cued recognition task i slc-buyun xu

Cued Recognition TaskMeasuring the Temporal

Dynamics of Social Cue Processing

Buyun Xu, University of VictoriaJames Tanaka, University of Victoria

How to Study Social Cue Processing

T

Time

Time

Valid Cueing:

Invalid Cueing:

F

SOA

Cue Selection

Cue Following

Object Recognition ? ?

?

?

?

Looking at you… Not looking at you…

Looking at you… Not looking at you…

Head Direction and Gaze Direction

F

Peripheral Onset Effect

DF H

Distractor

Three Modifications

• Head turns

• Cues not preselected

• Distractors

The Cued Recognition Task

•Task: Square or Circle?

•Target and Distractors

•On one hand: Target (Square or Circle)

•The other hand: Distractor (Triangle)

•Size: 6*6 degree

•Cue: Head-turn, not predictive

600 or 1000ms

SOA0 ms, 105 ms, 300ms,

600ms or 1005 ms

Until Response

Valid

Invalid“S” for Square“C” for Circle

1000ms

Cued Recognition Task

Does distractors have effects?

600 or 1000ms

0 ms, 105 ms, 300ms, 600ms or 1005 ms

Until Response

“S” “C”

1000ms

No

n-D

istr

acto

rD

istr

acto

r

Valid

Invalid

Valid

Invalid

Non-Distractor, Valid, Short SOA

Distractor, Invalid, Long SOA

Distractor vs. Non-Distractor

450

500

550

600

650

0 105 300 600 1005

Valid

Invalid

450

500

550

600

650 Non-Distractor

Distractor

****

**** ** **

Xu, Tanaka, Mineault, 2012

What’s Really Going on?

Eye Tracking

Circle or

Square?

Cueing Period

Recognition Period

SOA RT

105 ms

300 ms

600 ms

1005 ms

AOI * SOA

0%

5%

10%

15%

20%

25%

30%

35%

40%

45%

105 300 600 1005

Face

Gazed

NotGazed

Middle

The 1005 ms of SOA3 Fixations on average…

The 1st Fixation (n=6788)

The 2nd Fixation (n=2865)

The Rest (n=1225)

Ultimate Goal

Measure social cue processing of children with Autism Spectrum Disorder

Acknowledgments

Allison McGerrigle

iSLC, TDLC, PEN

CSC

Kristy Mineault

QUESTIONS?