Summary: 0892-6638/88/0002-0097/$01 .50. © FASEB 97
Control strategies in physiological systems
JAMES C. HOUK
Department of Physiology, Northwestern University Medical Center, Chicago, Illinois 60611, USA
In this paper, written for a general audience, I review
and contrast various strategies that the body uses to
control homeostasis and movement. Messages, signals,
communication channels, and control systems are dealt
with from both a cellular and an integrative perspec-
tive. The major global control strategies are feedback,
feedforward, and adaptive control, and examples of
each are presented to highlight advantageous and dis-
advantageous features. Many physiological systems use
these three strategies in combination. - HOUK, J. C.
Control strategies in physiological systems. FASEB J.
2: 97-107; 1988.
Key Words: communication channels control systems . feed-
forward . feedback motor neurons