PERCEPTUAL PROCESS

Sensory, attentional and perceptual process.

CHAPTER-5

BY: NITIKA VERMA

CLASS: 11TH –C

ROLL NO: 45

#PERCEPTION

The process by which we recognise, interpret, or give meaning to the information provided by sense organs is called PERCEPTION.

OR Perception is the organisation,

interpretation, and identification of sensory information in order to represent and understand the enviornment.

SEVERAL ASPECTS OF PERCEPTION

1. The process of receiving stimuli :

It is by, •Seeing •Hearing •Smelling •Tasting •Touching

Top-Down Processing: Information processing guided by higher-level mental processes.As when we construct perceptions drawing on our

experience and expectations. Bottom-Up Processing: Analysis that begins with the

sense receptors and works up to the brain’s integration of sensory information

Conclusion: Perception is a complex process by

which an individual selectively absorbs or assimilates the stimuli in the environment, cognitively organizes it in a specific fashion and then interprets the information to give a meaning to the environment

THE PERCEIVER Human beings are not just mechanical

and passive recipients of stimuli from the external world. They are CREATIVE BEINGS, and try to understand the external world in their own ways.

THE PERCEIVER#MOTIVATION

-The needs and desires of a perceiver strongly influence his/her perception. One can fulfil the needs and desire through various ways.

-One way is to perceive objects as a picture as something which will satisfy the needs.

THE PERCEIVER#EXPECTATIONS OR PERCEPTUAL SETS

This phenomenon of perceptual familiarisation or perceptual generalisation reflects a strong tendency to see what we expect to see even when the results do not accurately reflect external reality.

EXAMPLE: If your milkman delivers your milk daily at 5:30AM , any knocking at the door at that time is likely to be perceived as the presence of the milkman even if it is someone else.

COGNITIVE STYLES It refers to a consistent way of dealing

with our enviornment. It significantly affects the way we perceive the enviornment.

-Most extensivly used in studies is : 1. FIELD INDEPENDENT 2. FIELD DEPENDENT

#CULTURAL BACKGROUND AND EXPERIENCES

Different experiences and learning opportunities available to people in different cultural settings also influence their perception.

-People coming from pictureless enviornment fail to recognise objects in pictures.

GESTALT THEORY

• Gestalt theory focuses on the mind’s perceptive processes

• The word "Gestalt" has no direct translation in English, but refers to "a way a thing has been gestellt ; i.e., ‘placed,’ or ‘put together’";

• common translations include "form" and "shape"

GESTALT THEORY• Gestalt theorists

followed the basic principle that the whole is greater than the sum of its parts.

• In viewing the "whole," a cognitive process takes place – the mind makes a leap from comprehending the parts to realizing the whole.

THE WHOLE IS GREATER THAN THE SUM OF ITS PARTS.

1. The principle of proximity2. The principle of similarity3. The principle of continuity4. The principle of smallness5. The principle of symmetry6. The principle of surroundedness7. The principle of closure

PRINCIPLES OF PERCEPTUAL ORGANISATION

THE PRINCIPLE OF PROXIMITY..

• The Gestalt law of proximity states that "objects or shapes that are close to one another appear to form groups“

• Even if the shapes, sizes, and objects are radically different, they will appear as a group if they are close together.

THE PRINCIPLE OF SIMILARITY..

• Similarity occurs when objects look similar to one another. People often perceive them as a group or pattern.

• Our mind groups similar elements to an entity.• The similarity depends on form, color, size and

brightness of the elements.

THE PRINCIPLE OF CONTINUITY..

• Continuation occurs when the eye is compelled to move through one object and continue to another object.

• "tend to continue shapes beyond their ending points"

THE PRINCIPLE OF SMALLNESS.. According to this principle, smaller

areas tend to be seen as figures against a larger background

THE PRINCIPLE OF SYMMETRY.. The principle suggest that

symmetrical areas tend to be seen as figures against asymmetrical backgrounds

THE PRINCIPLE OF SURROUNDEDNESS..

According to this principle, the areas surrounded by others tend to be perceived as figures.

THE PRINCIPLE OF CLOSURE..• Gestalt theory seeks completeness; when

shapes aren’t closed, we tend to add the missing elements to complete the image

• Although the panda is not complete, enough is present for the eye to complete the shape.

• When the viewer's perception completes a shape, closure occurs.