Results 61 to 70 of about 14,230,890 (402)

Effects of lithium on electrical activity and potassium ion distribution in the vertebrate central nervous system [PDF]

open access: yes, 1983
Three different regions of the vertebrate central nervous system maintained in vitro (frog spinal cord, guinea pig olfactory cortex and hippocampus) have been used to investigate how Li+ influences membrane potential, membrane resistance, action ...
Aldenhoff   +45 more
core   +1 more source

The Characteristics of Action Potentials in Primo Vessels and the Effects of Acetylcholine Injection to the Action Potentials [PDF]

open access: yesEvidence-Based Complementary and Alternative Medicine, 2013
In a previous study, we found that Primo vessels generate different action potentials in smooth muscles, but this study compared the pulse shape to distinguish the two tissues. Thus, a more sophisticated extracellular experiment was performed in this study using an acetylcholine injection; we then observed changes in the amplitude, FWHM (full width at ...
Jaekwan Lim   +6 more
openaire   +2 more sources

Neural Substrates of Homing Pigeon Spatial Navigation: Results From Electrophysiology Studies

open access: yesFrontiers in Psychology, 2022
Over many centuries, the homing pigeon has been selectively bred for returning home from a distant location. As a result of this strong selective pressure, homing pigeons have developed an excellent spatial navigation system.
Gerald E. Hough, Gerald E. Hough
doaj   +1 more source

Electrophysiological Organization of the Eye of Aplysia [PDF]

open access: yes, 1969
The eye of Aplysia californica was studied by electrophysiological and histological methods. It has a central spheroidal lens which is surrounded by a retina composed of several thousand receptor cells which are replete with clear vesicles, pigmented ...
Jacklet, Jon W.
core   +1 more source

Intracellular recordings of action potentials by an extracellular nanoscale field-effect transistor

open access: yesNature Nanotechnology, 2011
The ability to make electrical measurements inside cells has led to many important advances in electrophysiology1-6. The patch clamp technique, in which a glass micropipette filled with electrolyte is inserted into a cell, offers both high signal-to ...
Xiaojie Duan   +8 more
semanticscholar   +1 more source

Electroesophagogram in gastroesophageal reflux disease with a new theory on the pathogenesis of its electric changes

open access: yesBMC Surgery, 2004
Background In view of the disturbed esophageal peristaltic activity and abnormal esophageal motility in gastroesophageal reflux disease, (GERD), we investigated the hypothesis that these changes result from a disordered myoelectric activity of the ...
Shafik Ismail   +3 more
doaj   +1 more source

Matrix Ernst Potentials and Orthogonal Symmetry for Heterotic String in Three Dimensions

open access: yes, 1997
A new matrix representation for low-energy limit of heterotic string theory reduced to three dimensions is considered. The pair of matrix Ernst Potentials uniquely connected with the coset matrix is derived.
ALFREDO HERRERA-AGUILAR   +4 more
core   +1 more source

Effects of guanidine on synaptic transmission in the spinal cord of the frog [PDF]

open access: yes, 1977
The effects of guanidine on motoneurons of the isolated frog spinal cord were studied by adding the drug to the solution bathing the cord during intracellular recording. Guanidine (5·10–4 M) did not alter the membrane potential of motoneurons.
A. K�hner   +19 more
core   +1 more source

MAN: Multi-Action Networks Learning [PDF]

open access: yesarXiv, 2022
Learning control policies with large discrete action spaces is a challenging problem in the field of reinforcement learning due to present inefficiencies in exploration. With high dimensional action spaces, there are a large number of potential actions in each individual dimension over which policies would be learned.
arxiv  

A Comparative Study of Cell Specific Effects of Systemic and Volatile Anesthetics on Identified Motor Neurons and Interneurons of Lymnaea stagnalis (L.), Both in the Isolated Brain and in Single Cell Culture

open access: yesFrontiers in Physiology, 2019
1. A comparative descriptive analysis of systemic (sodium pentobarbital, sodium thiopentone, ketamine) and volatile (halothane, isoflurane, enflurane) general anesthetics revealed important differences in the neuronal responses of identified motor ...
Hadi Fathi Moghadam   +6 more
doaj   +1 more source

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