Chapter 5 Flashcards
Sensation and Perception
Sensation
- Processing of basic information from
the external world via receptors in the
sense organs and brain
Sensation and Perception
Perception
Process of organizing and interpreting
sensory information about the
world around us
Vision
Preferential-looking
technique
Method for studying visual attention in infants
- Show two patterns/two objects–is there a
preference? - Modern version automatic eye
tracker
Habituation
Visual Acuity and Color Perception
Visual acuity
measures the sharpness of visual discrimination in infants
* if they can tell the difference between Simple versus complex patterns
Contrast sensitivity definition
what is this due to?
infants cant tell a difference between light blue and blue but instead can tell difference ebwteen black and white since they are so different from eachtoher
- Due to cones
Cone cells
Infant cant tell the difference between colors that much(Contrast sensitivity ) because of the immarituy of the cone cells
Cone cells are
*Light-sensitive neurons
The immairty of these cones affect infant vision (20/120 birth vision)
cones are not fully developed
Visual Acuity and Color Perception
Color perception appears at __
months of age
___ months color starts developing fully
infants at __ month scan the perimeter of the face and at __ month they start scanning the actual face
2
1-8
1 month
2 month
A Closer Look Infants’ Face Perception
Perceptual narrowing
6-month-olds: discriminate
between __
9-month-olds: ___
infants become face specialists, better at discriminating amongst the kinds of faces that are frequently experienced in their environments.
good at perceiving human and monkey faces,
only human face discrimination
(specialist)
Object Perception
Perceptual constancy
Perceive objects as constant size,
shape, color, in spite of physical
differences in retinal image of
object
* Children have size constancy;
experience not necessary
Object Perception
Object segregation
Bascically can you seprate ojects. Do you know where an object begins and ends with and wihtout gaps.
Example baby cant tell that if a cup is stacked a plate, it cant tell it two different objects ebacsue it doesnt have experience with those objects
properties; culture also plays a role
Object Knowledge
Object Permanence
Object continues to exist
even when no longer in sight
* Not evident from birth
- Violation-of- expectancy
procedure
Infants are shown
an event that should
evoke surprise or
interest.
Depth Perception
Optical expansion
It looks like the size of the object is
___ as the object
____
Visual image of an object
increases in size as the object
comes toward us
* Background is occluded
Depth Perception
Binocular disparity
Because of the distance in between our eyes
they
Because of the distance in between our eyes
they both send different
signals to the brain
Depth Perception
Stereopsis
the closer the object is?
the closer an obejct, the more u can see the difference ebtween the and vise versa