Final answer:
Convergence is the pattern of synaptic connectivity where multiple presynaptic neurons provide input to a single postsynaptic neuron, allowing for the amplification and integration of signals from multiple sources.
Step-by-step explanation:
The pattern of synaptic connectivity where a large number of presynaptic neurons provide input to a single postsynaptic neuron is known as convergence.
In this type of synaptic connection, multiple signals from different neurons are integrated at the axon hillock and then passed into the axon, where the signal is transferred to another cell. This allows for the amplification and integration of signals from multiple sources.