Saccadic adaptation to moving targets

Katharina Havermann, Robert Volcic, Markus Lappe

Research output: Contribution to journalArticle

Abstract

Saccades are so called ballistic movements which are executed without online visual feedback. After each saccade the saccadic motor plan is modified in response to post-saccadic feedback with the mechanism of saccadic adaptation. The post-saccadic feedback is provided by the retinal position of the target after the saccade. If the target moves after the saccade, gaze may follow the moving target. In that case, the eyes are controlled by the pursuit system, a system that controls smooth eye movements. Although these two systems have in the past been considered as mostly independent, recent lines of research point towards many interactions between them. We were interested in the question if saccade amplitude adaptation is induced when the target moves smoothly after the saccade. Prior studies of saccadic adaptation have considered intra-saccadic target steps as learning signals. In the present study, the intra-saccadic target step of the McLaughlin paradigm of saccadic adaptation was replaced by target movement, and a post-saccadic pursuit of the target. We found that saccadic adaptation occurred in this situation, a further indication of an interaction of the saccadic system and the pursuit system with the aim of optimized eye movements.

Original languageEnglish (US)
Article numbere39708
JournalPLoS One
Volume7
Issue number6
DOIs
StatePublished - Jun 29 2012

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Eye movements
Saccades
eyes
learning
Eye Movements
Feedback
Sensory Feedback
Ballistics
Learning
Control systems
Research

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Saccadic adaptation to moving targets. / Havermann, Katharina; Volcic, Robert; Lappe, Markus.

In: PLoS One, Vol. 7, No. 6, e39708, 29.06.2012.

Research output: Contribution to journalArticle

Havermann, Katharina ; Volcic, Robert ; Lappe, Markus. / Saccadic adaptation to moving targets. In: PLoS One. 2012 ; Vol. 7, No. 6.
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