Spatial span in very prematurely born adolescents

Area of Science:

• Neuroscience
• Developmental Psychology
• Pediatrics

Background:

• Preterm birth is associated with potential long-term neurodevelopmental challenges.
• Understanding the specific cognitive outcomes in adolescence is crucial for targeted interventions.

Purpose of the Study:

• To assess working memory and processing speed in adolescents born very preterm compared to full-term controls.
• To identify any specific cognitive deficits related to very preterm birth at age 16.

Main Methods:

• A cohort of 35 adolescents born very preterm (gestational age <= 32 weeks) and 31 full-term controls were evaluated at 16 years of age.
• Cognitive functions including verbal IQ, processing speed, and various working memory tasks (e.g., complex spatial span) were assessed.
• Statistical analyses controlled for verbal IQ and processing speed to isolate effects on spatial working memory.

Main Results:

• No significant differences were found in verbal IQ or most working memory tasks between the groups.
• Adolescents born preterm demonstrated a statistically significant deficit in complex spatial span performance.
• Gestational age was identified as the primary predictor of spatial span performance, even after controlling for other cognitive factors.

Conclusions:

• Very preterm birth, even without major disabilities, is associated with a subtle spatial working memory deficit in adolescence.
• These findings suggest generally minor neuropsychological consequences of very preterm birth, offering encouraging long-term outlooks.
• Further research into specific spatial cognitive functions in preterm populations is warranted.