The human brain consists of billions of billions of neurons that are constantly communicating with each other. Communication between neurons is the reason we sense, perceive, think, feel, and act, but how exactly do these neurons convey information? Neurons aren’t physically connected to each other; tiny gaps called synapses separate each and every one of them. Thus, neurons must transmit information across synapses using chemicals in order for information to travel through the vast network of connections in our brains. The process by which neurons communicate across synapses is called synaptic transmission.

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