On the structure of measurement noise in eye-tracking
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On the structure of measurement noise in eye-tracking. / Coey, Charles A.; Wallot, Sebastian; Richardson, Michael J. et al.
In: Journal of Eye Movement Research, Vol. 5, No. 4, 04.09.2012, p. 1-10.Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - On the structure of measurement noise in eye-tracking
AU - Coey, Charles A.
AU - Wallot, Sebastian
AU - Richardson, Michael J.
AU - van Orden, Guy
N1 - National Science Foundation: BCS #0642716, BCS #0843133, DHB #0728743
PY - 2012/9/4
Y1 - 2012/9/4
N2 - Past research has discovered fractal structure in eye movement variability and interpreted this result as having theoretical ramifications. No research has, however, investigated how properties of the eye-tracking instrument might affect the structure of measurement variability. The current experiment employed fractal and multifractal methods to investigate whether an eye-tracker produced intrinsic random variation and how features of the data recording procedure affected the structure measurement variability. The results of this experiment revealed that the structure of variation from a fake eye was indeed random and uncorrelated in contrast to the fractal structure from a fixated, real human eye. Moreover, the results demonstrated that data-averaging generally changes the structure of variation, introducing spurious structure into eye movement variability.
AB - Past research has discovered fractal structure in eye movement variability and interpreted this result as having theoretical ramifications. No research has, however, investigated how properties of the eye-tracking instrument might affect the structure of measurement variability. The current experiment employed fractal and multifractal methods to investigate whether an eye-tracker produced intrinsic random variation and how features of the data recording procedure affected the structure measurement variability. The results of this experiment revealed that the structure of variation from a fake eye was indeed random and uncorrelated in contrast to the fractal structure from a fixated, real human eye. Moreover, the results demonstrated that data-averaging generally changes the structure of variation, introducing spurious structure into eye movement variability.
KW - Psychology
KW - Data averaging
KW - Eye-tracking
KW - Fractal structure
KW - Measurement noise
UR - http://www.scopus.com/inward/record.url?scp=84916639889&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/5fbce0fd-b1ae-3f3a-a448-39fcd1320ba3/
U2 - 10.16910/jemr.5.4.5
DO - 10.16910/jemr.5.4.5
M3 - Journal articles
AN - SCOPUS:84916639889
VL - 5
SP - 1
EP - 10
JO - Journal of Eye Movement Research
JF - Journal of Eye Movement Research
SN - 1995-8692
IS - 4
ER -