https://pinboard.in/u:infovore/public/ recent bookmarks from infovore 2011-02-16T00:53:04+00:00 http://en.wikipedia.org/wiki/Zeitgeber infovoreZeitgeber (from German for "time giver," or "synchronizer") is any exogenous (external) cue that synchronizes an organism's endogenous (internal) time-keeping system (clock) to the earth's 24-hour light/dark cycle. The strongest zeitgeber, for both plants and animals, is light. Non-photic zeitgebers include temperature, social interactions, pharmacological manipulation and eating/drinking patterns. To maintain clock-environment synchrony, zeitgebers induce changes in the concentrations of the molecular components of the clock to levels consistent with the appropriate stage in the 24-hour cycle, a process termed entrainment."]]> biology clock time zeitgeber https://pinboard.in/ https://pinboard.in/u:infovore/b:d7c6e83eeae3/