PMID: 6984867Jan 1, 1982Paper

Patterns of impulses discharged by slowly adapting cutaneous mechanoreceptive units in the warty skin of frogs in response to prolonged displacements

The Japanese Journal of Physiology
H Ogawa, Y Yamashita

Abstract

A standard indentation (500 microns, 3 sec) was applied 50 times on the receptive field, and responses were successfully recorded from 38 of the 105 slowly adapting cutaneous afferent (SA) units innervating the wart-bearing plantar surface of the frog hind foot. The SA units discharged a small number of spikes with a time course of at least two time constants (0.16-0.39 and 0.72-3.26), and did not produce a maintained discharge in almost all cases. An ensemble of interspike intervals, (Xt(1),Xt(2),..., Xt(50)), adjacent to some time points after the onset of stimulation (t = 500 and 1,000 msec) over 50 trials of stimulations, was chosen for statistical analysis, instead of a series of the successive interspike intervals in a steady state; the interspike interval histograms were skewed with a large coefficient of variation and gave a good fit to a gamma distribution, and joint interval diagrams around these time points showed an independence of successive interspike intervals. A similar finding was obtained from statistical analysis of a steady phase of discharges in an exceptional case. In conclusion, the SA units innervating the warty skin of the frog hind foot were similar in discharge pattern to the cutaneous SA type I units...Continue Reading

Citations

Feb 1, 1986·Pflügers Archiv : European journal of physiology·Y YamashitaK Taniguchi
Nov 1, 1985·Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology·R E Watts, A S French

❮ 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.