Threshold in Physiology

Threshold in physiology: what is it and how does it affect our lives?

One of the key concepts in physiology is the threshold of excitability. This is the minimum intensity of the stimulus that causes a specific reaction in the excitable structure. In our body, the threshold of excitability can be different for different organs and systems, and its presence and significance can affect our life.

The threshold of excitability plays an important role in our ability to perceive and process information. For example, in the eyes, the excitability threshold determines the minimum amount of light required for us to see objects in the dark. Similarly, the threshold of excitability in the ears determines the minimum volume of sound that we can hear.

Violations of the excitability threshold can lead to various diseases. For example, people with allergic reactions have a lower threshold for excitability of the body to allergens than healthy people. As a result, even a small amount of the allergen can cause a serious reaction.

It is important to understand that the threshold of excitability can change depending on various factors. For example, in some diseases the threshold of excitability may increase or decrease. Also, the excitability threshold can be increased or decreased when using certain medications.

Overall, understanding the threshold of excitability is important for understanding how the body responds to various stimuli and how this can affect our health. If you notice any changes in your sensitivity to certain stimuli, you should contact your doctor to determine the cause of these changes and take appropriate action.

Threshold in physiology

Threshold in physiology is the minimum intensity of a stimulus (such as sound or light) that can cause a specific physiological response in the body. This threshold is determined by two main factors: sensitivity and perception threshold. Sensitivity is the ability to sense changes in the intensity of a stimulus, while perceptual threshold is the minimum value that the brain perceives as significant.