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Worksheet 2

Feedback loop, homeostasis,

QuestionAnswer
Feedback Responding to a change in psychological variable by producing a change in that same psychological variable.
Positive feedback Responding to a change in a psychological variable by adding/amplifying to that change
Negative feedback Responding to a change in a psychological variable by reversing that change back to the set point.
Rising body temperature if controlled by negative feedback? it causes it to decrease.
Rising body temperature if controlled by positive feedback? It amplifies the problem so it increases it.
Falling body temperature if controlled by negative feedback? causes it to come back up due to it reversing the problem.
Homeostasis/similar The existence and maintenance of relatively stable internal environment in the face of a changing external environment.
Set-point The level or point at which a variable psychological state tends to stabalize.
what are some psychological variable? Body temperature, blood pressure, blood sugar, blood ph, etc.
What type of feedback is needed to maintain physiological variables near set-point? Negative feedback
What type of feedback would drive physiological variables away from set-point? Positive feedback.
Receptor Cell or organ which detects changes in a particular, psychological variable.
Control center, or integration center. the cell or organ that acts as the "decision maker"
effector the muscle or gland that produces a change in a particular psychological variable.
Stimulus the initial change that is detected by the receptor. [for example, increased BP]
Response. the initial change by the effector. [lowered BP]
generate a feedback loop variable-> stimuli->receptor->control center->effector->response-> back to variable.
Created by: Alexa Bales
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