Is there an intrinsic period of the circadian clock? Response.
Czeisler
C A
CA
Circadian, Neuroendocrine, and Sleep Disorders Section, Division of Endocrinology, Department of Medicine, Harvard Medical School, Brigham and Women's Hospital, Boston, MA 02115, USA.
Dijk
D J
DJ
Kronauer
R E
RE
Brown
E N
EN
Duffy
J F
JF
Allan
J S
JS
Shanahan
T L
TL
Rimmer
D W
DW
Ronda
J M
JM
Mitchell
J F
JF
Silva
E J
EJ
Emens
J S
JS
D000818:Animals; D001683:Biological Clocks / Q000235:genetics / Q000502:physiology*; D002909:Chronobiology Phenomena; D002940:Circadian Rhythm / Q000235:genetics / Q000502:physiology*; D003624:Darkness; D006801:Humans; D012890:Sleep