Development of attention in preterm infants

Area of Science:

• Neuroscience
• Developmental Psychology
• Neonatology

Background:

• Assessing cognitive and sensory processing in preterm infants is crucial for understanding early brain development.
• The development of attention and visual fixation abilities in premature infants is not fully understood.
• Early sensory experiences can significantly impact long-term neurological outcomes.

Purpose of the Study:

• To evaluate the quality of awake states and attention in preterm infants.
• To investigate the progression of visual attention behaviors in relation to conceptual age.
• To determine the earliest point at which preterm infants may process sensory stimulation.

Main Methods:

• Studied 26 preterm infants (28-32 weeks gestation at birth).
• Assessed indices of attention (eye widening, fixation, brightening, scanning, cessation of sucking) during visual fixation tasks.
• Rated attention behaviors on a scale of 4, from 1 to 4 weeks postnatally until 36 weeks' conceptual age.

Main Results:

• A progressive increase in visual attention behaviors was observed from 32 to 36 weeks' conceptual age.
• Mean attention scores increased from 0.7 at 31 weeks to 1.8 at 34 weeks, and 2.7 at 36 weeks' gestation.
• Infants demonstrated enhanced ability to fixate on visual stimuli as they approached term.

Conclusions:

• Preterm infants exhibit developing visual attention capabilities within the first few weeks after birth.
• The human brain appears capable of entering waking states and processing sensory information as early as 31-32 weeks from conception.
• These findings suggest a foundation for early sensory-based interventions in preterm neonates.