8,897 results match your criteria enhancement visual

A high sensitive platinum-modified colloidal gold immunoassay for tenuazonic acid detection based on monoclonal IgG.

Food Chem 2021 May 6;360:130021. Epub 2021 May 6.

State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address:

Due to the threat of tenuazonic acid (TA) to public health, it is urgent to establish rapidly effective and sensitive assay methods for TA. In this study, a TA-specific IgG monoclonal antibody (McAb) with high affinity (Kaff was 1.72 × 10 L/mol) was screened, and the developed icELISA for TA detection has IC of 2. Read More

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Imbalanced social-communicative and restricted repetitive behavior subtypes of autism spectrum disorder exhibit different neural circuitry.

Commun Biol 2021 May 14;4(1):574. Epub 2021 May 14.

Roche Pharma Research and Early Development, Neuroscience, Ophthalmology and Rare Diseases, Roche Innovation Center Basel, Basel, Switzerland.

Social-communication (SC) and restricted repetitive behaviors (RRB) are autism diagnostic symptom domains. SC and RRB severity can markedly differ within and between individuals and may be underpinned by different neural circuitry and genetic mechanisms. Modeling SC-RRB balance could help identify how neural circuitry and genetic mechanisms map onto such phenotypic heterogeneity. Read More

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DEVILS: a tool for the visualization of large datasets with a high dynamic range.

F1000Res 2020 27;9:1380. Epub 2020 Nov 27.

BioImaging & Optics platform (BIOP), Faculty of Life Sciences (SV), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

The number of grey values that can be displayed on monitors and be processed by the human eye is smaller than the dynamic range of image-based sensors. This makes the visualization of such data a challenge, especially with specimens where small dim structures are equally important as large bright ones, or whenever variations in intensity, such as non-homogeneous staining efficiencies or light depth penetration, becomes an issue. While simple intensity display mappings are easily possible, these fail to provide a one-shot observation that can display objects of varying intensities. Read More

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November 2020

Efficacy of Ayurvedic treatment protocol in gouty arthritis - a clinical study.

J Complement Integr Med 2021 May 11. Epub 2021 May 11.

Department of Kayachikitsa, Amrita School of Ayurveda, Amritapuri, Amrita Vishwa Vidyapeetham, Kollam, India.

Objectives: Gout is an inflammatory response to the Monosodium urate crystals formed secondary to hyperuricaemia. The prevalence of gout has increased in recent years. The current conventional medical management aims at symptomatic management. Read More

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Visual tools for teaching machine learning in K-12: A ten-year systematic mapping.

Educ Inf Technol (Dordr) 2021 May 1:1-46. Epub 2021 May 1.

Department of Informatics and Statistics, Federal University of Santa Catarina, Florianópolis, Brazil.

Teaching Machine Learning in school helps students to be better prepared for a society rapidly changing due to the impact of Artificial Intelligence. This requires age-appropriate tools that allow students to develop a comprehensive understanding of Machine Learning in order to become creators of smart solutions. Following the trend of visual languages for introducing algorithms and programming in K-12, we present a ten-year systematic mapping of emerging visual tools that support the teaching of Machine Learning at this educational stage and analyze the tools concerning their educational characteristics, support for the development of ML models as well as their deployment and how the tools have been developed and evaluated. Read More

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Joint effect of defocus blur and spatial attention.

Vision Res 2021 May 5;185:88-97. Epub 2021 May 5.

School of Optometry, Hong Kong Polytechnic University, Hong Kong, China; Interdisciplinary Division of Biomedical Engineering, Hong Kong Polytechnic University, Hong Kong SAR, China.

Defocus blur and spatial attention both act on our ability to see clearly over time. However, it is currently unknown how these two factors interact because studies on spatial resolution only focused on the separate effects of attention and defocus blurs. In this study, eleven participants performed a resolution acuity task along the diagonal 135˚/315˚ with horizontal, at 8˚ eccentricity for clear and blurred Landolt C images under various manipulations of covert endogenous attention. Read More

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Underwater Image Enhancement via Medium Transmission-Guided Multi-Color Space Embedding.

IEEE Trans Image Process 2021 14;30:4985-5000. Epub 2021 May 14.

Underwater images suffer from color casts and low contrast due to wavelength- and distance-dependent attenuation and scattering. To solve these two degradation issues, we present an underwater image enhancement network via medium transmission-guided multi-color space embedding, called Ucolor. Concretely, we first propose a multi-color space encoder network, which enriches the diversity of feature representations by incorporating the characteristics of different color spaces into a unified structure. Read More

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Place of a new radiological index in predicting pulp exposure before intervention for deep carious lesions.

Oral Radiol 2021 May 5. Epub 2021 May 5.

Faculté d'Odontologie, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France.

Background: During interventions for deep caries lesions without severe symptoms, preserving pulpal vitality is important to ensure treatment success, improve organ prognosis, and decrease cost-effectiveness. Current pre-operative radiographs allow visual estimation but not accurate measurement of lesion depth.

Purpose: Investigate the ability of ratio 'remaining/total dentin thickness' (RDT/TDT, as determined on pre-operative radiographs) to predict pulp exposure during excavation. Read More

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Viability of performing multiple 24-2 visual field examinations at the same clinical visit: the Frontloading Fields Study (FFS).

Am J Ophthalmol 2021 May 2. Epub 2021 May 2.

Centre for Eye Health, University of New South Wales, Kensington, NSW; School of Optometry and Vision Science, University of New South Wales, Kensington, NSW.

Purpose: To assess the viability in terms of time taken for testing and repeatability of frontloading (performing multiple perimetric examinations) in a single clinic visit.

Design: Reliability enhancement analysis.

Participants: 329 healthy, glaucoma suspect, and glaucoma subjects within a glaucoma clinic undergoing perimetric testing using SITA-Faster twice for each eye within the same session. Read More

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Panoramic Dental Radiography Image Enhancement Using Multiscale Mathematical Morphology.

Sensors (Basel) 2021 Apr 29;21(9). Epub 2021 Apr 29.

Department of Computer and Electronics, Universidade Federal do Espírito Santo, São Mateus, ES 29932-540, Brazil.

Panoramic dental radiography is one of the most used images of the different dental specialties. This radiography provides information about the anatomical structures of the teeth. The correct evaluation of these radiographs is associated with a good quality of the image obtained. Read More

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Photographic Misrepresentation on Instagram After Facial Cosmetic Surgery: Is Increased Photography Bias Associated With Greater User Engagement?

Aesthet Surg J 2021 May 4. Epub 2021 May 4.

Plastic surgeon in private practice in Chicago, IL.

Background: Before and after images are commonly used on Instagram to advertise aesthetic surgical treatments and are a powerful means of prospective patient engagement. Consistency between before and after images accurately demonstrating the postoperative result on Instagram, however, has not been systematically assessed.

Objectives: Our aim was to systematically assess facial cosmetic surgery before and after photography bias on Instagram. Read More

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A Novel Approach to Enhancement Linked Laser Asymmetric Keratectomy Using Semi-Cylindrical Ablation Pattern in Patients with Myopic Regression After Laser Refractive Surgery.

Clin Ophthalmol 2021 23;15:1751-1758. Epub 2021 Apr 23.

Woori Eye Clinic, Department of Ophthalmology, Yonsei University School of Medicine, Daejon, South Korea.

Purpose: We aimed to introduce a new technique to reduce regional asymmetry of corneal thickness by assessing its effectiveness in four patients with myopic regression after laser refractive surgery (LRS).

Patients And Methods: Four patients (four eyes) with myopic regression after LRS were included in this study. A new technique of enhancement with laser epithelial keratomileusis-linked laser asymmetric keratectomy using semi-cylindrical ablation pattern (E-LAK-SCAP) with full integration of the Vision-Up software for analyzing the corneal thickness deviation can be used to create central symmetry by blocking laser ablation on the thin cornea. Read More

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Attention reduces the burstiness of V1 neurons involved in attended target enhancement.

Eur J Neurosci 2021 May 1. Epub 2021 May 1.

School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China.

Attention-dependent reduction in the tendency for neurons to fire bursts (burstiness) is widely observed in the visual cortex. However, the underlying mechanism and the functional role of this phenomenon remain unclear. We recorded well-isolated single-unit activities in primary visual cortex (V1) from two primates (Macaca mulatta) while they performed a detection task engaging spatial attention with two levels of difficulty (hard/easy). Read More

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Transient perceptual enhancements resulting from selective shifts of exogenous attention in the central fovea.

Curr Biol 2021 Apr 26. Epub 2021 Apr 26.

Department of Brain and Cognitive Sciences, University of Rochester, Rochester, NY, USA; Department of Neuroscience, University of Rochester, Rochester, NY, USA; Center for Visual Science, University of Rochester, Rochester, NY, USA. Electronic address:

Exogenous attention, a powerful adaptive tool that quickly and involuntarily orients processing resources to salient stimuli, has traditionally been studied in the lower-resolution parafoveal and peripheral visual field. It is not known whether and how it operates across the 1° central fovea where visual resolution peaks. Here we investigated the dynamics of exogenous attention in the foveola. Read More

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Improvement of Vision and Ocular Surface Symptoms With a Scleral Lens After Microbial Keratitis.

Eye Contact Lens 2021 Apr 27. Epub 2021 Apr 27.

Clinical and Experimental Optometry Research Lab (CEORLab) (R.J.M.-d.-A., J.M.G.-M.), Center of Physics, University of Minho, Braga, Portugal; Department of Ophthalmology (C.M.), Singleton Hospital, Swansea Bay University Health Board, Swansea, United Kingdom; School of Ophthalmology and Optometry and Eye Hospital (C.M.), Wenzhou Medical University, Wenzhou, China; and Eye-Contact-Lens Research and Education (E.v.d.W.), Amsterdam, the Netherlands.

Abstract: A 38-year-old woman, previous daily disposable soft contact lens wearer, reported an episode of microbial keratitis positive for Pseudomonas aeruginosa 11 months before contacting the investigators. After acute treatment, she was left with a degree of opacity in the pupillary area, corneal scar, and an irregular corneal profile, with a best spectacle visual acuity of +0.48 logarithm of the minimum angle of resolution. Read More

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Improvement of the Diagnostic Performance of Facial Neuritis Using Contrast-Enhanced 3D T1 Black-Blood Imaging: Comparison with Contrast-Enhanced 3D T1-Spoiled Gradient-Echo Imaging.

J Clin Med 2021 Apr 24;10(9). Epub 2021 Apr 24.

Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University Medical Center, 7, Keunjaebong-gil, Hwaseong-si 18450, Gyeonggi-do, Korea.

This study aims to investigate the diagnostic ability of the contrast-enhanced 3D T1 black-blood fast spin-echo (T1 BB-FSE) sequence compared with the contrast-enhanced 3D T1-spoiled gradient-echo (CE-GRE) sequence in patients with facial neuritis. Forty-five patients with facial neuritis who underwent temporal bone MR imaging, including T1 BB-FSE and CE-GRE imaging, were examined. Two reviewers independently assessed the T1 BB-FSE and CE-GRE images in terms of diagnostic performance, and qualitative (diagnostic confidence and visual asymmetric enhancement) and quantitative analysis (contrast-enhancing lesion extent of the canalicular segment of the affected facial nerve (LEC) and the affected side-to-normal signal intensity ratio (rSI)). Read More

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Citicoline: A Candidate for Adjunct Treatment of Multiple Sclerosis.

Pharmaceuticals (Basel) 2021 Apr 2;14(4). Epub 2021 Apr 2.

Department of Neurology, Medical University of Lublin, 20-954 Lublin, Poland.

In remitting-relapsing multiple sclerosis (RR-MS), relapses are driven by autoreactive immune cells that enter the brain and spinal cord and damage myelin sheaths of axons in white and grey matter, whereas during remissions myelin is repaired by activated oligodendroglial cells. Disease-modifying therapies (DMTs) may either retard/attenuate myelin damage or promote/enhance/speed up myelin repair. Almost all currently approved DMTs inhibit myelin damage and are considerably toxic. Read More

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Drivers' Attention Strategies before Eyes-off-Road in Different Traffic Scenarios: Adaptation and Anticipation.

Int J Environ Res Public Health 2021 Apr 2;18(7). Epub 2021 Apr 2.

Key Laboratory for Automotive Transportation Safety Enhancement Technology of the Ministry of Communication, PRC, Chang'an University, Xi'an 710064, China.

The distribution of drivers' visual attention prior to diverting focus from the driving task is critical for safety. The object of this study is to investigate drivers' attention strategy before they occlude their vision for different durations under different driving scenarios. A total of 3 (scenarios) × 3 (durations) within-subjects design was applied. Read More

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Evaluation of Donor and Recipient Characteristics Involved in Descemet Stripping Automated Endothelial Keratoplasty Outcomes.

Front Med (Lausanne) 2021 12;8:605160. Epub 2021 Apr 12.

Multidisciplinary Department of Medical, Surgical, and Dental Sciences, University of Campania Luigi Vanvitelli, Naples, Italy.

To evaluate both donor and recipient features involved in visual acuity restoring and complication insurgence in eyes that have undergone Descemet stripping automated endothelial keratoplasty (DSAEK). In this retrospective study, charts of 111 eyes of 96 patients (mean age 70.25 ± 8. Read More

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Arterial spin labelling as a gadolinium-free alternative in the detection of prostate cancer.

Magn Reson Imaging 2021 Apr 24;80:33-38. Epub 2021 Apr 24.

University Dusseldorf, Medical Faculty, Department of Diagnostic and Interventional Radiology, D-40225 Dusseldorf, Germany. Electronic address:

Purpose: To determine the capability of Gadolinium-free arterial spin labelling (ASL) sequences as novel, contrast-free, non-invasive alternative perfusion imaging method to differentiate prostate cancer (PCA) from benign prostate tissue compared to conventional DCE MRI.

Methods: Thirty men with histologically confirmed PCA were included in this prospectively enrolled single center cohort study. All patients received multiparametric MRI (T2, DWI, DCE) at 3 T with additional ASL of the PCA lesion. Read More

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Medical needs related to the endoscopic technology and colonoscopy for colorectal cancer diagnosis.

BMC Cancer 2021 Apr 26;21(1):467. Epub 2021 Apr 26.

Jesús Usón Minimally Invasive Surgery Centre, Ctra. N-521, Km 41.8, 10071, Cáceres, Spain.

Background: The high incidence and mortality rate of colorectal cancer require new technologies to improve its early diagnosis. This study aims at extracting the medical needs related to the endoscopic technology and the colonoscopy procedure currently used for colorectal cancer diagnosis, essential for designing these demanded technologies.

Methods: Semi-structured interviews and an online survey were used. Read More

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Sawtooth patterns in flexural force curves of structural biological materials are not signatures of toughness enhancement: Part I.

J Mech Behav Biomed Mater 2021 Mar 5;119:104362. Epub 2021 Mar 5.

184 Hope Street, Providence, RI, 02912, USA. Electronic address:

Layered architectures are prevalent in tough biological composites, such as nacre and bone. Another example of a biological composite with layered architecture is the skeletal elements-called spicules-from the sponge Euplectella aspergillum. Based on the similarities between the architectures, it has been speculated that the spicules are also tough. Read More

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Boys-Specific Text-Comprehension Enhancement With Dual Visual-Auditory Text Presentation Among 12-14 Years-Old Students.

Front Psychol 2021 9;12:574685. Epub 2021 Apr 9.

Departamento de Psicología Evolutiva y Psicobiología, Universidad Internacional de la Rioja, Logroño, Spain.

Quality of language comprehension determines performance in all kinds of activities including academics. Processing of words initially develops as auditory, and gradually extends to visual as children learn to read. School failure is highly related to listening and reading comprehension problems. Read More

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Top-down control of attention under varying task loads.

Acta Psychol (Amst) 2021 May 20;216:103310. Epub 2021 Apr 20.

Department of Psychology, Chungnam National University, Daejeon, Republic of Korea. Electronic address:

The performance of a goal-directed task is often interrupted by task-irrelevant distractors. This distractor interference has well been demonstrated in a large body of studies employing the Eriksen flanker paradigm. A notable finding regarding this issue is that distractor interference is attenuated by increased perceptual load or the presence of non-target stimuli diluting distractors. Read More

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