presynaptic
- adjective
- /ˌpriːsɪˈnæptɪk/
- Specialized
- In chemical neurotransmission, the presynaptic neuron releases neurotransmitters into the synaptic cleft.
- presynaptic function
- presynaptic Ca2+ influx
- presynaptic Ca2
Examples
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The fact that we see considerable heterogeneity in the local presynaptic abundance of STIM1-RFP suggests that additional local factors may, in turn, control the localization of STIM1 in presynaptic terminals.
Academic text (2016) -
Based on the hypothesis that riluzole may be a presynaptic modulator of the glutamate transmission system, research activities have lately been directed at a possible effect of riluzole on motor neuron cells.
Academic text (2000) -
And because of that effect, it's called presynaptic inhibition.
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And now we can understand that kind of a polymorphism in how much presynaptic glutamate gets released.
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What you very often see is one of the neurotransmitters will exclusively work on a presynaptic autoreceptor.
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And those receptors, some fraction of them are specific for the ligand that the presynaptic cell releases.
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Synaptic delay means the time it takes for activation on the presynaptic side to reach the postsynaptic side.
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We found the largest fraction of presynaptic cells in primary (7,723 ± 2,124 cells, or 25%) and secondary visual areas.
Academic text (2017) -
Presynaptic cells were mapped onto brain regions as defined by a mouse brain atlas (Franklin and Paxinos, 2012) (Figure 1C).
Academic text (2017) -
There are synaptic vesicles and a presynaptic darkly stained region of the cell membrane along the region of the outer hair cell involved in the synapse.
Academic text (1998)
Surface Forms
Morphology
Etymology
Presynaptic breaks into pre- meaning 'before' and synapse, a word that means 'joining' and appears in words like synchronize where 'syn-' means 'together'. So presynaptic names the part of a nerve cell that comes 'before the joining' and sends the signal into the synapse.