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3. Sheep hike

4. Object-based selectionObject-based selection::
The role of attentional shifts
Dominique lamy & Howard egeth
P&P 2002

5. 5
introductionintroduction
• Space-based viewSpace-based view
– Visual attention is directed to regions of
space.
• Object-based viewObject-based view
– Attention is directed to perceptual groups.

6. Sheep spin

7. Object-based selection:Object-based selection:
The role of attentional shifts
Dominique lamy & Howard egeth P&P 2002

8. introductionintroduction
• Space-based viewSpace-based view
– Visual attention is directed to regions of
space.
• Object-based viewObject-based view
– Attention is directed to perceptual groups.

9. Green apples

10. Green apples

11. Apples for you
Apples are good.
An apple a day keeps the doctor
away.

12. White apples

13. The White Computer
An apple story

14. This is an apple
• This is an apple computer power
point.

15. Anna sui

16. Object-based selection:Object-based selection:
The role of attentional shifts
Dominique lamy & Howard egeth
P&P 2002

17. Introduction
• Space-based viewSpace-based view
– Visual attention is directed to regions of space.
• Object-based viewObject-based view
– Attention is directed to perceptual groups.

18. Pink circle

19. Leading, but not trailing, primes influenceLeading, but not trailing, primes influence
temporal order perceptiontemporal order perception::
Further evidence for an attentional account of
perceptual latency priming
Ingrid Scharlau 2002

20. introductionintroduction
• Presenting a masked prime leading a
target influences the perceived onset of
the masking target.
• Asynchronous updating modelAsynchronous updating model
– The prime initiates attentional allocation
toward its location, which renders a trailing
target at the same place consciously
available earlier.

21. introductionintroduction

22. Little grass

23. Evidence for Split foci of
attention in a priming
paradigm
Perception & Psychophsics
Ingrid Scharlau (2004)

24. • Most models of visuospatial attention
include the notion that attention is
dedicated to a single location in space.
• Under appropriate circumstances,
attention may be allocated to
noncontiguous locations.
Introduction

25. Introduction
• Attention
Spotlight theorySpotlight theory 探照燈
an area of defined size is attended to.
Zoom lens modelZoom lens model 伸縮鏡頭模型
the width of the focus can be adjusted to the
task demands.
Split attentionSplit attention 注意力分裂