I appreciate the fact that you are offering this data. However for myself this part in your attached article from the Science Digest raises some concerns for me with regards to those mice experimented upon:
"because the sound is paired with a mild electric shock. The researchers were probing for changes in the central amygdala, a region of the brain known to regulate fear learning." June 30 2014
As I have been told opinions are ok, I am offering mine.
I have not partaken of any drug such as Premarin which used re-impregnated and strapped in standing mares given little water (at one time) or other medicine such determined necessary to improve my conditions at the expense of animals or starving people willing to be tested upon in exchange for a place to rest their heads or eat. There are many articles out there within this stand.
I have seen the effects of mild (?) shocks on people (in the pursuit of treatment or research) and their release later into the public sector as they were not cured and became a burden. As mice do not have a voice, it is debatable insofar as a mild electric current or acceptable bell curve for shocking the lab mouse.
I understand that to many it is a lower life form and for the greater good. However, I seriously offer that civilization has often used that to justify many, many now considered offenses, even against ourselves. Hopefully at some point, with a raised consciousness of all life, alternative methods could be explored to prevent such shocking, maiming, or injecting animals with disease. I understand this may not be a popular stand, yet, I thank you for your time and indulgence none-the-less.