Google Answers Logo
View Question
Q: during pregnancy,when is the Auditiory nerve created in the unborn baby (fetus) ( Answered,   0 Comments )
Subject: during pregnancy,when is the Auditiory nerve created in the unborn baby (fetus)
Category: Health > Conditions and Diseases
Asked by: alexandnaytan-ga
List Price: $20.00
Posted: 24 Jun 2006 16:34 PDT
Expires: 24 Jul 2006 16:34 PDT
Question ID: 740830
I want to know when the Auditiory nerve is created in the unborn baby
(fetus)during pregnancy (i.e at what week)
Subject: Re: during pregnancy,when is the Auditiory nerve created in the unborn baby (fet
Answered By: webadept-ga on 24 Jun 2006 17:01 PDT

--"As noted, the brainstem matures in a caudal to rostral direction,
and the pons begins to emerge after the medulla, around the 8th week
of gestation. The maturation and myelination of the pons is more
prolonged than the medulla and does not reach advanced levels of
development until around the 7th month of gestation (Langworthy, 1937;
Yakovlev & Lecours, 1967). Hence, many of the functions associated
with the pons appear later in fetal development; i.e. around the 7th
month of gestation. As with the medulla, some functions appear in
advance of others and in an incomplete or irregular fashion.

For example, it has been reported that by the 26th week of gestation
the body of the fetus will reflexively react to vibration and
exceedingly loud auditory (110 db) stimulation 60% of the time,
whereas by 32 weeks the rate is over 80% (Kisilevsky, Muir & Low,
1992; Shahidullah & Hepper, 1993). At 29 weeks not only will the body
jerk, but the FHR will accelerate."

That is from Brain and Mind dot com. A very interesting website to
keep in your research list. The title of the article is  FETAL BRAIN &
COGNITIVE DEVELOPMENT by Rhawn Joseph, Ph.D. -- Brain Research

Not what I would consider an easy read, but it is packed with
information about the development of the brain, nerves and vital areas
of the fetus, and at what time periods these developments normally


There are no comments at this time.

Important Disclaimer: Answers and comments provided on Google Answers are general information, and are not intended to substitute for informed professional medical, psychiatric, psychological, tax, legal, investment, accounting, or other professional advice. Google does not endorse, and expressly disclaims liability for any product, manufacturer, distributor, service or service provider mentioned or any opinion expressed in answers or comments. Please read carefully the Google Answers Terms of Service.

If you feel that you have found inappropriate content, please let us know by emailing us at with the question ID listed above. Thank you.
Search Google Answers for
Google Answers  

Google Home - Answers FAQ - Terms of Service - Privacy Policy