Results 41 to 50 of about 6,877,005 (268)

The satiety signaling neuropeptide perisulfakinin inhibits the activity of central neurons promoting general activity

open access: yesFrontiers in Cellular Neuroscience, 2007
The metabolic state is one of the determinants of the general activity level. Satiety is related to resting or sleep whereas hunger correlates to wakefulness and activity.
Dieter Wicher   +5 more
doaj   +1 more source

Tuning synaptic transmission in the hippocampus by stress: The CRH system

open access: yesFrontiers in Cellular Neuroscience, 2012
To enhance survival, an organism needs to remember--and learn from--threatening or stressful events. This fact necessitates the presence of mechanisms by which stress can influence synaptic transmission in brain regions, such as hippocampus, that ...
Yuncai eChen   +3 more
doaj   +1 more source

Diverse in- and output polarities and high complexity of local synaptic and non-synaptic signalling within a chemically defined class of peptidergic Drosophila neurons

open access: yesFrontiers in Neural Circuits, 2013
Peptidergic neurons are not easily integrated into current connectomics concepts, since their peptide messages can be distributed via non-synaptic paracrine signalling or volume transmission.
Gergely eKarsai   +11 more
doaj   +1 more source

Extrasynaptic Neurotransmission Mediated by Exocytosis and Diffusive Release of Transmitter Substances

open access: yesFrontiers in Synaptic Neuroscience, 2018
This review article deals with the mechanisms of extrasynaptic release of transmitter substances, namely the release from the soma, axon and dendrites in the absence of postsynaptic counterparts.
Elaine Del-Bel, Francisco F. De-Miguel
doaj   +1 more source

Dopaminergic transmission in the rat retina: evidence for volume transmission

open access: yesJournal of Chemical Neuroanatomy, 1996
The study was designed to determine whether dopaminergic neurotransmission in the retina can operate via volume transmission. In double immunolabelling experiments, a mismatch as well as a match was demonstrated in the rat retina between tyrosine hydroxylase (TH) and dopamine (DA) immunoreactive (ir) terminals and cell bodies and dopamine D2 receptor ...
B, Bjelke   +10 more
openaire   +2 more sources

The Neurobiology of Imagination: Possible Role of Interaction-Dominant Dynamics and Default Mode Network

open access: yesFrontiers in Psychology, 2013
This work aims at presenting some hypotheses about the potential neurobiological substrate of imagery and imagination. For the present purposes, we will define imagery as the production of mental images associated with previous percepts, and imagination ...
Luigi Francesco Agnati   +4 more
doaj   +1 more source

Is There Volume Transmission Along Extracellular Fluid Pathways Corresponding to the Acupuncture Meridians?

open access: yesInnovations in Acupuncture and Medicine, 2016
Volume transmission is a new major communication signaling via extracellular fluid (interstitial fluid) pathways. It was proposed by the current authors that such pathways can explain the meridian phenomena and acupuncture effects. To investigate whether
Wei-Bo Zhang   +6 more
semanticscholar   +1 more source

Selective WGA uptake in the hippocampus from the locus coeruleus of DBH-WGA transgenic mice

open access: yesFrontiers in Behavioral Neuroscience, 2012
We generated transgenic mice in which a transsynaptic tracer, wheat germ agglutinin (WGA), was specifically expressed in the locus coeruleus neurons under the control of the dopamine-β-hydroxylase gene promoter. WGA protein was produced in more than 95%
Susan G eWalling   +4 more
doaj   +1 more source

Multi-objective optimization model of transmission error of nonlinear dynamic load of double helical gears

open access: yesNonlinear Engineering, 2023
In order to address the impact of reduced transmission stability and reliability caused by volume reduction on the quality of gear transmission, this article proposes a multi-objective optimization model for nonlinear dynamic load transmission errors of ...
Yao Xingling
doaj   +1 more source

A geographic routing protocol based on trunk line in VANETs

open access: yesDigital Communications and Networks, 2021
A Trunk Line Based Geographic Routing(TLBGR) protocol in Vehicular Ad-hoc Networks (VANETs) is proposed in this paper to solve the problem of data acquisition in the traditional trunk coordinated control system.
Chen Chen   +5 more
doaj   +1 more source

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