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Time course of precision in smooth-pursuit eye movements of monkeys.

Publication ,  Journal Article
Osborne, LC; Hohl, SS; Bialek, W; Lisberger, SG
Published in: J Neurosci
March 14, 2007

To evaluate the nature and possible sources of variation in sensory-motor behavior, we measured the signal-to-noise ratio for the initiation of smooth-pursuit eye movements as a function of time and computed thresholds that indicate how well the pursuit system discriminates small differences in the direction, speed, or time of onset of target motion. Thresholds improved rapidly as a function of time and came close to their minima during the interval when smooth eye movement is driven only by visual motion inputs. Many features of the data argued that motor output and sensory discrimination are limited by the same noise source. Pursuit thresholds reached magnitudes similar to those for perception: <2-3 degrees of direction, approximately 11-15% of target speed, and 8 ms of change in the time of onset of target motion. Pursuit and perceptual thresholds had similar dependencies on the duration of the motion stimulus and showed similar effects of target speed. The evolution of information about direction of target motion followed the same time course in pursuit behavior and in a previously reported sample of neuronal responses from extrastriate area MT. Changing the form of the sensory input while keeping the motor response fixed had significant effects on the signal-to-noise ratio in pursuit for direction discrimination, whereas holding the sensory input constant while changing the combination of muscles used for the motor output did not. We conclude that noise in sensory processing of visual motion provides the major source of variation in the initiation of pursuit.

Duke Scholars

Published In

J Neurosci

DOI

EISSN

1529-2401

Publication Date

March 14, 2007

Volume

27

Issue

11

Start / End Page

2987 / 2998

Location

United States

Related Subject Headings

  • Reaction Time
  • Pursuit, Smooth
  • Psychomotor Performance
  • Photic Stimulation
  • Neurology & Neurosurgery
  • Motion Perception
  • Male
  • Macaca mulatta
  • Eye Movements
  • Animals
 

Citation

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Osborne, L. C., Hohl, S. S., Bialek, W., & Lisberger, S. G. (2007). Time course of precision in smooth-pursuit eye movements of monkeys. J Neurosci, 27(11), 2987–2998. https://doi.org/10.1523/JNEUROSCI.5072-06.2007
Osborne, Leslie C., Sonja S. Hohl, William Bialek, and Stephen G. Lisberger. “Time course of precision in smooth-pursuit eye movements of monkeys.J Neurosci 27, no. 11 (March 14, 2007): 2987–98. https://doi.org/10.1523/JNEUROSCI.5072-06.2007.
Osborne LC, Hohl SS, Bialek W, Lisberger SG. Time course of precision in smooth-pursuit eye movements of monkeys. J Neurosci. 2007 Mar 14;27(11):2987–98.
Osborne, Leslie C., et al. “Time course of precision in smooth-pursuit eye movements of monkeys.J Neurosci, vol. 27, no. 11, Mar. 2007, pp. 2987–98. Pubmed, doi:10.1523/JNEUROSCI.5072-06.2007.
Osborne LC, Hohl SS, Bialek W, Lisberger SG. Time course of precision in smooth-pursuit eye movements of monkeys. J Neurosci. 2007 Mar 14;27(11):2987–2998.

Published In

J Neurosci

DOI

EISSN

1529-2401

Publication Date

March 14, 2007

Volume

27

Issue

11

Start / End Page

2987 / 2998

Location

United States

Related Subject Headings

  • Reaction Time
  • Pursuit, Smooth
  • Psychomotor Performance
  • Photic Stimulation
  • Neurology & Neurosurgery
  • Motion Perception
  • Male
  • Macaca mulatta
  • Eye Movements
  • Animals