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The diagram shows the basic mechanism of neurotransmission. NTs of both types (inhibitory and excitatory) are released from synaptic vesicles in synapses into the synaptic cleft. In the synaptic cleft, NTs are received by receptors present on the target cell. After binding with receptors, NTs provide signaling for various functions including sleep, homeostasis, pain, emotion, and cognition.
