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Set point theory can be construed as implying weight regulation in a wide or tight range around the set point, in a symmetric or in an asymmetric manner (i.e. treating weight gain and loss either the same or differently), and may apply to regulation of body fat levels specifically (in a multi-compartment model) or to overall body weight.
Set point (endocrinology), a term encompassing a number of quantities (e.g. body weight, body temperature) where the endocrine system contributes to regulation and homeostasis. Setpoint (control system), the target value that an automatic control system, for example PID controller, will aim to reach; Set point theory, a theory describing how ...
Hedonic adaptation is an event or mechanism that reduces the affective impact of substantial emotional events. Generally, hedonic adaptation involves a happiness "set point", whereby humans generally maintain a constant level of happiness throughout their lives, despite events that occur in their environment.
Homeostasis is an almost exclusively biological term, referring to the concepts described by Bernard and Cannon, concerning the constancy of the internal environment in which the cells of the body live and survive.
The set point assumption is a negative feedback mechanism. [23] Two popular set point theories include the glucostatic set point theory and the lipostatic set point theory. The set point theories of hunger and eating present a number of weaknesses. [24] The current epidemic of obesity and eating disorders undermines these theories. [25]
First proposed by Peter Sterling and Joseph Eyer in 1988, the concept of allostasis shifts the focus away from the body maintaining a rigid internal set-point, as in homeostasis, to the brain's ability and role to interpret environmental stress and coordinate changes in the body using neurotransmitters, hormones, and other signaling mechanisms.
The term is often used in contrast to hierarchy, i.e. a vertical arrangement of entities (systems and their subsystems), usually ordered from the top downwards rather than from the bottom upwards. Holarchy : A concept invented by Arthur Koestler to describe behavior that is partly a function of individual nature and partly a function of the ...
In cybernetics and control theory, a setpoint (SP; [1] also set point) is the desired or target value for an essential variable, or process value (PV) of a control system, [2] which may differ from the actual measured value of the variable.