The effects of a luminance-modulated background on the grating-evoked cortical potential in the cat

Visual Neuroscience
J A Baro, S Lehmkuhle

Abstract

Averaged grating-evoked cortical potentials were recorded from area 17 of awake cats. Peak latency of early components of the visual-evoked potential (VEP) response to stimulus onset increased as a function of spatial frequency, while amplitude tended to be largest at intermediate spatial frequencies. Latency increased and amplitude generally decreased to lower spatial-frequency stimuli (less than 0.25 cycle/deg) in the presence of a uniform flickering field (UFF). The UFF had a relatively small or opposite effect on peak latency and amplitude for higher spatial-frequency stimuli (greater than 0.50 cycle/deg). The VEP response to stimulus offset was present only at low spatial frequencies and was virtually eliminated by the presence of the UFF. The effects were similar whether the target and UFF background were simultaneously presented or briefly separated; however, the UFF had no effect when the two were spatially separated. The effects of the UFF background on VEP onset response increased with increasing temporal frequency from 2-8 Hz; offset responses were affected similarly at all temporal frequencies. These effects are similar to those observed in humans and suggest that two spatio-temporally tuned mechanisms contribute to...Continue Reading

References

Jan 1, 1979·Vision Research·A Vassilev, D Strashimirov
Jan 1, 1977·Vision Research·D M Parker, E A Salzen
Jan 1, 1978·Vision Research·R S Harwerth, D M Levi
Jan 1, 1976·Vision Research·U LuppW Wolf
Jan 1, 1987·Perception·D R Badcock, E Sevdalis
Jan 1, 1987·Vision Research·A Vassilev, V Stomonyakov
Feb 1, 1983·Electroencephalography and Clinical Neurophysiology·S J O'ConnorM S Hale
Aug 1, 1983·Electroencephalography and Clinical Neurophysiology·G T PlantK Durden
Dec 1, 1984·The Journal of Physiology·A M Derrington, P Lennie
Jan 1, 1983·Vision Research·M Green
Jan 1, 1983·Vision Research·A VassilevD Mitov
Sep 1, 1982·The Journal of Physiology·E Kaplan, R M Shapley
Jan 1, 1981·Vision Research·B BreitmeyerR S Harwerth

❮ Previous
Next ❯

Citations

Apr 8, 1993·The New England Journal of Medicine·S LehmkuhleJ A Baro
Feb 27, 2021·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Felix HeverAnuradha Sharma

❮ 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.