PMID: 2487645Jan 1, 1989Paper

Vernier acuities of neurons in area 17 of cat visual cortex: their relation to stimulus length and velocity, orientation selectivity, and receptive-field structure

Visual Neuroscience
N V Swindale, M Cynader

Abstract

The sensitivity of neurons in area 17 of the cat's visual cortex to vernier offset was expressed as the percentage reduction in response caused by the introduction of a given offset into a bar stimulus moving across the receptive field. There was a wide variation in sensitivity: in some cells response could be halved by an offset equal to a fifth receptive-field width (defined as twice the standard deviation of a Gaussian curve fitted to the response profile), while other cells showed no sensitivity. The highest absolute sensitivities of complex and simple cells were similar, although most cells with poor sensitivity were complex. Sensitivity was largely unaffected by changes in stimulus velocity and stimulus length, although there was a tendency for sensitivity to increase with decreasing bar length. Comparisons of orientation tuning curves with vernier tuning curves showed that the response to a vernier stimulus approximated the response to a single bar of the same overall length and an orientation equal to that of a line joining the midpoints of each bar. This was true for a wide range of sensitivity values. Vernier sensitivity was correlated with a measure of length summation H, which is positive when there is net facilitat...Continue Reading

References

Feb 23, 1978·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·D Marr, H K Nishihara
Jan 1, 1977·Vision Research·G Westheimer, S P McKee
Jun 1, 1986·Journal of Neurophysiology·C L Baker, M S Cynader
Feb 13, 1986·Nature·N V Swindale, M S Cynader
Sep 1, 1985·Journal of Neurophysiology·I OhzawaR D Freeman
Sep 1, 1985·Journal of the Optical Society of America. A, Optics and Image Science·A BradleyR D Freeman
Nov 1, 1967·The Journal of Physiology·H B BarlowJ D Pettigrew
Jul 27, 1982·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·C KochV Torre
Jan 1, 1983·Vision Research·R J WattR M Ward
Jan 1, 1984·Vision Research·R A Schumer, J A Movshon
Jul 1, 1984·Journal of the Optical Society of America. A, Optics and Image Science·W S Geisler
Apr 1, 1983·The Journal of Physiology·P Hammond, D M MacKay
Jul 15, 1982·Nature·D M Levi, S Klein
Sep 1, 1968·The Journal of Physiology·F W CampbellC Enroth-Cugell

❮ Previous
Next ❯

Citations

Sep 1, 1993·Visual Neuroscience·S CelebriniM Imbert
Sep 14, 2007·Current Eye Research·Kevin N ShethGrant T Liu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

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.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

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.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.