Facilitation of acoustic responses of cartwheel neurons of the cat dorsal cochlear nucleus

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RESPONSES to clicks were increased in cartwheel cells of the dorsal cochlear nucleus of cats after pairing presentations of the clicks with local iontophoretic delivery of glutamate. The cells were identified by bursting discharges, and were recorded intracellularly in vivo. The findings indicate that inhibitory interneurons such as cartwheel cells can participate in complex adaptive acoustic signal processing. Each cell displayed doublet discharges of >800 Hz. In 70% of the cells, some of the doublet discharges reached rates >1000 Hz.

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