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Rhythmic Behavior (rhythmic + behavior)

Distribution by Scientific Domains
Life Sciences60%

Selected Abstracts

Neurobiology of the fruit fly's circadian clock

GENES, BRAIN AND BEHAVIOR, Issue 2 2005
C. Helfrich-Förster
Studying the fruit fly Drosophila melanogaster has revealed mechanisms underlying circadian clock function. Rhythmic behavior could be assessed to the function of several clock genes that generate circadian oscillations in certain brain neurons, which finally modulate behavior in a circadian manner. This review outlines how individual circadian pacemaker neurons in the fruit fly's brain control rhythm in locomotor activity and eclosion. [source]

Rhythm in Mother-Infant Interactions

INFANCY, Issue 2 2003
Deborah F. Deckner
Rhythmic behavior and the association of vocal rhythmic behavior with language development were studied in a sample of 30 mother-infant dyads. Dyads were observed in 2 contexts (1 involved sharing pictures and the other sharing musical toys) when infants were 18 and 24 months of age. Vocal rhythmic behavior was seen in both contexts, and in both contexts mothers matched their infant's vocal rhythmic behavior at greater than chance rates. Greater matching tended to be associated with higher language scores whereas, counter to prediction, higher rates of maternal vocal rhythmic behavior tended to be associated with lower language scores. At 24 months of age, mother-daughter dyads showed more matching than mother-son dyads. These results suggest that differences in maternal production of vocal rhythmic behavior may foster different language learning strategies. [source]

Microhabitat and rhythmic behavior of tiger beetle Callytron yuasai okinawense larvae in a mangrove forest in Japan

ENTOMOLOGICAL SCIENCE, Issue 3 2007
Aya SATOH
Abstract Mangrove forests are regularly flooded by tides at intervals of approximately 12.4 h (tidal rhythm). Larvae of the tiger beetle Callytron yuasai okinawense in a mangrove forest made shallow burrows in mounds up to 1 m in height constructed by the mud lobster Thalassina anomala. No larval burrows were observed on the forest floor, which was very muddy even during low tide. Some larvae plugged the burrow openings before they were submerged at high tide. The mean interval between consecutive burrow plugging events was 12.37 h, which is similar to the period of tidal cycles. Nine out of 30 larvae plugged the burrow openings even when the burrows did not become submerged. Plugging behavior may be governed by an endogenous biological clock, or may be a response to exogenous information about tidal level (e.g. moisture seeping through the ground). [source]

Rhythm in Mother-Infant Interactions

INFANCY, Issue 2 2003
Deborah F. Deckner
Rhythmic behavior and the association of vocal rhythmic behavior with language development were studied in a sample of 30 mother-infant dyads. Dyads were observed in 2 contexts (1 involved sharing pictures and the other sharing musical toys) when infants were 18 and 24 months of age. Vocal rhythmic behavior was seen in both contexts, and in both contexts mothers matched their infant's vocal rhythmic behavior at greater than chance rates. Greater matching tended to be associated with higher language scores whereas, counter to prediction, higher rates of maternal vocal rhythmic behavior tended to be associated with lower language scores. At 24 months of age, mother-daughter dyads showed more matching than mother-son dyads. These results suggest that differences in maternal production of vocal rhythmic behavior may foster different language learning strategies. [source]

The ups and downs of daily life: Profiling circadian gene expression in Drosophila

BIOESSAYS, Issue 6 2002
Paul D. Etter
Circadian rhythms are responsible for 24-hour oscillations in diverse biological processes. While the central genes governing circadian pacemaker rhythmicity have largely been identified, clock-controlled output molecules responsible for regulating rhythmic behaviors remain largely unknown. Two recent reports from McDonald and Rosbash1 and Claridge-Chang et al.2 address this issue. By identifying a large number of genes whose mRNA levels show circadian oscillations, the reports provide important new information on the biology of circadian rhythm. In addition, the reports illustrate both the power and limitations of microarray-based methods for profiling mRNA expression on a genomic scale. BioEssays 24:494,498, 2002. © 2002 Wiley Periodicals, Inc. [source]