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Visual attention in preschool children prenatally exposed to cocaine: implications for behavioral regulation
Amy K Heffelfinger1, Suzanne Craft, Desirée A White
1Department of Neurology, Medical College of Wisconsin, Milwaukee, USA.
Insights
Prenatal cocaine exposure impairs visual attention and behavioral regulation in young children. Cocaine-exposed children showed slower reaction times in attention tasks and difficulties with self-control.
Area of Science:
- Neuroscience
- Developmental Psychology
- Pediatrics
Background:
- Prenatal cocaine exposure can disrupt neural development, potentially affecting visual attention.
- Early childhood visual attention is crucial for cognitive and behavioral development.
Purpose of the Study:
- To investigate visual attention and behavioral regulation in preschool children with prenatal cocaine exposure.
- To determine if prenatal cocaine exposure is associated with specific deficits in disengaging attention and sustained attention.
Main Methods:
- Assessed visual attention, cognition, and behavior in 14 cocaine-exposed and 20 control children (14-60 months).
- Utilized attention tasks measuring reaction times for disengagement and sustained attention.
- Included behavioral regulation assessments.
Main Results:
- Cocaine-exposed children exhibited slower reaction times in the latter half of the attention task, indicating impaired disengagement and sustained attention.
- A trend for slower reaction times was observed for targets in the right visual field.
- Cocaine-exposed children demonstrated significant difficulties in behavioral regulation.
Conclusions:
- Prenatal cocaine exposure is linked to specific impairments in visual attention, particularly in disengagement and sustained attention.
- Children with prenatal cocaine exposure may also experience challenges with behavioral regulation.
- Findings highlight the long-term neurodevelopmental consequences of prenatal substance exposure.
Abstract:
The presence of cocaine during the prenatal period disrupts the development of neural systems involved in mediating visual attention; therefore, it is possible that prenatal cocaine exposure results in impairments in visual attention in early childhood. In the current study we hypothesized that preschool children with prenatal cocaine exposure would exhibit difficulties in the disengagement operation of visual attention and in sustaining attention, particularly for targets presented in the right visual field. Fourteen cocaine-exposed children and 20 control children between 14 and 60 months of age were assessed on measures of visual attention, cognition, and behavior. Cocaine-exposed children had slower reaction times on disengagement trials in the second half of our attention task, supporting our hypotheses that impairments in disengagement and sustained attention are associated with prenatal cocaine exposure. There was a trend for slower reaction times to targets presented in the right visual field, but not to targets presented in the left visual field. Cocaine-exposed children also exhibited greater difficulties in behavioral regulation. Overall, our findings suggest that children with prenatal cocaine exposure demonstrate specific impairments in visual attention and behavioral regulation.