Summation, which includes both spatial and temporal summation, is the process that determines whether or not an action potential will be generated by the combined effects of excitatory and inhibitory signals, both from multiple simultaneous inputs (spatial summation), and from repeated inputs (temporal summation). Depending on the sum total of many individual inputs, summation may or may not ...
There is temporal summation if the target neuron only receives a repeatedly short interval input from a lone axon terminal. There is spatial summation when the target neuron receives several inputs from several sources. “Temporal summation” is the effect produced by a particular neuron to be able to achieve an action potential.
Spatial summation is like using many shovels to fill up a hole all at once. Temporal summation is like using a single shovel to fill up a hole over time. Both methods work to fill up the whole (the post-synaptic neuron reaches its action potential threshold).
Spatial vs Temporal Summation The mechanism responsible for the integration of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs), or both in the postsynaptic neuron is referred to as Summation. Since, an individual EPSP has very small effect on the postsynaptic membrane potential, it is not enough to reach the threshold level, thus […]
The main difference between temporal and spatial summation is that temporal summation occurs when one presynaptic neuron releases neurotransmitters over a period of time to fire an action potential whereas spatial summation occurs when multiple presynaptic neurons release neurotransmitters together to fire an action potential in the postsynaptic neuron.
Best Answer: Spatial summation occurs when excitatory potentials from many different presynaptic neurons cause the postsynaptic neuron to reach its threshold and fire. Temporal summation occurs when a single presynaptic neuron fires many times in succession, causing the postsynaptic neuron to reach its threshold and fire.
Temporal and spatial summation of synaptic input on a neuron underlies the integration of information from diverse sources. The convergence of input and comparison of this input at the neuronal level is the foundation of decision-making. The "decisions" of many neurons forming a
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