Evaluation of Visual Perception and Cognitive Functions Flashcards
defined as the total process responsible for their reception and cognition of visual stimuli
Visual perception
visual component defined as the process of extracting and organizing information from the environment (sensory function)
Visual receptive component
Visual component that provides the capacity to organize, structure and interpret visual stimuli, giving meaning to what is seen
Visual Cognitive Component
involves the selection of visual input
Visual attention
involves the integration of visual information with previous experience
visual memory
type of memory
permanent storehouse that has expansive capacity
Long term memory
type of memory
can only hold limited number of unrelated bits of information for approx 30 seconds
short term memory
ability to detect features of stimuli for recognition, matching and categorization
Visual discrimination
ability to note key features of a stimulus and relate them to memory
Recognition
ability to note the similarities among visual stimuli
Matching
ability mentally to determine a quality or category by which similarities and differences can be noted
Categorization
“What things are”
- implicated in the visual identification of objects by color, texture, shape and size
Object Vision
“Where things are”
- concerned with the visual location of objects in space
spatial vision
used when visual form information should be processed and stored in an abstract nonspecific manner
Abstract visual system
it provides specific processing to distinguish different instances of a type of form
Specific Visual Form
the recognition of forms and objects as the same in various environments, position and sizes
-enables the person to make assumption regarding the size of an object even though visual stimuli may vary under different circumstances
Form constancy
Form constancy improves at ____ age and less improve at ____ age.
6-7 years old
8-9 years old
ability to recognize triangle as a shape in a pizza
form constancy
identification of forms or objects from incomplete representation of an object
Visual closure
the differentiation between foreground or background forms and objects
-ability to separate essential data from distracting surrounding information
Figure ground discrimination
Figure ground discrimination improves at ____ age and stabilizes at ____ age
3- 5 years old
6-7 year old
age where spatial relationship improves
10 years old
it is the determination of spatial relationship of figures and objects to oneself or other forms and objects
- understands directional language concepts such as in, out, up, down, left, right, front, back, between
Position in space
determination of the relative distance between objects , figures or landmarks and observes changes in planes of surface
this ability provides an awareness of how far away something is (e.g. walking stairs)
Depth perception
