When the oxygen demand of the body’s tissues increases, for example, when we perform physical exercise, the body responds increasing blood pressure so that the flow of oxygen is higher. ![]() Therefore, there are temperature regulation mechanisms that are activated when it falls below what is acceptable (such as shivering, which generates muscle heat by repeatedly mobilizing the muscles, or the constriction of blood vessels to preserve the heat of the blood), or when it rises above what is acceptable (such as sweating to cool the skin, or vasodilation to allow the blood to cool). The body temperature of humans it must be kept in a very stable range so that its chemical processes take place unchanged.But from the tiniest microbe to large terrestrial mammals, everyone needs to regulate their bodily functioning through negative feedback and sometimes accelerate certain processes through positive feedback. Homeostasis it is an indispensable condition for life, which all living beings share, although through very different mechanisms. That is to say, positive and negative feedback in the body seek to maintain its homeostasis, its state of balance that guarantees a more or less prolonged existence. In both cases, the task is to allow the organism a vital adaptation to the environment. When the concept of feedback is applied to the human body and other living beings, it becomes evident that there are several processes designed to maintain the stability of the organism (that is, they are negative feedback processes), and others designed to increase its production of certain substances (positive feedback processes). See also Feedback - Concept and meanings in various fields Homeostasis Sweat is a negative feedback that favors homeostasis. They are very common in electrical power supplies. How the capacity multipliers work, which are transistors configured to multiply the capacity of a capacitor, gaining current as it travels through the circuit.Sound feedbackAn unpleasant noise characteristic of misplaced microphones in a recording, it occurs when the audio signal emitted by the speakers is captured by the microphone and emitted again, amplifying the sound until it becomes noise.If the latter is used to improve the facilities, it will be possible to fish more efficiently, increasing the money obtained and so on. A fishing facility it extracts a certain quantity of food from the sea, with which it pays for its maintenance and obtains a surplus.When conducting a greater electrical charge, an increase in temperature is produced, which allows the charge to increase and so on, until the artifact is destroyed if no other process intervenes. How semiconductors work, whose ability to conduct electricity is greater the higher its temperature.Medical exams who draw our blood to see how healthy we are and with that information modify our diet or our lifestyle.A user satisfaction survey, provided by a company to its clientele so that they can return to the company the information they consider about the operation of the same.The dynamics of teaching evaluation They serve to control how well the teaching dynamics works, since the class provides the teacher with the necessary information about the learning that takes place in it, and allows him to make adjustments in it.The refrigerator thermostat, which measures the temperature continuously, and once the desired minimum is reached, it turns off the compressors and stops cooling and once the maximum allowed is reached, it turns them on again.See also Control in Administration - Concept, types and process (phases) Having understood the difference between positive and negative feedback, we can find other examples for each: See also: Interdependence Examples of positive and negative feedback An example of this is the reinvestment of capital from a factory, in which the money obtained from the sale of products is spent on new machines that allow more products to be manufactured, in order to obtain more money and be able to improve the machines again. That is, it tends to increase the signal or activity, since by returning the information at the beginning, it enhances certain changes in the process. Positive feedback has a creative, productive, and change-pushing effect.This is what happens, for example, with the quality control systems of factories: a portion of the manufactured products do not go on sale, but are consumed internally to ensure that they meet minimum quality standards. It returns the information produced to the issuer, so that it can correct the input pattern, and thus keeps the system working. Negative feedback has a stabilizing effect on the system.That is, the two possible types of feedback lead to different scenarios:
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