Memory is the ability to encode, store, retrieve, and forget information over time. There are three main memory systems - sensory memory which briefly stores sensory information, short-term memory which can hold a limited amount of information for a short period of time, and long-term memory which stores information for the long-term. Memory is classified based on its physiological basis into explicit memory which is declarative memory of facts and experiences, and implicit memory which is nondeclarative memory of skills and habits. Attention is the cognitive ability to focus cognitive processing on a particular object, location, or attribute. There are different types of attention including sustained attention, selective attention, and alternating attention.

2.  Memory is the ability of the body to
capture, store and reproduce information.
 Memory functions:
 1.Encoding
 2.Storage
 3.Retrieval
 4.Forgetting

3. 1. Nervous system
2. Immune system
3. Genetic system

4. 1.Volume
2. Speed
3. Accuracy
4. Duration

5. By time of the storage (old)
1. Sensory memory
a)Iconic (0,25 sec.)
b)Echoic (3-4 sec.)
2. Short-term memory
3. Long-term memory

6. By time of the storage (new)
1. Short-term memory
2.Working memory
3. Long-term memory

7.  By the physiological basis
 1. Explicit (declarative) memory: of general
knowledge, facts, and experiences
(processed by the hippocampus)
 2. Implicit (nondeclarative) memory: of skills
and conditioned responses (processed by
other parts of the brain, including the
cerebellum)

8.  The ability of a person to concentrate
his "cognitive processes" on a single
object in order to study it.

9.  concentration,
 distribution,
 volume,
 switchability,
 stability.

10. 1) - voluntary attention
- involuntary attention
2) - Sustained attention - the ability to maintain a consistent
behavioral response during continuous and repetitive activity.
- Selective attention - the ability to maintain a behavioral or
cognitive set in the face of distracting or competing stimuli.
- Alternating attention - the ability of mental flexibility that
allows individuals to shift their focus of attention and move
between tasks having different cognitive requirements.
- Divided attention - refers to the ability to respond
simultaneously to multiple tasks or multiple task demands