PMID: 5918061Aug 1, 1966

Decremental and incremental visual thresholds

The Journal of Physiology
A D Short


1. Extrafoveal decremental and incremental visual thresholds have been measured with a circular test-object of 57' diameter, an exposure time of 0.1 sec and background luminance ranging from 2.5 to 7.3 log. quanta (equivalent to 507 nm) per second per square degree at the cornea.2. The decremental threshold is lower than the incremental threshold by factors up to 0.4 log. unit when the background luminance is low; and the two thresholds are virtually the same when the background luminance is high.


Mar 1, 1984·Perception & Psychophysics·L B StelmachV Di Lollo
Jan 1, 1989·Vision Research·B A DosherG Sperling
Jan 1, 1989·Vision Research·R W BowenV C Smith
Jan 1, 1983·Vision Research·G E Legge, D Kersten
Oct 2, 2001·Perception & Psychophysics·S S ShimozakiM P Eckstein
Jun 17, 2014·Vision Research·Andrew E Silva, Charles Chubb
Jul 17, 1998·Vision Research·A J Vingrys, L E Mahon
Jun 6, 2000·Vision Research·P J DeMarcoT J Purkiss
Jun 21, 2016·Vision Research·Zahide Pamir, Huseyin Boyaci
Jan 1, 1971·The Journal of General Psychology·T M NelsonR J Ball
May 29, 2015·PLoS Computational Biology·Emily A Cooper, Anthony M Norcia
Mar 1, 1991·Visual Neuroscience·P J DeMarco, M K Powers
Sep 4, 2015·Journal of Neurophysiology·Yaoguang JiangVivien A Casagrande
Apr 1, 1992·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·C W TylerL Liu
Nov 1, 1978·Journal of the Optical Society of America·D H Kelly, R E Savoie
Mar 1, 1985·Journal of the Optical Society of America. A, Optics and Image Science·P ZuidemaJ J Koenderink
Apr 1, 1983·Journal of the Optical Society of America·W H Ehrenstein, L Spillmann
Feb 4, 2021·Cell Reports·Hamed Rahimi-NasrabadiJose-Manuel Alonso

Related Concepts

Light Adaptation
Electrophysiology (Science)

Trending Feeds


Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Alzheimer's Disease: MS4A

Variants within the membrane-spanning 4-domains subfamily A (MS4A) gene cluster have recently been implicated in Alzheimer's disease in genome-wide association studies. Here is the latest research on Alzheimer's disease and MS4A.

Pediculosis pubis

Pediculosis pubis is a disease caused by a parasitic insect known as Pthirus pubis, which infests human pubic hair, as well as other areas with hair including eye lashes. Here is the latest research.

Rh Isoimmunization

Rh isoimmunization is a potentially preventable condition that occasionally is associated with significant perinatal morbidity or mortality. Discover the latest research on Rh Isoimmunization here.

Genetic Screens in iPSC-derived Brain Cells

Genetic screening is a critical tool that can be employed to define and understand gene function and interaction. This feed focuses on genetic screens conducted using induced pluripotent stem cell (iPSC)-derived brain cells. It also follows CRISPR-Cas9 approaches to generating genetic mutants as a means of understanding the effect of genetics on phenotype.

Enzyme Evolution

This feed focuses on molecular models of enzyme evolution and new approaches (such as adaptive laboratory evolution) to metabolic engineering of microorganisms. Here is the latest research.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Pharmacology of Proteinopathies

This feed focuses on the pharmacology of proteinopathies - diseases in which proteins abnormally aggregate (i.e. Alzheimer’s, Parkinson’s, etc.). Discover the latest research in this field with this feed.

Alignment-free Sequence Analysis Tools

Alignment-free sequence analyses have been applied to problems ranging from whole-genome phylogeny to the classification of protein families, identification of horizontally transferred genes, and detection of recombined sequences. Here is the latest research.