Two peaks in the activity rhythm of cockroaches controlled by one circadian pacemaker
β Scribed by Gottfried Wiedenmann
- Publisher
- Springer
- Year
- 1980
- Tongue
- English
- Weight
- 656 KB
- Volume
- 137
- Category
- Article
- ISSN
- 0340-7594
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π SIMILAR VOLUMES
Evidence presented in this paper indicates that a robust circadian rhythm in the frequency of neural activity can be recorded from the central nervous system of intact cockroaches, Leucophaea maderae. This rhythmicity was abolished by optic lobe removal. Spontaneous neural activity was then used as
Mitotic activity in the duodenum of the rat and mouse exhibits a circadian periodicity with a peak in the rat between 1200 and 1500 hours and a sustained trough between 1800 and 0600. Scintillation counts revealed a similar rhythm in the total uptake of 3H-thymidine by the rat duodenum with a sustai