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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
article number
11
publisher
Association for Research in Vision and Ophthalmology
external identifiers
  • scopus:84950132508
  • pmid:26605840
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
2016-04-01 13:35:19
date last changed
2020-09-13 04:53:48
@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.},
  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},
  doi          = {10.1167/15.15.11},
  volume       = {15},
  year         = {2015},
}