Summary: Consciousness & Control
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Lecture 1: Attention (hannes)
This is a preview. There are 87 more flashcards available for chapter 12/11/2019
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What is the difference between overt and covert attention?
Overt attention --> Change body perspective to stimuli
Covert attention --> Change attention without external changes, while maintaining fixation -
What happens during the cocktailparty effect?
Capture through unattended infromation though something that stands out. E.g. your name -
What are the findings from the dichotic listening experiment?
People can't reproduce an unattended auditory stream after attending another stream simultaniously. -
What are the findings from the Posner cueing task?
1. Attention improves reaction time
2. Larger visual evoked action potentials in P1 -
What does it mean when a cue 'captures' attention?
A sudden cue 'claims' your attention to a certain location on a screen, even when you are aware that this location is mostly invalid. -
Does attention always improve your reaction time? If not, why?
No, the posner cueing task showed that when you delay the target after showing a prime (which captures your attention), your reaction time will decrease (read: gets slower) when this interval is > 300 ms. Why? --> action potential recently fired, and need some time to recover. -
Explain the object based attention concept?
Research has shown that when cueing in/on an object, leads to faster response when the target is on the same object then when the target is on a different object. This only occurs when the object are actually perceived. -
Lecture 1: Attention
This is a preview. There are 91 more flashcards available for chapter 12/11/2019
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What does the Posner cuing task show?
- Attention --> Faster reation times
- Larger amplitude action potentials -
What is inhibition of return in an attentional capture task?
Time between prime & Target > 300ms -->
Valid trials longer RT
Invalid trials shorter RT -
Attentional capture & Inhibition of return are expressed at the neural level as:
- Attentional capture: Increase in sensory responses
- Inhibition of return: Decrease in sensory responses
These have the same spatial distribution as voluntary attention effects.
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