Periodicity
Research News and Information

Saturday, November 21, 2009

Walking in Fourier's space: algorithms for the computation of periodicities in song patterns by the cricket Gryllus bimaculatus.

29 Sep 2009 Is discrimination of the envelope of an acoustic signal based on spectral or temporal computations? To investigate this question for the cricket Gryllus bimaculatus, pattern envelopes were constructed by the addition of several sine waves and ... Read more...

The role of children's routines of daily living, supervision, and maternal fatigue in preschool children's injury risk.

29 Sep 2009 The purpose of this study was to (a) explore the relationship between the lack of everyday routines and children's unintentional injuries, (b) examine two mechanisms of effect through which lack of routines might operate, children's sleep and ... Read more...

Dissociation of circadian and light inhibition of melatonin release through forced desynchronization in the rat.

28 Sep 2009 Pineal melatonin release exhibits a circadian rhythm with a tight nocturnal pattern. Melatonin synthesis is regulated by the master circadian clock within the hypothalamic suprachiasmatic nucleus (SCN) and is also directly inhibited by light. The ... Read more...

Latest indexed articles for 'Periodicity'

These are the very latest articles for this heading:

• Alcohol consumption and morning rise in blood pressure in men from a population-based study. 30 Oct 2009
• Morning blood pressure surge: ready for daily clinical practice? 30 Oct 2009
• Walking in Fourier's space: algorithms for the computation of periodicities in song patterns by the cricket Gryllus bimaculatus. 29 Sep 2009
• The role of children's routines of daily living, supervision, and maternal fatigue in preschool children's injury risk. 29 Sep 2009
• Dissociation of circadian and light inhibition of melatonin release through forced desynchronization in the rat. 28 Sep 2009
• Group I mGluR activation enhances Ca(2+)-dependent nonselective cation currents and rhythmic bursting in main olfactory bulb external tufted cells. 21 Sep 2009
• Noeud vital for breathing in the brainstem: gasping--yes, eupnoea--doubtful. 10 Sep 2009
• Serotonin targets inhibitory synapses to induce modulation of network functions. 10 Sep 2009
• Structural and functional architecture of respiratory networks in the mammalian brainstem. 10 Sep 2009
• A repertoire of rhythmic bursting produced by hypoglossal motoneurons in physiological and pathological conditions. 10 Sep 2009
• Developmental basis of the rostro-caudal organization of the brainstem respiratory rhythm generator. 10 Sep 2009
• Temporal framing of thalamic relay-mode firing by phasic inhibition during the alpha rhythm. 8 Sep 2009
• Inbred mouse strains differ in multiple hippocampal activity traits. 2 Sep 2009
• Lack of kainic acid-induced gamma oscillations predicts subsequent CA1 excitotoxic cell death. 2 Sep 2009
• Association between morning blood pressure surge and cardiovascular remodeling in treated elderly hypertensive subjects. Sep 2009
• Temporal patterns of lipoperoxidation and antioxidant enzymes are modified in the hippocampus of vitamin A-deficient rats. 30 Aug 2009
• A Lorentz model for weak magnetic field bioeffects: part I--thermal noise is an essential component of AC/DC effects on bound ion trajectory. 30 Aug 2009
• A Lorentz model for weak magnetic field bioeffects: part II--secondary transduction mechanisms and measures of reactivity. 30 Aug 2009
• Transcallosal connectivity and cortical rhythms: findings in children with spina bifida. 24 Aug 2009
• Key central pattern generators of the spinal cord. 13 Aug 2009

See a longer list of these articles.

Technical information about 'Periodicity'

Definition: The tendency of a phenomenon to recur at regular intervals; in biological systems, the recurrence of certain activities (including hormonal, cellular, neural) may be annual, seasonal, monthly, daily, or more frequently (ultradian).

Descriptor UI: D010507

Alternative terms: Periodicity; Periodicities; Rhythmicity; Rhythmicities; Cyclicity; Cyclicities; Biorhythms; Biorhythm; Bioperiodicity; Bioperiodicities;

Related Mesh Headings: Biological Clocks; Circadian Rhythm;

Tree Number: G01.910.645; G07.180.562;

Technical Notes: IM + coord with specific dis for periodically occurring dis (IM); no qualif; do not confuse with PERIODIC DISEASE, a specific clin entity: see Dorland