Cognition means:

Cognition is a term referring to the mental processes involved in gaining knowledge and comprehension. These processes include thinking, knowing, remembering, judging and problem-solving. These are higher-level functions of the brain and encompass language, imagination, perception, and planning.

Cognition functions:

• Attention
• Concentration
• Memory

Thinking Operations:

• Assertiveness
• Imagination and creativity
• Initiation of an activity
• Ability to follow instructions
• Sequencing
• Organization and planning
• Judgment
• Problem solving
  

Perception means:

Perception in simple term is how people see things Perception may be defined as the process by which an individual selects, organizes and interprets stimuli into a meaningful and coherent picture of the environment in which he lives.

Perception:

• Figure ground perception
• Orientation to space
• Topographical orientation
• Body image
• Right and Left discrimination
• Colour perception
• Size perception
• Shape perception
• Form constancy
• Depth perception
• Spatial orientation