Their 87-page chapter does an outstanding job of conjuring up the intellectual development of the synapse field ... a chapter by Tom Südhof on the synaptic cleft. As far as I know, there has ...

At a chemical synapse, one neuron releases neurotransmitter molecules into a small space (the synaptic cleft) that is adjacent to another neuron. The neurotransmitters are contained within small sacs ...

Between impulses the transmitter molecules are rapidly removed from the synaptic cleft to prevent continuous stimulation of postsynaptic neurons. There are two types of removal: Re-uptake – the ...

This results in enough neurotransmitter being diffused across the synaptic cleft to trigger the impulse in the postsynaptic neuron. This process is called summation.