Development of smooth pursuit tracking in young infants
نویسندگان
چکیده
Eye and head movements were measured in a group of infants at 2, 3, and 5 months of age as they were attentively tracking an object moving at 0.2 or 0.4 Hz in sinus or triangular mode. Smooth pursuit gain increased with age, especially until 3 months. At 2-3 months, the lag of the smooth pursuit was small for the sinusoidal motion but large for the triangular one. At 5 months, smooth pursuit was leading the sinusoidal motion and the lag for the triangular one was small. Head tracking increased substantially with age and its lag was always large.
منابع مشابه
Operant conditioning of the visual smooth pursuit in young infants.
Smooth pursuit is a complex behaviour which is not considered as totally functional at birth. The lack of maturation of the visuo-motor systems is generally invoked to explain this phenomenon. However, if this oculomotor response is an operant behaviour, an alternate explanation may be found in the absence of previous confrontation with the environmental contingencies. A first group of young in...
متن کاملThe role of eye movements in depth from motion parallax during infancy.
Motion parallax is a motion-based, monocular depth cue that uses an object's relative motion and velocity as a cue to relative depth. In adults, and in monkeys, a smooth pursuit eye movement signal is used to disambiguate the depth-sign provided by these relative motion cues. The current study investigates infants' perception of depth from motion parallax and the development of two oculomotor f...
متن کاملVisual motor development in full term and preterm infants
Grönqvist, H. 2010. Visual motor development in full term and preterm infants. Acta Universitatis Upsaliensis. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Social Sciences 62. 70 pp. Uppsala. ISBN 978-91-554-7892-6. Smooth tracking and efficient reaching for moving objects require the ability to predict the velocity and trajectory of the object. This skill is imp...
متن کاملSmooth pursuit in infants: maturation and the influence of stimulation.
PURPOSE To investigate the development of smooth pursuit in infants and to assess the influence of different stimulus characteristics. METHODS A total of 131 eye movement recordings were obtained from 71 infants between 1 and 18 months of age using infrared photo-oculography. Smooth pursuit eye movements (SPEM) were stimulated using targets of different sizes (1.2° and 4.7° of visual angle) a...
متن کاملDevelopment of smooth pursuit eye movements in very preterm infants: 1. General aspects
AIM To investigate early oculo-motor development in a population-based cohort of very preterm infants. METHODS Early oculo-motor development was prospectively studied by measuring smooth pursuit eye movements at 2 and 4 months corrected age in a population of very preterm infants born in Uppsala County 2004-2007. Eighty-one preterm infants were studied, and 32 healthy term infants constituted...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Vision Research
دوره 37 شماره
صفحات -
تاریخ انتشار 1997