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The Maturation of Eye Movement in the Cat

  • Leopoldo Bon
  • Cristina Lucchetti
Part of the Advances in Behavioral Biology book series (ABBI, volume 28)

Abstract

The aim of this report was to verify whether maturation can influence eye movement in the alert kitten. The experiments were carried out on 5 adult cats and on 5 kittens aged 35–50 days. The maturation of visuomotor behaviour (Van Hof 1976) and of the vestibular-ocular reflex (Flandrin et al. 1979) is incomplete at this age. Animals were operated under general anaesthesia one week before the experiment to allow painless fixation of the head. The experiments were executed in a darkened cage. To define the behavioural state EEG and EMG were recorded. Horizontal and vertical components of eye movement were recorded by a modified Robinson’s search coil using the magnetic field technique. Briefly, the coil was inserted in a suction contact lens that was placed on the ocular globe on the day of the experiment. We have found that in awake kittens the spatio-temporal pattern develops in a prevailing vertical plane; on the contrary, in the cat it is developed in a horizontal plane. The vertical orientation reminded us of what we had found in REM’s episodes in kittens as well as in cats (Bon et al. 1983). Generally, a rapid eye movement is followed by a fixation. In the present experiment we have computed the percentage of movements followed by fixation. In the kitten, the percentage was low (26.7%), in the cat, it was higher (68.7%).

Keywords

Present Experiment General Anaesthesia Motor Activity Horizontal Plane Vertical Component 
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.

References

  1. Bon, L., Benassi, C., and Morigi, M., 1983, Rapid eye movements in the kitten, Electroenceph. clin. Neurophysiol, 55:601.CrossRefGoogle Scholar
  2. Flandrin, J.M., Courjon, J.K., and Jeannerod, M., 1979, Development of vestibulo-ocular response in the kitten, Neurosci. Letters, 12:295.CrossRefGoogle Scholar
  3. Van Hof-Van Duin, J., 1976, Development of visuomotor behaviour in normal and dark-reared cats, Brain Res., 104:233.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Leopoldo Bon
    • 1
  • Cristina Lucchetti
    • 1
  1. 1.Istituto di FisiologiaUniversità di TriesteTriesteItaly

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