Excitatory postsynaptic potential

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An excitatory post-synaptic potential (EPSP) occurs when positive ions depolarise the post-synaptic membrane. EPSP is a graded potential, it increases the likelihood of a postsynaptic action potential occurring[1].

References  

  1. ↑ https://www.ncbi.nlm.nih.gov/books/NBK11117/
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