Listening to fascinating data by Richard Kinkead at http://www.simposiodopanico.com.br/site/?lang=en.

Here is a relevant abstract:

Sleep. 2009 Dec;3212:1611-20.

Neonatal maternal separation disrupts regulation of sleep and breathing in adult male rats.

Kinkead R, Montandon G, Bairam A, Lajeunesse Y, Horner R.SourceCentre de Recherche du CHUQ, H