Task 3 Flashcards
(23 cards)
What is alerting in Posner’s model of attention?
Foundation for other attention. related to vigilance
What’s the neural underpinning of the alerting system?
Frontal & parietal regions + norepinephrine system
What is the orienting system in Posner’s model?
Selection of info from external sources
What is the neural underpinning of orienting system?
FEF, SC,SPL, pulvinar
dopamine cortical pathway
What is the executive system in Posner’s model of attention?
Regulate info from other systems
What is the neural underpinning of the executive system?
DL-PFC + Dorsal ACC
Describing the alerting task
Participants receive a cue to alert them that the target they have to respond is about to appear. But location of the target is not cued
Describe the orienting task
Participants receive an endogenous or exogenous cue to indicate where the target will appear. The cue can either predict a correct or incorrect location.
What is an exogenous cue?
A cue that appears in the peripheral field & draws automatic attention to the location
What is an endogenous cue?
It is a cue that directs an individual’s attention (e.g. an arrow) but does not automatically draw their attention to the location
Describe the flanker task
They have to press a button as fast as possible when the middle letter is an A & another button when the middle letter is B
Describe the stroop task
Name colour of the word
Describe the Simon task
Press right hand to upward arrow and left hand a down pointing arrow
What is selective attention?
involves scanning & orienting to specific stimuli while suppressing distractors
What is divided attention?
attending to two stimuli simultaneously
What is sustained attention?
related to vigilance & alertness
What is attentional control?
it is related to executive functions: control
What tasks are used to measure selective attention?
- Selective Filtering Tasks:
Dichotic listening task
Dichotic shadowing task - Selective Set tasks:
Visual search
Orienting tasks
What tasks can be used to measure sustained attention?
Continuous performance task
Signal detection theory tasks
What tasks can be used to measure divided attention?
Posner and Boei’s task
Shiffrin and Schneider’s task
What tasks can be used to measure attentional control?
Attentional Networks Task: Flanker, Stroop, Simon’s task
What are continuous performance tasks?
subject performs a constant-difficulty task for minutes or tens of minutes without interruptions.
e.g. TOVA, IVA & Corner’s CPT
What are signal detection tasks?
a task in which the observer is required to discriminate between trials in which a target stimulus (the signal) is present and trials in which it is not (the noise).
