Resting potentials and action potential thresholds are uniform across all neurons in a network
Resting membrane potentials and action potential thresholds are not uniform across neurons; rather, they vary widely depending on cell type, brain region, morphology, and physiological state.
The claim states that resting potentials and action potential thresholds are uniform across all neurons in a network. Multiple neurophysiology studies demonstrate the exact opposite: neurons exhibit substantial heterogeneity in their intrinsic membrane properties, resting potentials, input resistances, and action potential thresholds, both across different populations and within the same network. Therefore, the claim is thoroughly refuted by current neurophysiological evidence.
Chan RJ, Wang LY. Input-Specific Organization of Intrinsic Excitability Expands Coding Capacity of Fast-Spiking Auditory Neurons.. 2025. https://doi.org/10.1523/jneurosci.2305-24.2025
Demonstrates that neurons within the same population (MNTB principal neurons) display distinct input resistances and resting potassium conductances, resulting in heterogeneous firing properties.
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Sugimura T, Saito Y. Decreases in the sustained firing capacity of layer 2/3 pyramidal neurons in the anterior cingulate cortex of aged rats.. 2026. https://doi.org/10.3389/fnagi.2026.1824113
Shows that neuronal aging alters intrinsic membrane properties, leading to depolarized resting membrane potentials and shifted action potential thresholds.
Aldohbeyb AA. Effects of Apical Dendrite Integrity on Action Potential Properties in Layer 6 Corticothalamic Pyramidal Neurons: Evidence for Hemispheric Differences.. 2026. https://doi.org/10.3390/biology15080608
Finds that even within the same neuronal subtype (layer 6 corticothalamic pyramidal neurons), action potential thresholds and properties differ significantly depending on hemisphere and dendritic integrity.
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