PMID: 3751524Jun 1, 1986Paper

Visual acuity measurement using evoked potentials and fast Fourier transform

Acta Ophthalmologica
P Furuskog, P Wanger

Abstract

Visual evoked cortical potentials (VECP) were recorded from 10 subjects with normal visual acuity (VA) 1.0. Reversing square-wave gratings of 16 different spatial frequencies were used as stimuli. In all 10 subjects significant increase in power at the stimulation frequency was observed in the Fourier spectrum. The VA, calculated from the Fourier spectra, ranged from 0.4 to 1.0. The described method for VA measurement is entirely objective, and the examination can be performed very rapidly and conveniently with the aid of a computer. However, the results indicate that the reliability of the measurement in individual cases may be doubtful.

References

Nov 15, 1978·Experimental Brain Research·C W TylerK Nakayama
Nov 1, 1985·Electroencephalography and Clinical Neurophysiology·A M Norcia, C W Tyler
Jun 1, 1985·American Journal of Optometry and Physiological Optics·J E FaganR L Yolton
Jan 1, 1985·Vision Research·A M Norcia, C W Tyler

❮ Previous
Next ❯

Citations

Nov 1, 1993·The International Journal of Neuroscience·K C ApaydinY Oğuz
Apr 24, 2001·Journal of Neuro-ophthalmology : the Official Journal of the North American Neuro-Ophthalmology Society·A NakamuraY Wakami
Sep 1, 1990·Documenta Ophthalmologica. Advances in Ophthalmology·S A ChenD Z Wu
Jun 4, 2020·Documenta Ophthalmologica. Advances in Ophthalmology·Ruth HamiltonDorothy A Thompson
Oct 21, 2000·Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus·C A WestallJ R Buncic

❮ 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.

Related Papers

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
J PatelD G Kelly
Documenta Ophthalmologica. Advances in Ophthalmology
H TomodaS C Toleikis
© 2021 Meta ULC. All rights reserved