Passage Discussion

by **uhdang** Mon Jun 01, 2015 8:37 pm

While I was reading this, I kept thinking of potential loss of neurons when bumping really hard on my head. I wonder if we actually lose brain cells permanently if we bump real hard on our head.

Here is the Passage Analysis.

P1: Past belief was that there is no more neurogenesis after becoming adult for vertebrate.

P2: New evidence regarding canary song shows neurogenesis after becoming adults.

*Full repertoire by breeding season, and losing it after the breeding season. And then developing a new song by the next breeding season.

P3: Size change + Number of Neurons change are speculated due to long life span and flying ability.

P4: Application to mammals, human brains, isn’t certain, but provides an opportunity to further research.

Overall: New evidence dispute the past neurogenesis fact, and a potential for a possible application to human is foreseen.