carotid artery has been linked to plaque progression and risk of rupture. Quantitative measurement of IPN may provide a more powerful tool for the detection of such "vulnerable" plaque than the current visual scoring grading method. The aim of this study was to develop a phantom platform of a neovascularized atherosclerotic plaque within a carotid artery to assess new methods of quantifying IPN. Read More

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The majority of conversion total hip arthroplasties can be considered primary replacements - a matched cohort study.

Acta Orthop Belg 2021 Mar;87(1):17-23

The success of conversion Total Hip Arthroplasty (THA) among primary THA and revision THA re- mains unclear. We hypothesized that most conversion THAss can be performed using primary implants and will have an uncomplicated post-operative course. Thirty-six patients (23 females, mean age 68,0y) who underwent conversion THA for failed interventions for proximal femur fractures in the period 2006-2018 were matched sequentially against patients of the same sex and age who underwent primary THA or revision THA. Read More

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Assessment of clinical efficacy of lidocaine/tetracaine 7%/7% peel cream in fractional micro-ablative laser procedure-associated pain for facial skin ageing treatment. A randomized, controlled, single-blind trial.

J Cosmet Dermatol 2021 Jun 15. Epub 2021 Jun 15.

R&D Cantabria Labs Difa Cooper.

Background: Lidocaine/tetracaine 7%/7% peel cream (L/T-pC) is very effective in reducing pain in several dermatological procedures, such as hair or tattoo laser removal or conventional photodynamic therapy associated pain. Fractional laser resurfacing (FLR) is an effective treatment strategy for facial skin ageing. The main drawback of FLR is the procedure-associated pain. Read More

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Using EEG to decode semantics during an artificial language learning task.

Brain Behav 2021 Jun 15. Epub 2021 Jun 15.

Departments of Computing Science and Psychology, University of Alberta, Edmonton, Canada.

Background: As we learn a new nonnative language (L2), we begin to build a new map of concepts onto orthographic representations. Eventually, L2 can conjure as rich a semantic representation as our native language (L1). However, the neural processes for mapping a new orthographic representation to a familiar meaning are not well understood or characterized. Read More

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Comparison of injectable filler locations in men and women: An age-matched case analysis.

J Cosmet Dermatol 2021 Jun 15. Epub 2021 Jun 15.

Laser & Skin Surgery Center of New York, New York, NY, USA.

In recent years, the popularity of fillers has risen significantly. Traditionally, women have undergone the vast majority of cosmetic procedures, but men have steadily shown increasing interest. Recently, significant research has been dedicated to understanding the anatomic differences between male and female facial structures and their clinical aesthetic implications, especially for filler placement. Read More

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Thresholds, Firing Rates, and Order of Recruitment of Anterior Temporalis Muscle Single-Motor Units During Experimental Masseter Muscle Pain.

J Oral Facial Pain Headache 2021 Spring;35(2):93-104

Aims: To test the hypothesis that, in comparison with control, experimental noxious stimulation of the right masseter muscle would result in significant changes in the firing rates, thresholds, and recruitment orders of single-motor units (SMUs) of the nonpainful, synergistic right anterior temporalis muscle during goal-directed isometric biting task performance.

Methods: Twenty healthy volunteers received an infusion of hypertonic saline (HS; 5% sodium chloride) into the right masseter to produce pain intensity of 40 to 60 on a 100-mm visual analog scale (VAS). Isotonic saline (IS) infusion was a control. Read More

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A Knowledge Distillation Ensemble Framework for Predicting Short and Long-term Hospitalisation Outcomes from Electronic Health Records Data.

IEEE J Biomed Health Inform 2021 Jun 15;PP. Epub 2021 Jun 15.

The ability to perform accurate prognosis of patients is crucial for proactive clinical decision making, informed resource management and personalised care. Existing outcome prediction models suffer from a low recall of infrequent positive outcomes. We present a highly-scalable and robust machine learning framework to automatically predict adversity represented by mortality and ICU admission from time-series vital signs and laboratory results obtained within the first 24 hours of hospital admission. Read More

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Multi-Resolution Aitchison Geometry Image Denoising for Low-Light Photography.

IEEE Trans Image Process 2021 Jun 15;PP. Epub 2021 Jun 15.

In the low-photon imaging regime, noise in the image sensors is dominated by shot noise, best modeled statistically as Poisson distribution. In this work, we show that the Poisson likelihood function is very well matched with the Bayesian estimation of the "difference of log of contrast of pixel intensities." More specifically, our work is rooted in statistical compositional data analysis, whereby we reinterpret the Aitchison geometry as a multi-resolution analysis in the log-pixel domain. Read More

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Estimate of the prevalence of depression among older people in Africa: a systematic review and meta-analysis.

Aging Ment Health 2021 Jun 15:1-11. Epub 2021 Jun 15.

School of Public Health, Curtin University, Perth, Australia.

Objective: The current systematic review and meta-analysis aimed to estimate the pooled prevalence of depression among elderly people in Africa.

Method: We have searched CINAHIL, PubMed, SCOPUS and Psych-INFO databases to identify important observational studies which reported the prevalence of depression among the elderly. We used a random-effects model due to reported heterogeneity among the included studies. Read More

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Cryotherapy Produces Pain Relief in Young People with Primary Dysmenorrhea.

Ther Hypothermia Temp Manag 2021 Jun 15. Epub 2021 Jun 15.

Bioscience and Health Posgraduate Program, Universidade Estadual do Oeste do Paraná (UNIOESTE), Cascavel, Brazil.

Primary dysmenorrhea is characterized as painful menstruation without associated pelvic disease and has been considered common among young people of reproductive age. Cryotherapy is a technique aimed at analgesia and anti-inflammatory action. The objective of this study was to analyze the analgesic efficacy of cryotherapy in sedentary youth with primary dysmenorrhea. Read More

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Using Participatory Design Methods to Explore Changes in the Self-Efficacy of Students with Visual Impairments After Playing Exergames.

Games Health J 2021 Jun 14. Epub 2021 Jun 14.

Institute of Foreign Languages, Changchun University of Science and Technology, Changchun, China.

To explore changes in task/scheduling self-efficacy in children with visual impairments after playing exergames, using the participatory design (PD) method to guide students with visual impairments to engage in the design and test of exergames. A pre-/post-test was used with two experimental groups (nine high school students with visual impairments aged 18-21, nine junior high school students with visual impairments aged 14-17). Data were analyzed by an independent-/paired-sample -test to assess changes in task/scheduling self-efficacy of different groups after gameplay. Read More

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Brownness of Organic Aerosol over the United States: Evidence for Seasonal Biomass Burning and Photobleaching Effects.

Environ Sci Technol 2021 Jun 15. Epub 2021 Jun 15.

Division of Atmospheric Sciences, Desert Research Institute, Reno, Nevada 89512, United States.

Light-absorptivity of organic aerosol may play an important role in visibility and climate forcing, but it has not been assessed as extensively as black carbon (BC) aerosol. Based on multiwavelength thermal/optical analysis and spectral mass balance, this study quantifies BC for the U.S. Read More

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Homogeneous Visual and Fluorescence Detection of Circulating Tumor Cells in Clinical Samples Selective Recognition Reaction and Enzyme-Free Amplification.

ACS Nano 2021 Jun 15. Epub 2021 Jun 15.

Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China.

Here we report a simple all-nucleic-acid enzyme-free catalyzed hairpin assembly assisted amplification strategy with quantum dots (QDs) as the nanoscale signal reporter for homogeneous visual and fluorescent detection of A549 lung cancer cells from clinical blood samples. This work was based on the phenomenon that CdTe QDs can selectively recognize Ag and C-Ag-C and by using mucin 1 as the circulating tumor cells (CTCs) marker and aptamer as the recognition probe. Under optimized conditions, the limits of detections as low as 0. Read More

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Optimizing Order of Administration for Concussion Baseline Assessment Among NCAA Student-Athletes and Military Cadets.

Sports Med 2021 Jun 15. Epub 2021 Jun 15.

UGA Concussion Research Laboratory, Department of Kinesiology, University of Georgia, Ramsey Student Center, 330 River Rd., Athens, GA, 30606, USA.

Background: Concussion pre-injury (i.e., baseline) assessments serve as a benchmark comparison point in the event an individual sustains a concussion and allows clinicians to compare to post-injury measures. Read More

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Neuropathic Corneal Pain Following LASIK Surgery: A Retrospective Case Series.

Ophthalmol Ther 2021 Jun 15. Epub 2021 Jun 15.

HDR Research Center, Hoopes Vision, University of Utah Health Sciences Center, 11820 S. State Street Suite #200, Draper, UT, 84020, USA.

Introduction: Transient dry eye symptoms have been reported following laser in situ keratomileusis (LASIK). Very rarely, patients may present with debilitating symptoms of dry eye syndrome (DES) with limited or no evidence of ocular surface disease. These patients are diagnosed with a form of DES known as neuropathic corneal pain (NCP). Read More

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Complications and visual outcomes of cataract surgery in patients with pseudoexfoliation.

Int Ophthalmol 2021 Jun 15. Epub 2021 Jun 15.

Cataract & Refractive Surgery Services, L V Prasad Eye Institute, Hyderabad, India.

Purpose: To compare outcomes of cataract surgery performed by ophthalmic trainees and consultants in patients associated with pseudoexfoliation (PXF) METHODS: Retrospective review of medical records of all patients with PXF who had undergone cataract surgery from January 2016 to December 2018 at L V Prasad Eye Institute, Hyderabad, India, were analysed RESULTS: A total of 914 eyes were included in the study; surgeries on 501 (54.8%) eyes with PXF were performed by trainees, while 413 (45.2%) were performed by consultants. Read More

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A deep convolutional visual encoding model of neuronal responses in the LGN.

Brain Inform 2021 Jun 15;8(1):11. Epub 2021 Jun 15.

Computer and Systems Engineering Department, Faculty of Engineering, Ain Shams University, 1 El-Sarayat St., Abbassia, Cairo, Egypt.

The Lateral Geniculate Nucleus (LGN) represents one of the major processing sites along the visual pathway. Despite its crucial role in processing visual information and its utility as one target for recently developed visual prostheses, it is much less studied compared to the retina and the visual cortex. In this paper, we introduce a deep learning encoder to predict LGN neuronal firing in response to different visual stimulation patterns. Read More

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Rapid and selective detection of macrocyclic trichothecene producing Stachybotrys chartarum strains by loop-mediated isothermal amplification (LAMP).

Anal Bioanal Chem 2021 Jun 15. Epub 2021 Jun 15.

TUM School of Life Sciences, Technical University of Munich, Gregor-Mendel-Str. 4, 85354, Freising, Germany.

Cytotoxic macrocyclic trichothecenes such as satratoxins are produced by chemotype S strains of Stachybotrys chartarum. Diseases such as stachybotryotoxicosis in animals and the sick building syndrome as a multifactorial disease complex in humans have been associated with this mold and its toxins. Less toxic non-chemotype S strains of S. Read More

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