Preterm birth affects dorsal-stream functioning even after age 6

Area of Science:

• Neuroscience
• Developmental Psychology
• Pediatrics

Background:

• Increasing survival rates of preterm infants highlight the need to understand long-term health outcomes.
• Preterm birth is associated with potential risks for cognitive and developmental challenges.
• Understanding the impact on specific neural pathways is crucial for early intervention.

Purpose of the Study:

• To investigate the long-term effects of preterm birth on dorsal- and ventral-stream functioning.
• To compare cognitive performance in preterm and full-term children.
• To determine if gestational age influences specific visual-spatial processing pathways.

Main Methods:

• Comparison of cognitive task performance between preterm and full-term born children.
• Assessment of dorsal-stream functioning through tasks like drawing.
• Assessment of ventral-stream functioning through visual processing tasks.
• Longitudinal follow-up of children over 6 years post-birth.

Main Results:

• Preterm children exhibited an atypical pattern of performance compared to full-term controls.
• This performance difference was specifically observed in the dorsal-drawing task.
• No significant differences were noted in ventral-stream functioning tasks.
• The effects on dorsal-stream functioning persisted despite favorable environmental conditions.

Conclusions:

• The number of gestational weeks at birth significantly impacts the development of dorsal-stream functioning.
• Dorsal-stream visual-spatial processing may be a vulnerable area for preterm infants.
• These effects are observable even in healthy preterm children after several years of supportive environments.