The development of selective attention and inhibition in NICU graduates during the preschool years

Area of Science:

• Developmental Psychology
• Neuroscience
• Pediatrics

Background:

• Neonatal intensive care unit (NICU) graduates exhibit a higher prevalence of attention deficits, including attention deficit hyperactivity disorder (ADHD).
• Understanding the impact of early life risk factors on neurodevelopmental outcomes is crucial for timely interventions.

Purpose of the Study:

• To investigate the influence of specific risk factors on attention and inhibition in NICU graduates.
• To assess developmental trajectories of attention and inhibition from 42 to 60 months of corrected age.

Main Methods:

• Longitudinal study of 271 NICU graduates assessed at 42, 51, and 60 months.
• Evaluation of attention and inhibition using reaction time, continuous performance, and Go/No-Go tasks.
• Analysis of risk factors including birth weight (BW), central nervous system (CNS) injury, gender, and maternal education.

Main Results:

• Very low birth weight (<1,500 g) NICU graduates demonstrated poorer target/non-target discrimination compared to typical birth weight infants.
• Male participants responded faster but exhibited higher rates of false alarms and random responses, indicating impulsivity.
• Attention capacity diminished over task duration, and inhibitory control remained challenging even at 60 months.

Conclusions:

• Early risk factors, particularly very low birth weight, significantly impact sustained attention and inhibitory control in NICU graduates.
• Despite age-related improvements, persistent difficulties in attention and inhibition highlight the long-term neurodevelopmental challenges faced by this population.
• Findings underscore the need for continued monitoring and targeted interventions for NICU graduates to address ADHD and related attention problems.