Testosterone can make a female canary singing

Testosterone can make a female canary singing, Tessa Hartog Dutch researchers discovered how to make a female canary sing using testosterone and BDNF protein, that usually female canaries do not sing but with some "suit" female canary brain structure can be modified in a way that could make they sing the song even attractive.

The influence of hormones in the brain walnuts and learning and memory of walnuts is a very complex thing to be addressed and the only suitable model for analysis of the process is the singing voice, so hatrog which was analyzed substances that play a role in the behavior of the female canary singing and how these substances can change brain anatomy.

Research on multi-function of testosterone in showing that testosterone can affect birds to chirp diligently. (Please see back here), this raises new neurons (nerve cells) in the brain region that controls singing. but the extent of the role of other proteins such as BDNF remains unclear. In this experiment Hartog found that BDNF can make female birds singing, even though female canaries can sing with a limited but by combining BDNF and testosterone can enable walnuts betinapun able to chirp with an attractive and varied as well as males.

The most interesting is the effect of testosterone has two truly independent, it can stimulate the production and fusion of new neurons in the brain tissue in birds and produce dilation of blood vessels and changes in the structure and anatomy of the brain associated with singing. The first effect depends on BDNF protein but the latter effect appears to be independent of BDNF.

With the results of these studies Hartog has shown that changes in the nerve cells not only produce physical changes, but also changes in behavior, including its effect on female birds.