Expansion of the ipsilateral visual corticotectal projection in hamsters subjected to partial lesions of the visual cortex during infancy: anatomical experiments

The Journal of Comparative Neurology
R W Rhoades

Abstract

Electrophysiological methods were employed to determine whether or not partial visual cortical lesions in neonatal (7--11-day) hamster produced large scotomas in the cortical visual representation. In cases where such scotomas were present electrophoretic deposits of radioactive amino acids in the visually responsive "cortical remnant" of the damaged hemisphere resulted in labelling throughout the lower portion of the stratum griseum superficiale and the stratum opticum of the ipsilateral superior colliculus. No differential labeling of the part of the colliculus which was topographically matched with the remaining visual representation in the cortical remnant was observed. In normal hamsters relatively localized, visual cortical deposits of radioactive amino acids resulted in superficial layer labeling only in portions of the colliculus which corresponded to the locus of the cortical deposit. In a similar fashion, small lesions at physiologically defined loci in the cortical remnant produced degeneration throughout most of the superficial tectal laminae, but a more restricted "focus" of denser degeneration was also visible in these cases. The position of this focus in the colliculus for a given cortical lesion varied with the ...Continue Reading

References

Apr 26, 1977·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·D H HubelS LeVay
Feb 9, 1979·Brain Research·B E Stein, S B Edwards
Jun 1, 1979·The Journal of Comparative Neurology·D O Frost, G E Schneider
Jan 1, 1977·Vision Research·C M Cicerone, D G Green
Nov 15, 1978·Experimental Brain Research·L S JenJ Boles
Feb 15, 1979·The Journal of Comparative Neurology·R L Meyer
Aug 15, 1976·The Journal of Comparative Neurology·Y C Tiao, C Blakemore
Aug 15, 1976·The Journal of Comparative Neurology·Y C Tiao, C Blakemore
Aug 6, 1976·Brain Research·M J Mustari, R D Lund
Nov 7, 1975·Brain Research·R L Levine, M Jacobson
Nov 25, 1975·The Journal of Comparative Neurology·V S Caviness
Jan 1, 1976·Journal of Neurophysiology·U C Dräger, D H Hubel
Aug 1, 1973·Experimental Neurology·R L Meyer, R W Sperry
Jan 1, 1971·Vision Research·R Fernald, R Chase
Aug 1, 1966·The Journal of Comparative Neurology·R SiminoffL Kruger
Apr 1, 1954·The Journal of Comparative Neurology·W J NAUTA, V M BUCHER
Aug 15, 1979·The Journal of Comparative Neurology·L M Chalupa, R W Rhoades
Jun 1, 1947·The Journal of Comparative Neurology·W J S KRIEG

❮ Previous
Next ❯

Citations

Jan 1, 1989·Progress in Neurobiology·B Kolb, I Q Whishaw
Apr 10, 1982·The Journal of Comparative Neurology·R Lent
Dec 1, 1984·The Journal of Comparative Neurology·G M Sachs, G E Schneider
Aug 15, 1990·The Journal of Comparative Neurology·A R Harvey, D R Worthington

❮ 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.