Modifications of recognition memory processes in preterm children: an event-related potential study.
Kerstin H Kipp1, Axel Mecklinger, Nicole Brunnemann
1University of Ulm.
Child Development
|December 19, 2014
Summary
Preterm birth may affect memory. While overall memory performance was similar, preterm children showed intact familiarity but reduced recollection, suggesting a compensatory mechanism for recognition memory.
Area of Science:
- Neuroscience
- Developmental Psychology
- Cognitive Science
Background:
- Prematurity can lead to hippocampal compromise, potentially impacting memory functions.
- Hippocampus-dependent memory (recollection) may be more vulnerable than hippocampus-independent memory (familiarity).
Purpose of the Study:
- To investigate recognition memory processes in children born preterm with reduced hippocampal volumes.
- To determine if preterm children exhibit differential impairments in familiarity-based versus recollection-based retrieval.
Main Methods:
- An item recognition task was administered to 18 preterm children (gestation < 34 weeks, weight < 1,600 g) and 15 controls (8-10 years).
- Event-related potentials (ERPs) were used to assess the neural correlates of familiarity and recollection.
- A follow-up experiment excluded general cognitive deficits as an explanation.
Main Results:
- No significant differences in overall memory performance were observed between groups.
- The event-related potential (ERP) correlate of familiarity was intact in the preterm group.
- The ERP correlate of recollection was attenuated in preterm children, correlating with gestational age.
Conclusions:
- Recognition memory in preterm children may involve a compensatory strategy where intact familiarity supports performance despite attenuated recollection.
- These findings highlight specific cognitive profiles associated with preterm birth, independent of neonatal complications.
- Gestational age is a significant factor influencing the neural basis of recollection in this population.
