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Biological Cybernetics

, Volume 82, Issue 5, pp 391–399 | Cite as

Modelling of congenital nystagmus waveforms produced by saccadic system abnormalities

  • David S. Broomhead
  • Richard A. Clement
  • Mark R. Muldoon
  • Jonathan P. Whittle
  • Columba Scallan
  • Richard V. Abadi

Abstract.

 Models of the mechanisms of normal eye movements are typically described in terms of the block diagrams which are used in control theory. An alternative approach to understanding the mechanisms of normal eye movements involves describing the eye movement behaviour in terms of smooth changes in state variables. The latter approach captures the burst cell firing against motor error (difference between target gaze angle and current gaze angle) phase plane behaviour which is found experimentally and facilitates the modelling of variations in burst cell behaviour. A novel explanation of several types of congenital nystagmus waveforms is given in terms of a saccadic termination abnormality.

Keywords

Block Diagram Phase Plane Cell Behaviour Plane Behaviour Movement Behaviour 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • David S. Broomhead
    • 1
  • Richard A. Clement
    • 2
  • Mark R. Muldoon
    • 1
  • Jonathan P. Whittle
    • 4
  • Columba Scallan
    • 3
  • Richard V. Abadi
    • 3
  1. 1. Department of Mathematics, UMIST, P.O. Box 88, Manchester M60 1QD, UKGB
  2. 2. Defense Evaluation and Research Agency, Fort Halstead, Sevenoaks, TN14 7BP, UKGB
  3. 3. Department of Optometry and Neuroscience, UMIST, P.O. Box 88, Manchester M60 1QD, UKGB
  4. 4. Department of Ophthalmology and Orthoptics, The University of Sheffield, Glossop Road, Sheffield S10 2JF, UKGB

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