Functional segregation of plural regions representing cardinal contours in cat primary visual cortex

The European Journal of Neuroscience
Gang Wang

Abstract

Our previous data based on an imaging study suggested that, in cat area 17, the representations of cardinal orientations overlap less than the representation of their nearby angles. The purpose of this study was to further investigate the underlying single-cell properties. Optical imaging was performed first to map the cortical regions corresponding to the four principal contours, the two cardinals and the two obliques. The cortical region activated by a principal orientation but not by the +10 degrees or -10 degrees neighbouring angles, namely the area with optically relative independent orientation selectivity (RIOS), was mapped together with the regions that overlapped with the +10 degrees and/or -10 degrees neighbouring angles (non-RIOS). Electrode penetrations were targeted to the RIOS and non-RIOS regions in each of the four orientations. A comparison between the RIOS and the non-RIOS regions documented a significantly higher percentage of cells with the orientation preference of the cardinal orientations in the cardinal RIOS region than that seen in the other regions. Additionally, the difference in the tuning width of cells between the RIOS and non-RIOS in the cardinal region was significantly larger than the difference...Continue Reading

References

Mar 1, 1977·Proceedings of the National Academy of Sciences of the United States of America·A G Leventhal, H V Hirsch
Jun 23, 1978·Brain Research·R J Mansfield, S F Ronner
Mar 26, 1976·Brain Research·B L FinlayS F Volman
Feb 1, 1991·Journal of Neuroscience Methods·E H Ratzlaff, A Grinvald
Apr 30, 1974·Experimental Brain Research·D Rose, C Blakemore
Mar 1, 1968·The Journal of Physiology·D H Hubel, T N Wiesel
Jan 1, 1982·Vision Research·R L De ValoisN Hepler
Jan 1, 1994·Journal of Neurophysiology·G C DeAngelisI Ohzawa
Jun 6, 1997·Science·P E MaldonadoT Bonhoeffer
Oct 23, 1997·The Journal of Comparative Neurology·S C RaoM Sur
Apr 16, 1998·Proceedings of the National Academy of Sciences of the United States of America·B Chapman, T Bonhoeffer
Apr 16, 1998·Proceedings of the National Academy of Sciences of the United States of America·D M CoppolaD Purves
Nov 3, 1998·Vision Research·F SengpielC Blakemore
May 16, 2001·Journal of Neurophysiology·M P SceniakR Shapley
Nov 9, 2002·Journal of Neurophysiology·James R CavanaughJ Anthony Movshon
Feb 5, 2003·Neuroscience Letters·Gang WangKazutomo Yunokuchi
Mar 4, 2003·Journal of Neurophysiology·Baowang LiRalph D Freeman
Feb 13, 2004·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Hirofumi OzekiHiromichi Sato
Sep 1, 1968·The Journal of Physiology·F W CampbellC Enroth-Cugell

❮ Previous
Next ❯

Citations

May 21, 2008·The European Journal of Neuroscience·Jérôme RibotAyako Ajima
Sep 1, 2007·Neuroreport·Midori NagaiGang Wang

❮ 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.