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Manual tracking enhances smooth pursuit eye movements

Niehorster, Diederick C LU ; Siu, Wilfred W. F. and Li, Li (2015) In Journal of Vision 15(15).
Abstract
Previous studies have reported that concurrent manual tracking enhances smooth pursuit eye movements only when tracking a self-driven or a predictable moving target. Here, we used a control-theoretic approach to examine whether concurrent manual tracking enhances smooth pursuit of an unpredictable moving target. In the eye-hand tracking condition, participants used their eyes to track a Gaussian target that moved randomly along a horizontal axis. In the meantime, they used their dominant hand to move a mouse to control the horizontal movement of a Gaussian cursor to vertically align it with the target. In the eye-alone tracking condition, the target and cursor positions recorded in the eye-hand tracking condition were replayed, and... (More)
Previous studies have reported that concurrent manual tracking enhances smooth pursuit eye movements only when tracking a self-driven or a predictable moving target. Here, we used a control-theoretic approach to examine whether concurrent manual tracking enhances smooth pursuit of an unpredictable moving target. In the eye-hand tracking condition, participants used their eyes to track a Gaussian target that moved randomly along a horizontal axis. In the meantime, they used their dominant hand to move a mouse to control the horizontal movement of a Gaussian cursor to vertically align it with the target. In the eye-alone tracking condition, the target and cursor positions recorded in the eye-hand tracking condition were replayed, and participants only performed eye tracking of the target. Catch-up saccades were identified and removed from the recorded eye movements, allowing for a frequency-response analysis of the smooth pursuit response to unpredictable target motion. We found that the overall smooth pursuit gain was higher and the number of catch-up saccades made was less when eye tracking was accompanied by manual tracking than when not. We conclude that concurrent manual tracking enhances smooth pursuit. This enhancement is a fundamental property of eye-hand coordination that occurs regardless of the predictability of the target motion. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Vision
volume
15
issue
15
publisher
Association for Research in Vision and Ophthalmology
external identifiers
  • scopus:84950132508
ISSN
1534-7362
DOI
10.1167/15.15.11
language
English
LU publication?
no
id
b4a510ec-4f5b-4a06-92cf-2efde4754080 (old id 8310325)
date added to LUP
2016-02-09 08:10:46
date last changed
2017-11-13 16:32:05
@article{b4a510ec-4f5b-4a06-92cf-2efde4754080,
  abstract     = {Previous studies have reported that concurrent manual tracking enhances smooth pursuit eye movements only when tracking a self-driven or a predictable moving target. Here, we used a control-theoretic approach to examine whether concurrent manual tracking enhances smooth pursuit of an unpredictable moving target. In the eye-hand tracking condition, participants used their eyes to track a Gaussian target that moved randomly along a horizontal axis. In the meantime, they used their dominant hand to move a mouse to control the horizontal movement of a Gaussian cursor to vertically align it with the target. In the eye-alone tracking condition, the target and cursor positions recorded in the eye-hand tracking condition were replayed, and participants only performed eye tracking of the target. Catch-up saccades were identified and removed from the recorded eye movements, allowing for a frequency-response analysis of the smooth pursuit response to unpredictable target motion. We found that the overall smooth pursuit gain was higher and the number of catch-up saccades made was less when eye tracking was accompanied by manual tracking than when not. We conclude that concurrent manual tracking enhances smooth pursuit. This enhancement is a fundamental property of eye-hand coordination that occurs regardless of the predictability of the target motion.},
  articleno    = {11},
  author       = {Niehorster, Diederick C and Siu, Wilfred W. F. and Li, Li},
  issn         = {1534-7362},
  language     = {eng},
  number       = {15},
  publisher    = {Association for Research in Vision and Ophthalmology},
  series       = {Journal of Vision},
  title        = {Manual tracking enhances smooth pursuit eye movements},
  url          = {http://dx.doi.org/10.1167/15.15.11},
  volume       = {15},
  year         = {2015},
}