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Related Experiment Videos

[Saccadic automatism in babies during rapid sleep].

V A Filin, T F Filina

    Zhurnal Vysshei Nervnoi Deiatelnosti Imeni I P Pavlova
    |July 1, 1989
    PubMed
    Summary

    Infant and adult saccades share similar characteristics during sleep and wakefulness, suggesting an automated saccadic system forms early in development.

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    Area of Science:

    • Neuroscience
    • Developmental Biology
    • Ophthalmology

    Background:

    • Rapid eye movements, known as saccades, are crucial for visual processing.
    • Understanding saccade development in infants provides insights into early visual system maturation.

    Purpose of the Study:

    • To compare saccade characteristics in infants and adults during sleep and wakefulness.
    • To investigate the developmental trajectory of saccadic activity automation.

    Main Methods:

    • Electrooculography (EOG) was used to record saccades in six infants (1-8 months) during paradoxical sleep.
    • Saccade data from infants were compared with existing data from adults during sleep and alertness.

    Main Results:

    • Distribution curves for intersaccadic intervals and saccade amplitudes showed coincidence between infants and adults.
    • Comparable values (71.5-90.5%) for frequent saccadic intervals (up to 1s) were observed in both infants and adults, across sleep and wakefulness.
    • These findings suggest a foundational, automated saccadic system present from early infancy.

    Conclusions:

    • Saccadic activity appears to be automated early in development, forming a basis for oculomotor control.
    • This automated saccadic system is present in both infants and adults during sleep and wakefulness.
    • Automation of saccades is established during early human development (ontogenesis).

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