Suprathreshold

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In the context of graded potentials (in the postsynaptic cell), this is when the graded potential arriving at the trigger zone of the axon hillock is above the threshold potential. This results in an action potential being fired in the neurone[1][2].

References

  1. http://www.physiologyweb.com/glossary/s/supra_threshold.html
  2. http://www.physiologyweb.com/glossary/s/supra_threshold.html
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