Results 41 to 50 of about 3,231,328 (345)

Optimal measurement of visual motion across spatial and temporal scales [PDF]

open access: yes, 2014
Sensory systems use limited resources to mediate the perception of a great variety of objects and events. Here a normative framework is presented for exploring how the problem of efficient allocation of resources can be solved in visual perception ...
A Gorban   +47 more
core   +1 more source

Visual pathway function and structure in Wolfram syndrome: Patient age, variation and progression [PDF]

open access: yes, 2018
Background/aimsTo report alterations in visual acuity and visual pathway structure over an interval of 1–3 years in a cohort of children, adolescents and young adults who have Wolfram syndrome (WFS) and to describe the range of disease severity evident ...
Al-Lozi, Amal   +6 more
core   +2 more sources

Retinoid isomerase inhibitors impair but do not block mammalian cone photoreceptor function [PDF]

open access: yes, 2018
Visual function in vertebrates critically depends on the continuous regeneration of visual pigments in rod and cone photoreceptors. RPE65 is a well-established retinoid isomerase in the pigment epithelium that regenerates rhodopsin during the rod visual ...
Angueyra, Juan M   +11 more
core   +1 more source

Robot eye-hand coordination learning by watching human demonstrations: a task function approximation approach

open access: yes, 2019
We present a robot eye-hand coordination learning method that can directly learn visual task specification by watching human demonstrations. Task specification is represented as a task function, which is learned using inverse reinforcement learning(IRL ...
Dehghan, Masood   +4 more
core   +1 more source

Visual scanning patterns and executive function in relation to facial emotion recognition in aging [PDF]

open access: yes, 2013
OBJECTIVE: The ability to perceive facial emotion varies with age. Relative to younger adults (YA), older adults (OA) are less accurate at identifying fear, anger, and sadness, and more accurate at identifying disgust.
Circelli, K. S.   +2 more
core   +1 more source

Motor deficits in schizophrenia quantified by nonlinear analysis of postural sway. [PDF]

open access: yes, 2012
Motor dysfunction is a consistently reported but understudied aspect of schizophrenia. Postural sway area was examined in individuals with schizophrenia under four conditions with different amounts of visual and proprioceptive feedback: eyes open or ...
Bolbecker, Amanda R.   +6 more
core   +3 more sources

Refinement and preliminary evaluation of two tablet-based tests of real-world visual function [PDF]

open access: yes, 2019
PURPOSE: To describe, refine, evaluate, and provide normative control data for two freely available tablet-based tests of real-world visual function, using a cohort of young, normally-sighted adults.
Bi, W.   +6 more
core   +2 more sources

The anti‐CRISPR protein AcrIE8.1 inhibits the type I‐E CRISPR‐Cas system by directly binding to the Cascade subunit Cas11

open access: yesFEBS Letters, EarlyView.
In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley   +1 more source

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

open access: yesFEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino   +7 more
wiley   +1 more source

Comparison between self-reported quality of vision and visual acuity in a low-income elderly population in the city of São Paulo [PDF]

open access: yes, 2006
PURPOSE: Self-reported visual function questionnaires are becoming more common in clinical research. The purpose of this study is to evaluate and correlate self-reported visual function assessed by a visual function questionnaire with visual acuity ...
Belfort, Rubens Junior   +3 more
core   +4 more sources

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