At its most basic, state-dependent memory is the product of the strengthening of a particular synaptic pathway in the brain.[6] A neural synapse is the space between brain cells, or neurons, that allows chemical signals to be passed from one neuron to another. Chemicals called neurotransmitters leave one cell, travel across the synapse, and are taken in by the next neuron through a neurotransmitter receptor. This creates a connection between the two neurons called a neural pathway.