Do brain cells use electricity?

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Neurons do use electricity to communicate. When a neuron communicates, the usual sequence of events is: 1) binding of neurotransmitters to receptors on the cell body (soma) or dendritic tree; 2) depending on the ligand/receptor in question, the membrane may become more or less permeable to certain ions (such as sodium, potassium, chloride etc), which changes the electrical potential difference across the cell membrane; 3) if the potential difference increases enough, then the cell will 'fire'; sending an 'action potential' (i.e., self-propagating electrical current across the membrane) from its axon hillock all the down to it's synaptic terminal, where it will then release it's neurotransmitters - and the process starts all over over again for recipient cells.
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