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EXTERNAL-TO-VEHICLE DRIVER DISTRACTION
GLOSSARY
'Bottom Up' Perception: Situations where information is brought to attention involuntarily.
Cognitive Overload: Refers to situations where the subject is overloaded with too much information. 'Stress'.
Cognitive Underload: Refers to situation where the subject does not have access to adequate levels of information. 'Boredom'.
Endogenous attention: Voluntary orienting response (cf. 'top down' perception)
Exogenous attention: Reflexive (automatic) orienting response (cf. 'bottom up' perception)
Saccadic: Saccadic eye movements are brief movements of the eye, normally lasting a third of a second or less. This is the normal way for the eye to 'sample' the visual environment.
Task Unrelated Imagery and Thought (TUIT): Daydreaming (sometimes shortened to Task Unrelated Thought: TUT).
' Top Down' Perception: Situations where information is voluntarily brought to attention.
Yerkes-Dodson Law: The law that defines the relation of arousal to task performance.
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