Feedback signal

Examples of Feedback signal in the following topics:

• Closing the Feedback Loop

  • If done early, this feedback loop ensures that a correct decision is ultimately made.
  • feedback' exists between two parts when each affects the other..."
  • Feedback signal: The measurement of the actual level of the parameter of interest.
  • Feedback mechanism: The action or means used to subsequently modify the gap.
  • Explain the role of the feedback loop in decision making and the different types of feedback associated with it

• Role of Financial Markets in Providing Feedback to Management

  • Financial markets can provide feedback to management by showing signals of the demand to supply funds to that enterprise.
  • These various audiences can provide feedback to management, such as when the stock price rises or declines.
  • It is governed by positive and negative feedback resulting from the cognitive and emotional factors among market participants.
  • Here a group may be providing feedback to management.
  • Describe how financial markets can provide feedback to a company's management

• Feedback: Visual and Verbal Cues

  • Your audience can provide you with immediate feedback; pay attention to the visual and verbal cues they give you in the moment.
  • Feedback could be as formal as handing out a presentation evaluation following your speech or presentation.
  • If you tell a joke or a funny anecdote, you expect laughter as your feedback.
  • You audience may give you visual, non-verbal cues that signal how they may be receiving your message.
  • Define feedback and describe how you can receive audience feedback in the moment

• Control of Hormone Secretion

  • The endocrine system relies on feedback systems to regulate hormone production and secretion.
  • When these drop below the ideal value the hypothalamus is signaled to begin secreting thyroid-releasing hormone again.
  • Positive feedback mechanisms control self-perpetuating events, that is, they encourage deviation from the mean.
  • Positive feedback systems are much less common although they do exist.
  • During birth, as the baby moves through the birth canal, pressure receptors within the cervix signal the hypothalamus to stimulate the pituitary to secrete oxytocin.

• Homeostatic Control

  • Regulation of blood pressure is an example of negative feedback.
  • Blood vessels have sensors called baroreceptors that detect if blood pressure is too high or too low and send a signal to the hypothalamus.
  • Temperature control is another negative feedback mechanism.
  • The hypothalamus then signals several effectors to return the body temperature to 37 degrees Celsius (the set point).
  • The effectors may signal the sweat glands to cool the skin and stimulate vasodilation so the body can give off more heat.

• Humoral, Hormonal, and Neural Stimuli

  • Insulin causes blood glucose levels to drop, which signals the pancreas to stop producing insulin.
  • This is an example of a negative feedback loop.
  • As blood concentrations of T3 and T4 rise, they inhibit both the pituitary and the hypothalamus in a negative feedback loop.
  • Here, neuronal signaling from the sympathetic nervous system directly stimulates the adrenal medulla to release the hormones epinephrine and norepinephrine in response to stress.

• Mechanisms of Hormone Action

  • Cellular recipients of a particular hormonal signal may be one of several cell types that reside within a number of different tissues.
  • Different tissue types may also respond differently to the same hormonal signal.
  • As a result, hormonal signaling is elaborate and hard to dissect.
  • This is an example of a homeostatic negative feedback loop.
  • Relay and amplification of the received hormonal signal via a signal transduction process.

• Types of Cytokines Participating in Immune Response

  • Cytokines are small cell-signaling protein molecules secreted by numerous cells and used extensively in intercellular communication.
  • They provide the signaling pathways that orchestrate the complex immune responses of the human body.
  • Cytokines are similar to hormones, which are also chemical messengers, but hormones have considerably more variation in molecular structure and are involved more in tissue signaling than cellular signaling.
  • Subsequent cascades of intracellular signalling then alter cell functions.
  • They are glycoproteins involved in the signaling of many types of immune system functions.

• Control of Homeostasis

  • Homeostasis is typically achieved via negative feedback loops, but can be affected by positive feedback loops, set point alterations, and acclimatization.
  • The receptors sense changes in the environment, sending a signal to the control center (in most cases, the brain), which, in turn, generates a response that is signaled to an effector.
  • Homeostasis is maintained by negative feedback loops within the organism.
  • The direction is maintained, not changed, so this is positive feedback.
  • The birth of a human infant is the result of positive feedback.

• Chemoreceptor Regulation of Breathing

  • Chemoreceptor regulation of breathing is a form of negative feedback.
  • A chemoreceptor, also known as chemosensor, is a sensory receptor that transduces a chemical signal into an action potential.
  • In response, the chemoreceptors detect this change, and send a signal to the medulla, which signals the respiratory muscles to decrease the ventilation rate so carbon dioxide levels and pH can return to normal levels.
  • There are several other examples in which chemoreceptor feedback applies.
  • In cases where oxygen intake is too low, feedback increases ventilation to increase oxygen intake.