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Infant visual attention and step responsiveness to optic flow during treadmill stepping
Victoria A Moerchen1, Mina E Saeed
1Physical Therapy Program, Department of Kinesiology, College of Health Sciences, University of Wisconsin-Milwaukee, PO Box 413, Milwaukee, WI 53201, United States. moerchev@uwm.edu
Infant Behavior & Development
|September 18, 2012
Summary
Infants showed increased stepping frequency and complexity on a treadmill when exposed to visual motion. This suggests that visual-motor coupling enhances infant stepping, with potential benefits for clinical populations.
Area of Science:
- Developmental Psychology
- Motor Control
- Infant Motor Development
Background:
- Infant stepping is a complex motor behavior.
- Understanding the sensory influences on infant motor development is crucial.
- Pre-locomotor infants exhibit rudimentary stepping reflexes.
Purpose of the Study:
- To investigate the effect of optic flow on infant treadmill stepping.
- To examine the relationship between visual attention and motor responses in infants.
- To explore the concept of visuomotor coupling in pre-locomotor infants.
Main Methods:
- Two groups of pre-locomotor infants (2-5 months and 7-10 months) participated.
- Infants were exposed to terrestrial optic flow via a patterned treadmill belt.
- Visual attention and step responsiveness were recorded and analyzed using digital video.
Main Results:
- Infants demonstrated longer visual attention to the patterned belt.
- Increased step frequencies were observed during periods of visual attention.
- Visuomotor coupling was enhanced, leading to increased stepping frequency and complexity.
Conclusions:
- Optic flow and visuotactile calibration on a treadmill enhance infant stepping.
- Sensorimotor experiences are vital for improving infant treadmill stepping.
- Findings may inform interventions for clinical populations with motor deficits.
