... ↑
metanymous в посте Metapractice (оригинал в ЖЖ)
http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=search&db=pubmed&term=j%20Neurosci%5Bta%5D%20AND%2023%5Bvi%5D%20AND%2010691%5Bpg%5D
Your belly's very own body clock
http://www.nature.com/news/2008/080522/full/news.2008.848.html
Society for Research on Biological Rhythms)
http://www.srbr.org/Pages/default.aspx
Short-Wavelength Light Sensitivity of Circadian, Pupillary, and Visual Awareness in Humans Lacking an Outer Retina
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VRT-4RBM5BB-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=dc648012c572ea5e90a002d6837378a5
Entrainment of the human circadian pacemaker to longer-than-24-h days
http://www.pnas.org/cgi/content/abstract/0702835104v1
(импульсы в 100 единиц освещённости (люксов) способны продлить "биологические" сутки, по меньшей мере, до 25 часов.)