OVERSHOOT By N., Pam M.S. - April 7, 2013 noun. the part of an action potential which symbolizes the phase whenever the membrane potential is temporarily depolarized relative to the resting potential. OVERSHOOT: "The overshoot cannot be accounted for." Related Psychology Terms UNDERSHOOT DENDRITIC POTENTIAL NERVE IMPULSE PREFERENCE VOLTAGE-GATED ION CHANNEL POLARIZED MEMBRANE TRANSDUCTION STIMULATION EFFECTS NEUROTRANSMITTER POSITIVE AFTERPOTENTIAL Cite this page: N., Pam M.S., "OVERSHOOT," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/overshoot/ (accessed October 20, 2021).