Not yet registered? Create a OverBlog!

Create my blog

A guide to your sense of touch

The sense of touch is used everyday of a person's life. Whether sleeping or waking up, touch is active and responsive. Yet, most of the time, it is a forgotten sensory organ. Unlike the eyes and the ears, its stimulus are largely unconscious in character, and yet, it is a vitally important sensory organ. To find out more about the sense of touch, read this article.

Physical apparatus involved in the sense of touch

The skin has several structures which are involved in relaying touch messages. They are: Receptor endings The sensory receptors receive their signals from the receptor endings. There are several different types, each one responds to a different type of touch. Sensory receptors The skin has sensory receptors which receive information from the external environment. These receptors can discern between the following inputs: - Pain - Heat - Cold - Touch - Pressure The amount of receptors will vary from one part of the body to another. For example, there are more pain receptors than cold receptors throughout the body. Furthermore, some body parts will feel higher levels of one type of touch than another. The fingertips, for example, have the highest amount of touch receptors in the body. Nerve fibres They relay the messages from the sensory receptors to the nerves, and from there on the brain. There are different types of nerve fibres present. Some only react to sudden changes in condition such as sharp pain, for example, whereas others are continually providing some kind of feedback.

The mechanism behind the sense of touch

Once the touch system picks up signals and relays them into the nerves, they are then forwarded onto the post central gyros. This is an area in the front, middle part of the brain. This area is also referred to as the somatosensory cortex, and it is the main sensory reception and coordinating area, within the brain. It is the somatosensory system which discerns what to do with different touch signals. Some of this process is hard-wired into the body. For example, the pain reflex is governed by the autonomic nervous system. This is an ancient nerve complex in the body, which dates back to the earliest stages of human development. Its function is to maintain life. So, in the case of a person who places their hand on a hot surface without looking, he does not have to think about what to do. Rather, pain is felt and the body immediately recoils. However, many aspects of human touch control are learned rather than
hard-wired responses. For example, a child might enjoy playing in water, and then associates this with the pleasurable feeling of running water. Later in life, this person may well immediately feel pleasure whenever he/she is in running water.

Same category articles Health & wellbeing

The facts about wrist blood pressure

The facts about wrist blood pressure

One of the most deadliest diseases that is not easily detected, is high blood pressure. With high blood pressure, you don't get pain. You don't feel it until a stroke or a heart attack occurs. Measuring your blood pressure is therefore, important and it is necessary to do it correctly. This article shows the facts about wrist blood pressure.
How to be more social

How to be more social

It can be easy for people to become shut away from the rest of the world but you can find that your life is noticeably enriched when you take time to socialise and enjoy the company of others.
How to get a diagnosis with medical websites

How to get a diagnosis with medical websites

Exploding medical costs and the increasing intervention in the field of medicine by the parliament have caused a new trend to emerge in the 21st century. Whether this trend is good or bad depends upon your own medical knowledge. For those people with very little understanding of the human organism, it might not be the best solution.
What is NHS Community Healthcare?

What is NHS Community Healthcare?

Never has there been such a focus on the health and care of the individual as there has been since the 20th century. Televisions and computers are bringing people into the world of the have-nots, and the latter are discovering that many of their own people living in the country do not have good health nor the medical benefits that they need to acquire it.