Head-Mounted Eye-Tracking with Children: Visual Guidance of Motor Action Karen E. Adolph1, John M. Franchak1, Daryaneh Badaly1, Michael T. Smith1, & Jason S. Babcock2 Department of Psychology, New York University, 2Positive Science, LLC
Summary
Visual-Manual Control
• Children searched through an obstacle course to find hidden stars. • Every step taken up onto, down from, and over an obstacle was scored. • Coded if and when children fixated the obstacle in the 5 s prior to stepping.
Behavioral Codes:
Exemplar Timelines: Children picking up bowls in
g
ng ca
rry
pi as gr
re a
ch
pr oa
in
g
ch
in g
S#1
fo
kn
rk
ife
l w
kn
fo
bo
rk
w
ife
l
Action Eye Gaze at
pl e
l
0
1000
2000
g
p ca ing rry in g
g
gr
as
in ch re a
70
at m
Eye Gaze p cu
l
1000
w bo
0
nd
ha
el
od
e at
-1000
m
pl
l w
rk
fo
bo
-2000
2000
3000
Time to Grasp (ms)
Frequency
g tti n
bo w
se
bo w l
l
n oo sp
fo
se
rk
tti n
g
Action
-3000
• Fixated target object before grasping on 75% of reaches. • Objects were fixed at the moment of grasp 40% of the time.
60
50
50
40 30 20 10 0
1200 800 400 0
Pre-Grasp
Post-Grasp
• Fixated target object for longer before reaching than after.
40 30 20 10
0
1
2
3
4
5
6
Visual-Motor Lag (steps)
0
None
0
1000
2000
3000
4000
5000 None
Visual-Motor Lag (ms)
• Children fixated obstacles on only 62.5% of all steps. • The obstacle was fixated at the moment of footfall during 1 of 172 recorded steps (0.6%). Visual-motor Lag (steps)
1600
Fixation Duration (ms)
• Six 4- to 8- year-olds (M=7.1, SD=1.3) • Completed two tasks: – Visual-Manual Control: Arranged a table place setting to match a model. – Locomotor Guidance: Walked/ran/ climbed through an obstacle course to find hidden stars.
Step Over
70
60
Results:
Participants
Step Down
Results:
in in g pr oa ch
ac pl
Step Up
3000
Time to Grasp (ms)
Frequency
-1000
4
Visual-motor Lag (ms)
-2000
ap
S#2
w
rk
ife
-3000
• Wireless, head-mounted eye-tracker (Positive Science, LLC). • Records 2D eye movements during free locomotion.
bo
fo
kn
Apparatus
Locomotor Guidance
• Children walked back and forth repeatedly across a cluttered room selecting items from an assortment of cups, bowls, plates, placemats, napkins, and utensils. • The target and duration of eye and manual movements were coded during 3 s intervals prior to and following object contact.
ap
• Vision is used to plan and guide motor actions. • Previous work with head-mounted eye-tracking shows that adults’ eye fixations in everyday tasks are directed toward task-relevant locations (Land et al., 1999; Hayhoe et al., 2003). • In the current study, we assessed children’s eye movements during visual-manual and locomotor tasks. • Children relied heavily on foveal vision while reaching for objects, but not while stepping over obstacles.
Acknowledgements: NYU Infant Action Lab, NIHCD Grant No. 33486
3. irte-Tgur fmiT iciviriet ifTrwr .er I. 4. .1f-tz-qrfirdr ... Displaying Psycho-Social and Educational Implication of Children with Visual Impairment.PDF. Page 1 of 4.
from McMaster university and Keith Hayes from Parkwood Hosyital in. London, ontario. Thank you very much for your thoughtful assistance with this work. To cindy ..... development (Reed, 1989; Woollacott, Shumway-Cook, & Williams,. 1989). The action Â
"Melvin says 'shit dog.'" 'Would you do everything your mama's boyfriend does?" "Melvin can drive," Tammynette said. "I'd like to drive." I got out my penknife and worked the splinter from under Moon- bean's nail while she jabbered to Tammynette abou
Laura: I have been using eyetracking for three years in a. Web based context. ... Kerry: My background is in computer science research, and as part of my PhD ... Page 2 ... dilation, which taps into the degree of a user's interest or arousal in the .
Oct 23, 2009 - contributed social media on Youtube, Flickr, Zooomr, etc. These media .... photos with more than one tag and these tags span a broad spectrum of the .... Figure 10: The top results of different ranking meth- ods of query ...
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item. Helping ...
Sep 23, 2010 - Their results. revealed a significant negative correlation between reaction. time and number of errors and the numerical difference. between the two numbers. In other words, the larger the. numerical difference is between two numerical
Spatial Language, Visual Attention, and Perceptual Simulation. Kenny R. ... The results of both the acceptability rating data and the eye tracking data show that.
Down Syndrome, speech recognition, and educational software. 1. INTRODUCTION. Children with Down Syndrome suffer from many difficulties such as brain damage, hearing loss, health problems, and learning ... The purpose of this project is to study the
intervention (PEI) grant through the California Mental Health Services Authority ... depression, anxiety, cognitive delays, and difficulties in school.3 Girls between ... According to the Appleseed Network, âthe children of incarcerated parents.
Whoops! There was a problem loading more pages. Retrying... Using eyetracking to study numerical cognition-the case of the numerical ratio effect.pdf. Using eyetracking to study numerical cognition-the case of the numerical ratio effect.pdf. Open. Ex
