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Preface

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Sheep hike

Object-based selectionObject-based selection::The role of attentional shifts

Dominique lamy & Howard egeth

P&P 2002

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.

Sheep spin

Object-based selection:Object-based selection:The role of attentional shifts

Dominique lamy & Howard egeth P&P 2002

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.

Green apples

Green apples

Apples for you

Apples are good.

An apple a day keeps the doctor away.

White apples

The White Computer

An apple story

This is an apple

• This is an apple computer power point.

Anna sui

Object-based Object-based selection:selection:

The role of attentional shifts

Dominique lamy & Howard

egeth

P&P 2002

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.

Pink circle

Leading, but not trailing, primes Leading, but not trailing, primes influence temporal order perceptioninfluence temporal order perception::

Further evidence for an attentional account of perceptual latency priming

Ingrid Scharlau 2002

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.

introductionintroduction

Little grass

Evidence for Split foci of attention in a priming

paradigm

Perception & Psychophsics Ingrid Scharlau (2004)

• 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

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