MODULATION OF HYDRA-ATTENUATA RHYTHMIC ACTIVITY .6. COMBINED EFFECTS OF BACKGROUND AND PULSE LIGHT WAVELENGTH (Articolo in rivista)

Type
Label
  • MODULATION OF HYDRA-ATTENUATA RHYTHMIC ACTIVITY .6. COMBINED EFFECTS OF BACKGROUND AND PULSE LIGHT WAVELENGTH (Articolo in rivista) (literal)
Anno
  • 1992-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/1011-1344(92)85137-J (literal)
Alternative label
  • TADDEIFERRETTI, C; DIMAIO, V; MUSIO, C; COTUGNO, A (1992)
    MODULATION OF HYDRA-ATTENUATA RHYTHMIC ACTIVITY .6. COMBINED EFFECTS OF BACKGROUND AND PULSE LIGHT WAVELENGTH
    in Journal of photochemistry and photobiology. B, Biology (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • TADDEIFERRETTI, C; DIMAIO, V; MUSIO, C; COTUGNO, A (literal)
Pagina inizio
  • 307 (literal)
Pagina fine
  • 315 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 15 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 9 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 4 (literal)
Note
  • ISI Web of Science (WoS) (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ICIB-CNR (literal)
Titolo
  • MODULATION OF HYDRA-ATTENUATA RHYTHMIC ACTIVITY .6. COMBINED EFFECTS OF BACKGROUND AND PULSE LIGHT WAVELENGTH (literal)
Abstract
  • Hydra is a photosensitive organism, although lacking identified photoreceptive organs. The behaviour of Hydra in undisturbed conditions is characterized by a repetitive body contraction-elongation activity. A transient alteration of the period length of such natural rhythmic activity is evoked by a light pulse stimulus and results in an immediate phase shift of the activity cycle. The sign and amplitude of such a photoresponse is a function of the light pulse intensity, application phase and wavelength. A persistent alteration in the period length of the rhythmic activity can be produced by a change in the background illumination wavelength. (literal)
  • Experiments were performed to study the effects of modifications of the light wavelength of both the pulse and the background illumination. The results show that the persistent modification of the period length mentioned above does not occur isotropically along all phases of the cycle, giving an insight into the complexity of the mechanism responsible for the photoresponse. (literal)
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