![]() ![]() However, when a stimulus comes along (like stubbing your toe, or hearing your name being called), it causes the neuron to take in more positive ions, and the neuron becomes more positively charged. A neuron at rest has a negative charge of approximately -70 millivolts (mV) of electricity. When a neuron is at rest, the cell body, or soma, of the neuron is negatively charged relative to the outside of the neuron. ![]() Ions move in and out of the neuron across the cell membrane and affect the electrical charge of the neuron. ![]() In other words, certain chemicals in the body known as ions have an electrical charge. Neurons communicate with each other using electrochemical signals. How do neurons work?Įach neuron is made up of three main parts: the cell body (also known as the soma), the axon, and the dendrites. Each neuron is connected to more than 1,000 other neurons, making the total number of connections in the brain around 60 trillion! Neurons are organized into patterns and networks within the brain and communicate with each other at incredible speeds. With 80-100 billion nerve cells, known as neurons, the human brain is capable of some astonishing feats. ![]()
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