2. Sensation
Sensations can be defined as the passive process of bringing information from the outside world into the body
and to the brain. The process is passive in the sense that we do not have to be consciously engaging in a "sensing"
process.
3. Perception
Perception can be defined as the active process of selecting, organizing, and interpreting the information
brought to the brain by the senses.
6. Approaches of perception
Bottom-Up (Stimulus- Driven) Perception
Physical characteristics of stimulus drive perception.
Top-Down (Goal-Driven) Perception
Knowledge, expectations, or thoughts influence perception.
Interactive Perception
Perception is driven by both at the same time.
7. Bottom-up perception
Direct Perception
Template Theories
Feature- Matching Theories
Recognition by Component Theories
13. Object perception
Viewer- Centered
Individual stores the way the object looks to him or her.
The shape of the object changes, depending on the angle from which ones look at it. A number of views of the
object are stored, and when ones try to recognize an object, ones have to rotate that object in his/her mind until it
fits one of the stored images.
Object- Centered
Individual stores a representation of the object, independent of its appearance to the viewer.