Neurons can generate spontaneous action potentials without external stimuli
the verdict
SUPPORTED
the evidence backs this
confidence 83/100
Neurons can fire spontaneous action potentials without external stimuli, driven by intrinsic membrane properties and pacemaker ionic currents.
Evidence for · 2
Ionic currents influencing spontaneous firing and pacemaker frequency in dopamine neurons of the ventrolateral periaqueductal gray and dorsal raphe nucleus (vlPAG/DRN): A voltage-clamp and computational modelling study
2017 · cited by 17
Demonstrates that dopamine neurons fire spontaneous action potentials independently of major synaptic currents due to intrinsic membrane properties and ionic currents.
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More for · 1
Cell-intrinsic mechanisms underlying spontaneous activity in the mouse visual cortical slice: implications for fragile X pathophysiology.
2026 · cited by 2
Shows that specific neocortical layer 5 neurons exhibit spontaneous action potentials driven by intrinsic persistent sodium currents under physiological ionic conditions.