What is Adaptation

adaptation

2004

Adaptation in common sense is a system reaction of organism which provides possibility of all kinds of social activity and vital functions . In other sources we can find a definition that adaptation is stability in the process of changes in conditions of environment . It can be also called plastic accommodation of internal changes to external changes as well . Processes of adaptation are directed at supporting of stability inside of organism and between organism and environment and are connected with self-preservation of functional level of self-regulated system and with

choice of functional strategy of achievement the aim . By psychical adaptation we understand continuous process of active adaptation for human psychics to conditions of physical and social environment which surrounds him , and also the result of this process . To describe the process of adaptation we use also term adaptation abilities . Psychical adaptation include level of factual adjustment of a person , level of his social status and self-feeling of satisfaction or dissatisfaction by himself and his life

Sensory adaptation is explained by change in ability to react at changes in environment with help of sensory system , basing at the average level of stimuli , which surrounds us . For example , we feel the temperature of water as cold for the first several minutes , and later we find it not so cold , although temperature didn 't change : it is at the same level , but our organism was adapted to this temperature and our receptors found this temperature as normal . It is adaptation

When we are in perfume shop and smelling different kinds of perfumes our nose looses it sensitiveness after change of several smells - we actually feel odors but we are adapted to them and we are unable to tell the difference between them

When we walk in the evening , our eyes are gradually adapt to darkness and while the sun sets , we can see in the darkness - but when we go out from room with bright light into the darkness , it takes time to adapt to darkness after change of exposure

Sensory systems are nervous mechanisms , which serve as receivers of signals , informing about changes in environment , which surrounds the subject (extroreception ) and in his organism (intrareception . We got used to distinguish five main external sensory systems , which receive sensory information : cutaneous sensitiveness (touch , sight , smell taste , and hearing . These senses present out basis of knowledge about environment . In fact , we have more of these systems (only cutaneous sensitiveness causes sense of cold , pressure , hot , pain , etc . Sensory systems consist of receptors , nervous conductors and nerve centers . Each sensory system provides sensation which is peculiar to it only

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adaptation

DATE : September 12 , 04...