AI Article Synopsis
- A new cellular model of the primate retina has been created, taking into account the random arrangement of L and M cones and how their density changes with distance from the center of the retina.
- This model uses ganglion cell activity to simulate color images, focusing on luminance and R-G opponent channels, and successfully mirrors known characteristics of how we perceive both time and space visually.
- Additionally, it addresses complex features of vision like afterimage transitions and explains why variations in L/M cone ratios don't significantly affect our color perception.
Article Abstract
A cellular model of the primate retina has been developed. Unlike existing models, it incorporates spatial non-uniformities, such as the random arrangement of L and M cones, and the radial dilation with eccentricity. Based on a population of ganglion cell activities, colour-image representation is modelled with the luminance and the R-G opponent channels. The developed model reproduces experimentally known properties in temporal and spatial vision. Furthermore, spatio-temporally coupled properties such as transition from positive to negative phases in an afterimage, are recapped. In colour vision, the model can explain the insensitivity in our colour perception to the L/M cone ratio.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.visres.2005.08.031 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Home Visits and the Use of Routine and Emergency Postpartum Care Among Low-Income People: A Secondary Analysis of a Randomized Clinical Trial.
JAMA Netw Open
December 2024
Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, Massachusetts.
Importance: Access to appropriate postpartum care is essential for improving maternal health outcomes and promoting maternal health equity.
Objective: To analyze the impact of the Nurse-Family Partnership (NFP) home visiting program on use of routine and emergency postpartum care.
Design, Setting, And Participants: This study was a secondary analysis of a randomized clinical trial that enrolled eligible participants between 2016 and 2020 to receive NFP or usual care from a South Carolina Medicaid program.
Importance: Little is known about the spatial accessibility to dental clinics across the US.
Objective: To map the spatial accessibility of dental clinics nationally and to examine the characteristics of counties and US Census block groups with dental care shortage areas.
Design, Setting, And Participants: Cross-sectional study of US dental clinics in 2023 using data from the IQVIA national practitioners' database, which includes 205 762 active dentists.
Social Determinants of Health, Blood Pressure Classification, and Incident Stroke Among Chinese Adults.
JAMA Netw Open
December 2024
Hypertension Laboratory, Cardiovascular Disease Center of Guangdong Province, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China.
Importance: Although cumulative evidence suggests that higher blood pressure (BP) and a greater burden of social determinants of health (SDOH) are associated with an increased risk of stroke, few studies have examined whether SDOH burden modifies the association between BP and stroke risk.
Objective: To evaluate whether the association between BP classification and stroke risk differs by SDOH burden among Chinese adults.
Design, Setting, And Participants: In this cohort study, analyses were conducted among 90 850 participants in the prospective subcohort of the China Patient-Centered Evaluative Assessment of Cardiac Events Million Persons Project, with recruitment from January 1, 2016, to December 31, 2020.
Within-Hospital Price Gaps Across National Insurers.
JAMA Netw Open
December 2024
Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.
Importance: Commercial prices for hospital care are high and vary widely in the US. Employers and state policymakers are exploring reference-based pricing (RBP) to set their payment rates as multiples of Medicare prices; understanding the range of commercial price variation within a hospital is important for calculating the appropriate price targets that are effectively low to generate savings but also feasible and viable to local hospital markets.
Objective: To examine within-hospital maximum-to-minimum commercial hospital price gaps negotiated by 5 national insurers and estimate plan savings if the minimum prices within each hospital are used as new payment level.
Identification and Health Risks of an Emerging Means of Drug Use in Correctional Facilities.
JAMA Netw Open
December 2024
Department of Emergency Medicine, Emory University, Atlanta, Georgia.
Importance: Recreational use of drug-soaked paper strips (hereafter, strips) in correctional facilities poses a major public health risk owing to the diverse and potentially severe toxic effects of the substances they contain. Understanding the clinical manifestations and outcomes of exposure to these strips is important for developing effective management and prevention strategies.
Objective: To characterize the clinical manifestations, management, and outcomes of intoxication from strips in a correctional facility population, and to identify the specific substances present in these strips.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!