Neurotransmitter Primary Role Typical Postsynaptic Effect Glutamate Fast excitatory signaling Depolarization (EPSP) GABA Inhibitory regulation Hyperpolarization (IPSP) Dopamine Reward and motivation Modulatory (varies by receptor). The specificity of the interaction is absolute; a postsynaptic neuron will only react to a neurotransmitter if it possesses the matching receptor.
Postsynaptic Neuron Integration Process: How Signals are Combined and Decided
These regions are densely packed with the receptor proteins that determine which neurotransmitters the cell will respond to, effectively setting the neuron's chemical vocabulary and filtering the signals it attends to. Inhibition: The Balance of Neural Activity Not all signals prompt the postsynaptic neuron to fire; the nature of the response is categorized as either excitatory or inhibitory.
If the sum of excitatory signals outweighs the inhibitory signals within a specific timeframe, the neuron reaches its threshold and fires an action potential. In most cases, the synapses occur on the dendrites or the main cell body, or soma, of the target neuron.
How Postsynaptic Neuron Integration Manages Excitatory and Inhibitory Signals
An excitatory postsynaptic potential (EPSP) depolarizes the cell, moving it closer to the threshold required to generate an action potential. The integration of these conflicting signals determines the ultimate fate of the neuron.
More About What is postsynaptic neuron
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More perspective on What is postsynaptic neuron can make the topic easier to follow by connecting earlier points with a few simple takeaways.
