Author: Hong S-F. Saunders D.S.
Publisher: Taylor & Francis Ltd
ISSN: 0929-1016
Source: Biological Rhythm Research, Vol.29, Iss.4, 1998-10, pp. : 387-396
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Abstract
The majority of blow flies ( Calliphora vicina ) display circadian locomotor activity rhythms that free-run with an unchanging period (t) in darkness (DD), or entrain to a light-dark cycle (LD 1:23). However, a minority produce more complex patterns (spontaneous changes in t, arrhythmicity, or 'split' rhythms) in DD, or undergo rhythm dissociation ('internal desynchronisation') when the light pulses of LD 1:23 initially illuminate the subjective night. These patterns are interpreted as evidence for a complex, multioscillatory and multicellular, structure of the insects' circadian system, and this complexity is discussed in terms of the neuronal architecture of the fly's brain.
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