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Neurotransmitter Related Links


Related Links


About Neurotransmitters

- Nervous System 101


Neurotransmitter Chart



- Some Neurotransmitters of Special Mention
Neurotransmitters of Special Mention


Some neurotransmitters of special mention


Used at most fast excitatory synapses in the brain and spinal cord - and also at most synapses that are "modifiable", i.e. capable of increasing or decreasing in strength. (thought to be involved in the brain's main memory-storage).

Excessive GLUTAMATE in the synapse can lead to excitoxicity causing cell death -the reason why monosodium glutamate (MSG), so commonly added to foods today to fool the brain into thinking the food tastes better, can cause nerve damage.

MSG –And other forms of neurotoxic free glutamic acid


Activates skeletal muscles - commonly secreted at neuromuscular joints (gaps connecting motor nerves to muscle cells) where it stimulates muscles to contract. Of interest, arrow tips poisoned with curare blocks transmission at these synapses, causing paralysis

At other kinds of junctions, typically produces an inhibitory postsynaptic potential

Contributes to the regulation of attention, arousal, and memory

Ach receptors stimulated by nicotine; nerve gas attacks Ach system


GABA (gamma aminobutyric acid)

Usually an inhibitory transmitter between brain neurons

Many sedative/tranquilizing drugs act by enhancing the effects of GABA in the brain –GLYCINE is the inhibitory neurotransmitter in the spinal cord.


Controls smooth, seamless, voluntary movement

Controls reward system/pleasurable emotions

Decreased levels associated with Parkinson's disease

Over-activity in dopamine synapses associated with schizophrenia, cocaine, and amphetamines


Involved in regulation of sleep/wakefulness, appetite, aggression/mood, temperature, behaviour, memory/learning

Also functions to regulate muscle contraction, cardiovascular system and endocrine system

~90% produced/found in intestine, the rest in CNS neurons

Low levels associated with depression – antidepressant drugs, such as Prozac, target SEROTONIN levels;

High levels associated with obsessive-compulsive disorder (OCD)


Responsible for transmission of pain - from certain sensory neurons to the central nervous system (CNS).


Resemble opiate drugs in structure and effects

Contribute to pain relief and to “feel good”emotions

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