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How to Obtain Reliable Visual Event-related Potentials in Newborns
Published on: October 24, 2019
Improved Visual Perception in Very Low Birth Weight Infants on Enhanced Nutrient Supply
Elin W Blakstad1, Kenneth Strømmen, Sissel J Moltu
1Department of Pediatric and Adolescent Medicine, Akershus University Hospital and Institute for Clinical Medicine, Campus Ahus, University of Oslo, Lørenskog, Norway.
Insights
Enhanced nutrition in premature infants improved visual perception of global motion. This study suggests optimal nutrient supply is crucial for neurodevelopment in very low birth weight (VLBW) infants.
Area of Science:
- Neonatal nutrition
- Developmental neuroscience
- Visual perception
Background:
- Optimal nutrient supply is critical for growth and neurodevelopment in very low birth weight (VLBW) infants.
- VLBW infants often experience growth restriction, potentially impacting neurocognitive outcomes.
- Visual perception is a key aspect of neurodevelopment in infants.
Purpose of the Study:
- To compare enhanced versus routine nutrient supply in VLBW infants.
- To evaluate the impact of enhanced nutrition on visual perception of global form and motion.
- To utilize visual event-related potentials (VERP) for objective measurement of visual processing.
Main Methods:
- Fifty VLBW infants were randomized into two groups: enhanced nutrition or standard nutritional care.
- The enhanced nutrition group received increased energy, protein, fat, essential fatty acids, and vitamin A.
- Visual event-related potentials (VERP) were assessed at 5 months corrected age to analyze responses to global form and motion stimuli.
Main Results:
- Analysis included data from 31 VLBW infants.
- Infants receiving enhanced nutrition showed stronger motion VERP responses (f1 and f3 components) near the posterior midline compared to controls.
- Statistical significance was observed for both f1 (p = 0.02) and f3 (p = 0.001) components.
Conclusions:
- Enhanced nutrition led to more consistent responses to global motion in VLBW infants.
- The study suggests that improved nutrient supply may enhance the visual perception of global motion.
- These findings highlight the potential benefits of tailored nutritional interventions for VLBW infant neurodevelopment.
Background:
Optimal nutrient supply to very low birth weight (VLBW: BW <1,500 g) infants is important for growth and neurodevelopment. Growth restriction is common among these infants and may be associated with neurocognitive impairments.
Objectives:
To compare an enhanced nutrient supply to a routine supply given to VLBW infants and to evaluate the effects on visual perception of global form and motion measured by visual event-related potentials (VERP).
Methods:
A total of 50 VLBW infants were randomized to an intervention group that received an increased supply of energy, protein, fat, essential fatty acids, and vitamin A or a control group that received standard nutritional care. At 5 months' corrected age the infants were examined using VERP to investigate the responses to global form and motion. VERP were analysed at the first (f1) and third (f3) harmonics of the stimulus frequency.
Results:
Data from 31 subjects were eligible for analysis. The motion VERP responses for the f1 and f3 components were stronger in the area near the posterior midline region in the intervention group compared to the controls in the group analyses (p = 0.02 and p = 0.001, respectively).
Conclusion:
The results showed a more consistent response to global motion among infants receiving enhanced nutrition. The intervention may have improved visual perception of global motion.
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