alexa Plasticity in the intrinsic excitability of cortical pyramidal neurons.
Neurology

Neurology

Brain Disorders & Therapy

Author(s): Desai NS, Rutherford LC, Turrigiano GG

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Abstract During learning and development, the level of synaptic input received by cortical neurons may change dramatically. Given a limited range of possible firing rates, how do neurons maintain responsiveness to both small and large synaptic inputs? We demonstrate that in response to changes in activity, cultured cortical pyramidal neurons regulate intrinsic excitability to promote stability in firing. Depriving pyramidal neurons of activity for two days increased sensitivity to current injection by selectively regulating voltage-dependent conductances. This suggests that one mechanism by which neurons maintain sensitivity to different levels of synaptic input is by altering the function relating current to firing rate. This article was published in Nat Neurosci and referenced in Brain Disorders & Therapy

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