1. Genalin Lagman Taguiam Spring 2012-2013
Perception
Genalin Lagman Taguiam
Spring

2. Course objective
At the end of the week’s activity, the student should be able to:
describe components of perception
apply knowledge on psychological concepts (perception) in the care of patients

3. What do you see?

4. Perception
Involves the translation of information acquired by our senses into meaningful experience
Form a coherent representation or model of the world within which an organism dwells
Use that representation to solve naturally occurring problems, such as navigating, grasping and planning

5. Perception
Can be thought of as continually updating and maintaining an internal model of environment within which we live
It is via this model that we operate functionally and safely in our environment

6. Perception Five major functions of the perceptual system Attention
Determining which part of the sensory environment to attend to
Localizing
Determining where objects are
Recognizing
Determining what objects are
Abstracting the critical information from objects
Keeping the appearance of objects constant

7. Perception
ATTENTION
Used to screen out the vast amount of information impinging on us at any given time from the environment
Let through only the small amount of information that is relevant to carrying the task at hand

8. Perception Selective Attention
Involves deciding which information to screen out and which to allow through for further processing.
Mostly involve sense of vision and audition
Vision
Eye fixations are on more informative parts of a scene
Audition
Direction from which the sound is coming and voice characteristics of the speaker

9. What do you see?

10. Perception Neural Basis of Attention Posterior system
Involves the parietal, occipital and temporal lobes, along with some subcortical structures
Represents the perceptive features of an object, such as its location in space, its shape and color

11. Perception Neural Basis of Attention Anterior system
Involves the frontal lobe along with a subcortical structure
Controls when or how these features will be used for selection
Known as the “chief executive officer” of selective attention

12. Perception Localizing
Involves determining an object’s position in the up-down and left-right dimensions.
Requires that we know the distance of an objects from us
Known as “DEPTH PERCEPTION”
Requires that we know which direction the object is moving

14. Perception Recognizing
Requires assigning an object to a category and is based mainly on its shape
In early stages of recognition, the visual system uses retinal information to describe the object in terms of its features like lines and angles
Neurons that detect such features have been found in the visual cortex

15. Perception Recognizing
In later stages of recognition, the system matches the description of an object with shape descriptions stored in memory to find its best match

16. Perception

17. Perception

18. Perception Abstraction
Process of converting the raw sensory information acquired by the sense organs into abstract categories that are prestored in memory
Abstracted information takes less storage space and is therefore faster to work with than raw information

19. Perception Perceptual constancies
Refer to visual system’s effort to perceive an object’s innate physical characteristics, such as size, shape and color
To keep the appearance of the objects the same
even though the sensory representations of these characteristics may vary

20. References
Kalat, J. W. (2008). Introduction to Psychology 8th Edition. (pp ; ) USA: Thomson Learning, Inc
Smith, E., Nolen-Hoeksema, S., Fredrickson, B., & Loftus, G. (2003). Atkinson's and Hilgard's Introduction to Psychology 14th Edition. (pp ) Singapore: Thomson Learning.