Spatial and temporal frequency selectivity of cells in area 21a of the cat

The Journal of Physiology
J W Morley, R M Vickery

Abstract

1. The spatial and temporal response properties of single cells in area 21a of the anaesthetized cat were assessed using drifting sinusoidal gratings presented at the optimum orientation for each cell. 2. Responses to sinusoidal gratings were dominated by an elevation of the mean discharge, with a relatively small modulated component at the temporal frequency of grating drift. The relative modulation ratio for the majority of cells was less than 1, similar to complex cells in the striate cortex. 3. Of those cells responsive to stimulation with sinusoidal gratings, 94% displayed spatial bandpass characteristics. Values derived from spatial frequency tuning curves were: mean optimum spatial frequency, 0.26 cycles deg-1; mean spatial resolution, 0.86 cycles deg-1; mean spatial bandwidth, 1.8 octaves; and mean normalized bandwidth, 1.3. Two cells (6%) displayed spatial low-pass characteristics. 4. Approximately half our sample of cells (44%) displayed temporal low-pass tuning, while 35% displayed temporal bandpass characteristics. The mean optimum temporal frequency of bandpass cells was 3.3 Hz and the mean temporal bandwidth 1.9 octaves. The remaining cells were classified as temporal broadband (17%) and temporal high-pass (4%). 5...Continue Reading

References

Jul 21, 1978·Science·H M Eggers, C Blakemore
Oct 1, 1978·The Journal of Physiology·J A MovshonD J Tolhurst
Oct 1, 1978·The Journal of Physiology·J A MovshonD J Tolhurst
Aug 1, 1975·The Journal of Physiology·J A Movshon
Jan 12, 1988·Brain Research·K MizobeK Toyama
Sep 1, 1972·Medical & Biological Engineering·E G Merrill, A Ainsworth
Oct 14, 1981·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·D J Tolhurst, I D Thompson
Oct 10, 1984·The Journal of Comparative Neurology·L L Symonds, A C Rosenquist
Jan 14, 1982·Brain Research·J DuysensF E De Zegher
Jun 1, 1981·Journal of Neurophysiology·G A OrbanH Maes
Sep 1, 1980·The Journal of Comparative Neurology·R J Tusa, L A Palmer
Jan 1, 1993·Visual Neuroscience·B DreherW Burke

❮ Previous
Next ❯

Citations

Apr 14, 2007·Experimental Brain Research·Wioletta J WaleszczykGyörgy Benedek
Oct 23, 1997·Neuroreport·R M Vickery, J W Morley
Aug 10, 1999·Neuroreport·J W Morley, R M Vickery
Dec 16, 1998·The Journal of Physiology·R M Vickery, J W Morley
Feb 16, 2002·Brazilian Journal of Medical and Biological Research = Revista Brasileira De Pesquisas Médicas E Biológicas·M L B Simas, N A Santos
Aug 13, 2002·Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism·Noam HarelSeong-Gi Kim
May 19, 2006·Neuroreport·Christoph Kayser, Peter König
Mar 29, 2008·The European Journal of Neuroscience·Attila NagyGyörgy Benedek
Aug 14, 2019·Cerebral Cortex·Bruno Oliveira Ferreira de SouzaChristian Casanova
Sep 10, 2005·Cerebral Cortex·Chang'an A Zhan, Curtis L Baker
Apr 16, 2020·Vision·Nelson CortesChristian Casanova

❮ 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.