Periodicity and quasiperiodicity

From WikiLectures

Periodicty is the quality or state of being periodic, recurring at regular interval.

Periodic function[✎ edit | edit source]

In mathematics a periodic function is a function that repeats its values in regular intervals. Examples are sinus, cosinus and tanget functions.
In physics periodic functions describe phenomena such as oscillations and waves.

Quasiperiodicity[✎ edit | edit source]

Some systems display a pattern of recurrence with a component of unpredictability. The term quasiperiodicity can be used to describe such a system.

Physiology and medicine[✎ edit | edit source]

In physiology/medicine the healthy heart rhythm (sinus rhythm), as measured by an ECG, is characterized by periodicity.
Heart rhythm disorders can be characterized by quasiperiodicity.

Links[✎ edit | edit source]

Related articles[✎ edit | edit source]

External links[✎ edit | edit source]

Bibliography[✎ edit | edit source]

Incomplete citation of web. Heart Rhythm Disorders [online]. [cit. 2013-01-17]. <http://www.emedicinehealth.com/heart_rhythm_disorders/article_em.htm>.

Incomplete citation of web. periodicity [online]. [cit. 2013-01-17]. <http://www.memidex.com/periodicity>.

Incomplete citation of web. Quasiperiodicity and chaos in cardiac fibrillation [online]. [cit. 2013-01-17]. <http://www.ncbi.nlm.nih.gov/pmc/articles/PMC507798/>.

Incomplete citation of web. periodicity [online]. [cit. 2013-01-17]. <http://www.thefreedictionary.com/periodicity>.