cued recognition task i slc-buyun xu
TRANSCRIPT
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?