![]() ![]() There are many different neurotransmitters, such as acetylcholine, serotonin, dopamine, GABA, adrenaline, noradrenaline, glutamate, and norepinephrine to name a few. The stimulated neurons can then generate their own signals that travel to and stimulate yet other neurons to which they are connected, creating a network of neurons that perform a specific brain function.Īnother way neurons communicate with each other is through chemical messengers called neurotransmitters. The action potential of a single neuron is like a lightning bolt that can stimulate other neurons. A piece of brain tissue the size of a grain of sand contains 100,000 neurons and 1 billion synapses, all communicating with one another.Ī neuron’s main job is to generate an electrical signal called an “action potential” which it does if sufficiently “excited” by other neurons. Multiplying 100 billion neurons times 40,000 synapses is equivalent to the brain having more connections in it than there are stars in the universe. It is estimated to have over 100 billion neurons (also called nerve cells or brain cells), which is about the number of stars in the Milky Way Galaxy.Įach neuron is connected to other neurons by up to 40,000 individual connections (called synapses) between cells. Your brain is the most complex, mind-blowing organ in the universe. ![]()
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