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Sampling frequency and eye-tracking measures : how speed affects durations, latencies, and more

Andersson, Richard LU ; Nyström, Marcus LU and Holmqvist, Kenneth LU (2010) In Journal of Eye Movement Research 3(3:6). p.1-12
Abstract
We use simulations to investigate the effect of sampling frequency on common dependent variables in eye-tracking. We identify two large groups of measures that behave differently, but consistently. The effect of sampling frequency on these two groups of measures are explored and simulations are performed to estimate how much data are required to overcome the uncertainty of a limited sampling frequency. Both simulated and real data are used to estimate the temporal uncertainty of data produced by low sampling frequencies. The aim is to provide easy-to-use heuristics for researchers using eye-tracking. For example, we show how to compensate the uncertainty of a low sampling frequency with more data and post-experiment adjustments of... (More)
We use simulations to investigate the effect of sampling frequency on common dependent variables in eye-tracking. We identify two large groups of measures that behave differently, but consistently. The effect of sampling frequency on these two groups of measures are explored and simulations are performed to estimate how much data are required to overcome the uncertainty of a limited sampling frequency. Both simulated and real data are used to estimate the temporal uncertainty of data produced by low sampling frequencies. The aim is to provide easy-to-use heuristics for researchers using eye-tracking. For example, we show how to compensate the uncertainty of a low sampling frequency with more data and post-experiment adjustments of measures. These findings have implications primarily for researchers using naturalistic setups where sampling frequencies typically are low. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
two-point measures, sampling frequency, simulation, saccadic latency, dependent variables, reliability, temporal error, one-point measures, eye-tracking measures
in
Journal of Eye Movement Research
volume
3
issue
3:6
pages
1 - 12
publisher
European Group for Eye Movement Research
external identifiers
  • WOS:000208816900006
ISSN
1995-8692
DOI
10.16910/jemr.3.3.6
language
English
LU publication?
yes
id
510d90dc-33ba-44aa-8146-c7ae66309866 (old id 1670061)
alternative location
https://bop.unibe.ch/index.php/JEMR/article/download/2300/3496
date added to LUP
2010-09-23 13:32:08
date last changed
2016-07-01 11:25:42
@misc{510d90dc-33ba-44aa-8146-c7ae66309866,
  abstract     = {We use simulations to investigate the effect of sampling frequency on common dependent variables in eye-tracking. We identify two large groups of measures that behave differently, but consistently. The effect of sampling frequency on these two groups of measures are explored and simulations are performed to estimate how much data are required to overcome the uncertainty of a limited sampling frequency. Both simulated and real data are used to estimate the temporal uncertainty of data produced by low sampling frequencies. The aim is to provide easy-to-use heuristics for researchers using eye-tracking. For example, we show how to compensate the uncertainty of a low sampling frequency with more data and post-experiment adjustments of measures. These findings have implications primarily for researchers using naturalistic setups where sampling frequencies typically are low.},
  author       = {Andersson, Richard and Nyström, Marcus and Holmqvist, Kenneth},
  issn         = {1995-8692},
  keyword      = {two-point measures,sampling frequency,simulation,saccadic latency,dependent variables,reliability,temporal error,one-point measures,eye-tracking measures},
  language     = {eng},
  number       = {3:6},
  pages        = {1--12},
  publisher    = {ARRAY(0xc9caee8)},
  series       = {Journal of Eye Movement Research},
  title        = {Sampling frequency and eye-tracking measures : how speed affects durations, latencies, and more},
  url          = {http://dx.doi.org/10.16910/jemr.3.3.6},
  volume       = {3},
  year         = {2010},
}