Difference between revisions of "Neurotransmitter"
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(there are multiple) |
(The neurotransmitter article only mentions one? Will expand later.) |
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| Line 9: | Line 9: | ||
*after release the chemical must become inactive | *after release the chemical must become inactive | ||
*when applied manually to post-synaptic [[membrane]] the chemical must have the same biological effect that it did when released from a neuron | *when applied manually to post-synaptic [[membrane]] the chemical must have the same biological effect that it did when released from a neuron | ||
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| + | == Examples of Common Neurotransmitters == | ||
| + | *Acetylcholine | ||
| + | *Serotonin | ||
| + | *Glutamate | ||
| + | *GABA | ||
[[category:neuroscience]] | [[category:neuroscience]] | ||
Revision as of 02:31, October 23, 2008
Neurotransmitters are chemicals in the nervous system that communicate information between neurons. Neurotransmitters are released from a presynaptic terminal of one neuron and cross the synaptic cleft (the space between neurons) before binding to a receptor on another neuron. Austrian scientist Otto Loewi discovered the first neurotransmitter, acetylcholine, in 1921 while experimenting on frogs.
Neurotransmitter Guidelines
To be considered a neurotransmitter, a chemical must meet most or all of the following criteria:
- it must be manufactured within a neuron
- it must be found in a neuron
- it must be released when a neuron is stimulated
- when it is released it must bind to a receptor and cause a biological change
- after release the chemical must become inactive
- when applied manually to post-synaptic membrane the chemical must have the same biological effect that it did when released from a neuron
Examples of Common Neurotransmitters
- Acetylcholine
- Serotonin
- Glutamate
- GABA