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The Living Clock

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Schrödinger-Saal
Plenary / Panel
in englischer Sprache

Virtually all living things, from single-cell plants and animals up through
humans, contain an organic timepiece within their protoplasm. This horologe
is used to adjust individual organisms behavior and physiology to the major
geophysical periodicities expressed in their habitats. Organisms most
commonly synchronize their activities to the twenty-four hour day-night
cycle, but some, like intertidal dwellers, also mimic the timing of the ebb
and flow of the tides.
The fundamental rate at which a clock runs is innate. Here are examples of
the proof for this. There are plants that raise their leaves during the
daytime and drop them to the sides of their stems at night. When these plants
are brought into the laboratory where the lights are always left on and the
temperature held constant, the leaves still rise and fall pretty much in
synchrony with those of their former neighbors remaining in the natural
setting outdoors. Intertidal crabs run around the shoreline when the tide is
out but remain in their burrows during high tides, and display the same
running/rest pattern in the constancy of the lab. Clearly, in the absence of
day/night and high/low tidal changes the experimental organisms clocks take
total temporal control.
The human clock is a daily one. People tested in aperiodic conditions in the
lab continue their same sleep/wake patterns thanks to their internal clocks.
Something like one hundred other processes in humans are known to be under
the same clock control.
While the period of the clock is innate, it s „hands“, i.e., the phase of
the overt activities driven by it, can be reset. This is accomplished by
moving an organism to a different time zone on the face of the earth. Human
shift work of does the same thing.
My talk will illustrate the basics of the temporal aspects of living things.

Ph.D. John D. PALMER

 Biological Rhythms in Intertidal Organisms
 General lab interests are invertebrate development, behavior, and cyclic displays. For the last ten years our emphasis has been on the rhythms and living clocks of shore-dwelling animals, mainly crabs and pelecypods. The work is carried out in marine labs scattered around the world, especially the Portobello Lab in New Zealand. The Marine Biological Laboratory at Woods Hole, Massachusetts serves as home base. We are trying to decipher just what kind of horologue governs organismic rhythms that match the period of the tides. Using new ways to approach the problem we have described several heretofore unknown properties of tide-associated rhythms, and from these findings have produced a circalunidian-clock hypothesis that is now gaining favor.

Technologiegespräche

Timetable einblenden
kategorie: Alle Breakout Plenary

21.08.2003

11:00 - 12:15 Eröffnung Plenary
11:15 - 12:00 Zeit des Wandels – Wandel als Chance Plenary
12:00 - 12:45 50 Years of Schrödingers Reflections on Life and Living Plenary
13:00 - 14:15 Location Strategies for Know-how Intensive Industries Plenary
14:15 - 15:15 Medical Technology and Preventive Medicine Plenary
15:15 - 16:30 The Future of European Reseach – New Instruments and Resources Plenary
18:00 - 18:45 The Living Clock Plenary
18:45 - 19:30 The Devices of Wonder – the Science of Devices of Wonder Plenary

22.08.2003

07:00 - 15:00 Arbeitskreis 5: Innovationsmotor Mikro- und Nanotechnologien Breakout
07:00 - 15:00 Arbeitskreis 4: Kyoto und CO2 – Technologielokomotive und/oder Anlass zur Standortverlagerung? Breakout
07:00 - 15:00 Arbeitskreis 7: Neue Mobilität – neue Partnerschaften für die westlichen Balkanländer Breakout
07:00 - 12:00 Off Alpbach Plenary
07:00 - 15:00 Arbeitskreis 8: Medizintechnologie und Vorsorgemedizin – Finanzierung und Organisation Breakout
07:00 - 15:00 Arbeitskreis 6: Brain Gain, Brain Drain – Zukunftsnetzwerke Österreich – USA Breakout
07:00 - 15:00 Arbeitskreis 2: F&E Infrastruktur – eine Standortstrategie für Großstadtbetreibe Breakout
07:00 - 15:00 Arbeitskreis 9: Digitalisierung der Kommunikation – „Ihr persönliches Radio- und Fernsehprogramm“ Breakout
07:00 - 15:00 Arbeitskreis 1: Risiko Breakout
07:00 - 15:00 Arbeitskreis 3: Utilities und Infrastruktur – Rückgrat industrialisierter Länder Breakout
18:00 - 18:45 The Decade of Machines, that Understand Speech Plenary
18:45 - 19:30 Technology and Know-how Management in and for Intelligence Services Plenary

23.08.2003

07:00 - 08:00 The Location of Science Plenary
08:00 - 09:00 Reflexionen über die Technologiegespräche 2003 – Zusammenfassung „Junior-Alpbach“ Plenary
09:30 - 10:15 Cosmic Background Radiation Plenary
10:15 - 11:00 Architecture für Science – the New Architecture of Science Plenary