Define Synaptic transmission. Synaptic transmission synonyms, Synaptic transmission pronunciation, Synaptic transmission translation, English dictionary definition of Synaptic transmission. n. the transmission of a nerve impulse across a synapse. Random
Transmission of Nerve Impulse at SynapseShikha Sharma
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The post-fibre is, in each case, the largest of the motor axons which leave the ganglion in the third root. Fig. 1 shows an example of nerve-impulse transmission across such a synapse. The pre-junctional axon was stimulated with external electrodes; and its action potential, recorded intra...
3. The passage of a nerve impulse across an anatomic cleft, as in autonomic or central nervous system synapses and at neuromuscular junctions, by activation of a specific chemical mediator that stimulates or inhibits the structure across the synapse. 4. In general, passage of energy through a...
triggered only when the resultant membrane potential reaches or exceeds the threshold. Chemical synaptic transmission is subject to modulation by intrinsic andextrinsic factors, including frequency and pattern of AP firing, which can either facilitate or depress the transmission across any given synapse. ...
. This synaptic structure warrants that signal transmission occurs rapidly, within ~1 ms of a presynaptic action potential, that a vesicular fusion event reliably leads to postsynaptic receptor activation, and that intercellular signaling is restricted to the two neurons participating in the synapse....
In an electrical synapse, or gap junction, the presynaptic and postsynaptic membranes are partially fused. This allows the action potential to cross from the membrane of one neuron to the next without the intervention of a neurotransmitter. Electrical synapses often lack the directional specificity of...
Cells of organized tissues are interconnected at junctions that provide pathways for direct flow of matter between cell interiors (Loewenstein, 1966, 1979; Furshpan and Potter, 1968). Such permeable junctions are present throughout the phylogenetic scale
Ultrastructural localization of D2 receptor-like immunoreactivity in midbrain dopamine neurons and their striatal targets. J. Neurosci. 14, 88–106 (1994). CAS PubMed PubMed Central Google Scholar Uchigashima, M., Ohtsuka, T., Kobayashi, K. & Watanabe, M. Dopamine synapse is a neuroligin...