Memory

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Definition of memory:


❖ Memory is defined as the ability to store and retrieve information, it is therefore a processing system information.

According to Larousse; “memory is a biological and psychic activity which allows us to retain past experiences”.

- It is also the ability to memory

For example:

It involves entering some thing we saw, like a registered telephone number, and to convert it into a form that we can keep find and use.


The three memory levels:

Since the late 1960s, most psychologists have agreed on the existence of three memory levels which are determined by the more or less prolonged storage of information with the model .

                 R.Shiffrin            R.Atkinson             

1/The first memory level :

The information register MS sensory
Memory / Sensory Register also called buffer, or memory at very short duration.It comes from our senses, mainly vision (memory,iconic).
The duration of the information (images) from iconic memory (visual) varies approximately from 500 ms (half a second) at 2 seconds depending on the individual, the richness of the image and according to the   circumstances. Neisser, 1976.

2/The second memory levels:

 Short term  Memory SLT 
 It plays a central role in the fulfillment of our tasks daily, it is therefore the key to attention and concentration.  
For example: phone number that we forget or a book code that we forget at the library.
- It is a fragile memory that is sensitive to interruption and interference.It is a memory that is easily overloaded. It therefore has a limited capacity
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3/The third memory levels:

long-term memory LTM
Relevant information then enters long-term memory (LTM), feelings and experiences images, thoughts, where representations of facts.
Long-term memory isthe most important and the most complex of systems memory.
- It allows information to be retained permanently.









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