Characterization of neurons born and incorporated into a vocal control nucleus during avian song learning

Brain Res. 1993 Aug 27;620(2):335-8. doi: 10.1016/0006-8993(93)90176-n.


In male zebra finches, song learning is accompanied by the addition of new neurons to Area X, a nucleus necessary for normal song development. We examined whether Area X neurons born after 15 days post-hatch are recruited into the efferent pathway from Area X to the dorsolateral nucleus of the medial anterior thalamus (DLM). Our data suggest that the majority of these new Area X neurons are interneurons and that DLM-projecting neurons are incorporated into Area X prior to song learning.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Autoradiography
  • Birds / physiology*
  • Brain / anatomy & histology
  • Brain / cytology
  • Brain / physiology*
  • Brain Mapping*
  • Cell Division
  • Learning / physiology*
  • Male
  • Neurons / cytology
  • Neurons / physiology*
  • Sex Characteristics
  • Thymidine / metabolism
  • Tritium
  • Vocalization, Animal / physiology*


  • Tritium
  • Thymidine