The SCHEIE Visual Field Grading System

The SCHEIE Visual Field Grading System

OBJECTIVE No method of grading visual field (VF) defects has been widely accepted throughout the glaucoma community. The SCHEIE (Systematic Classification of Humphrey visual fields-Easy Interpretation and Evaluation) grading system for glaucomatous visual fields was created to convey qualitative and quantitative information regarding visual field defects in an objective, reproducible, and easil...

The ABCD Grading System

Local Field Potential in the Visual System

Biophysical Origin It is thought that the main contribution to the local field potential (LFP) derives from synchronous activation of neurons in the surrounding cortex. The LFP represents the sum over typically many thousands of local electrical fields that are generated within individual neurons. When a neuron is activated by the arrival of an excitatory postsynaptic potential on its dendrite,...

Visual grading regression: analysing data from visual grading experiments with regression models.

For visual grading experiments, which are an easy and increasingly popular way of studying image quality, hitherto used data analysis methods are often inadequate. Visual grading analysis makes assumptions that are not statistically appropriate for ordinal data, and visual grading characteristic curves are difficult to apply in more complex experimental designs. The approach proposed in this pa...

The Visual Transitivity System in Two ELT Books Series

The present study aims to investigate the system of the visual transitivity by analyzing the images of American English file (2014) and Cutting edge (2005) series based on Halliday’s (1976) systemic functional linguistics and Kress and van leuween’s (1997-2006) social semiotics. The system of visual transitivity refers to a type of process which determines how represented participants are label...