Author/Editor		Dolenšek, Janez
Title		Negativna povratna zveza
Translated title		Negative feedback
Type		članek
Source		Med Razgl
Vol. and No.		Letnik 43, št. 3
Publication year		2004
Volume		str. 219-29
Language		slo
Abstract		Negative feedback is one of the most difficult topics in physiology, possibly because descriptive thinking is useless. Instead, to analyse single constituents quantitatively or semiquantitatively, causal thinking is mandatory. By using analogic simulation, the author tries to show the basic properties of negative feedback. The characteristics of an ideal negative feedback - operating without any appreciable delay - are shown.Then the characieristics of a real negative feedback - including a distinct delay - are shown. Finally, the role of negative feedback in analogue simulation of pulmonary ventilation is described.
Summary		Negativna povratna zveza sodi med težka poglavja fiziologije. Verjetno zato, ker je za njeno obravnavo opisno razmišljanje neuporabno. Namesto tega je obvezno uporabiti vzročno razmišljanje tako, da se posamezne sestavine obravnava kvantitativno ali vsaj semikvantitativno. Avtor z analogno simulacijo poskuša prikazati temeljne lastnosti negativne povratne zveze. V ta namen prikazuje najprej značilnosti "idealne" negativne povratne zveze, ki deluje brez zakasnitve, nato pa značilnosti "realne" negativne povratne zveze, ki deluje z zakasnitvijo. Na koncu prikazuje delovanje negativne povratne zveze pri analogni simulaciji dihanja.
Descriptors		HEMOSTASIS BLOOD PRESSURE PULMONARY VENTILATION APNEA FEEDBACK COMPUTER SIMULATION