Higher Cognitive Function: Attention. Flashcards
What is simultagnosia?
Inability to ‘see’ more than one object at a time.
What is simultagnosia associated with?
Bilateral posterior parietal damage.
What are the 3 different types of attention? Describe each.
Selective - attention required to limit entry to a finite capacity processing system by selecting only a subset of all available info.
Divided - attention itself is a resource of limited capacity which can be divided between tasks.
Sustained - processing capacity and attentional capacity linked to arousal.
What is the difference between top-down and bottom-up attention directing mechanisms?
Top-down - influences include a person’s own intentions and expectations.
Bottom-up - influences directed by stimuli in the world that ‘catch’ our intention.
What are the two features of the posterior attention system?
Post. parietal - spotlight one spatial - disengage, move engage.
Post. temporal - spotlight 2 features of an object.
What is controlled by the anterior attention system?
Executive function.
Unilateral damage to parietal lobe(s) causes what?
Neglect and extinction.
Bilateral parietal damage causes what?
Balint syndrome.
