Issues in Recognition for Sensory Systems Flashcards
What is relative judgement?
Comparing to something else in the world.
What is absolute judgement?
Compare to something in memory.
What is bottom-up processing?
Bottom-up processing is a type of information processing based on incoming data from the environment to form a perception. Information enters the eyes in one direction (input), and is then turned into an image by the brain that can be interpreted and recognized as a perception (output).
The outside data drive the system. Sensory inputs get registered onto a sensory memory, and then are processed at higher and higher levels until a match is finally found with something in long-term memory.
What is top-down processing?
In a top-down approach an overview of the system is formulated, specifying but not detailing any first-level subsystems. Each subsystem is then refined in yet greater detail, sometimes in many additional subsystem levels, until the entire specification is reduced to base elements.
In top-down processing, your beliefs, cognitions, and expectations in part drive the pattern recognition process. Some of this may be conscious, but some may also be unconscious.
Example for issues with top-down and bottom-up.
Example1: small cars hit more often from behind, since relative size is smaller (failure of top down)
Example 2.: altering spacing of pavement markings produced an illusion of acceleration, helped slow people down
Describe the reality-virtuality continuum.
Descripe design ramifications by sensory system.
What are cross modal design considerations?
Sensory systems can get mixed up or overide each other and cause mistakes to happen. People can make mistakes due to the sensory system making mistakes.
