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- W4319462017 abstract "Abstract The acoustic environment an animal experiences early in life shapes the structure and function of its auditory system. This process of experience-dependent development is thought to be primarily orchestrated by potentiation and depression of synapses, but plasticity of intrinsic voltage dynamics may also contribute. Here we show that at the peak of the critical period for song memorization, neurons in the zebra finch caudal mesopallium, a cortical-level auditory area, can rapidly change their firing dynamics. This plasticity was only observed in birds that were reared in a complex acoustic and social environment, which also caused increased expression of the low-threshold potassium channel Kv1.1 in the plasma membrane and endoplasmic reticulum. Intrinsic plasticity depended on activity, was reversed by blocking low-threshold potassium currents, and was prevented by blocking intracellular calcium signaling. Taken together, these results suggest that Kv1.1 is rapidly mobilized to the plasma membrane by activity-dependent elevation of intracellular calcium. This produces a shift in the excitability and temporal integration of CM neurons that may be permissive for auditory learning in complex acoustic environments during a crucial period for the development of vocal perception and production." @default.
- W4319462017 created "2023-02-09" @default.
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- W4319462017 date "2023-02-08" @default.
- W4319462017 modified "2023-10-07" @default.
- W4319462017 title "Rapid, activity-dependent intrinsic plasticity in the developing zebra finch auditory cortex" @default.
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- W4319462017 doi "https://doi.org/10.1101/2023.02.07.527481" @default.
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