What is the area between neurons across which nerve impulses travel?

The area between neurons across which nerve impulses travel is called the synaptic cleft or synaptic gap. It separates the pre-synaptic neuron from the post-synaptic neuron. Neurotransmitters released from the pre-synaptic neuron diffuse across the synaptic cleft to bind to receptors on the post-synaptic neuron, initiating a post-synaptic response.