Slow NMDA-EPSCs at synapses critical for song development are not required for song learning in zebra finches.
Journal Article (Journal Article)
Birdsong, like human speech, is learned via auditory experience during a developmentally restricted sensitive period. Within projection neurons of two avian forebrain nuclei, NMDA receptor-mediated EPSCs (NMDA-EPSCs) become fast during song development, a transition posited to limit learning. To discover whether slow NMDA-EPSCs at these synapses are required for learning, we delayed song learning beyond its normal endpoint, post-hatch day (PHD) 65, by raising zebra finches in isolation from song tutors. At PHD45, before learning, isolation delayed NMDA-EPSC maturation, but only transiently. By PHD65, NMDA-EPSCs in isolates were fast and adult-like, yet isolates presented with tutors readily learned song. Thus song learning did not require slow NMDA-EPSCs at synapses critical for song development.
- Livingston, FS; White, SA; Mooney, R
- May 2000
Volume / Issue
- 3 / 5
Start / End Page
- 482 - 488
International Standard Serial Number (ISSN)
Digital Object Identifier (DOI)
- United States