Spatial summation is characterized by:

A) several presynaptic neurons releasing neurotransmitters simultaneously.
B) several presynaptic neurons releasing neurotransmitters in a sequential pattern.
C) several postsynaptic neurons receiving sequential inputs from several presynaptic neurons.
D) a single presynaptic neuron firing multiple times in rapid succession.
E) a single presynaptic neuron directly contacting several postsynaptic neurons.

Spatial Summation

The summing of several postsynaptic potentials resulting when several presynaptic neurons release neurotransmitter simultaneously. Compare with temporal summation.

Presynaptic Neurons

Neurons that send signals to a synaptic gap, initiating neurotransmitter release for neuron-to-neuron communication.

Neurotransmitters

Chemical substances released by neurons to transmit signals across a synapse to another neuron, muscle cell, or gland cell.