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Gaze behaviour during interception in children with spastic unilateral cerebral palsy
P M van Kampen1, A Ledebt, A R P Smorenburg
1Institute for Biomedical Research into Human Movement and Health, Manchester Metropolitan University, Manchester M1 5 GD, UK. p.vankampen@hagaziekenhuis.nl
Insights
Children with Spastic Unilateral Cerebral Palsy (SUCP) use anticipatory gaze behavior during interception tasks. Gaze patterns differed between right and left hemisphere lesions but did not impact accuracy.
Area of Science:
- Neuroscience
- Developmental Psychology
- Biomechanics
Background:
- Spastic Unilateral Cerebral Palsy (SUCP) affects motor control and coordination.
- Understanding gaze behavior in SUCP is crucial for developing targeted interventions.
- Interceptive movements require precise visual-motor coordination.
Purpose of the Study:
- To investigate anticipatory gaze behavior in children with SUCP during interceptive movements.
- To examine the relationship between gaze patterns and interception accuracy.
- To explore differences in gaze behavior based on the side of the intracerebral lesion (right vs. left hemisphere).
Main Methods:
- Participants: Five children with right hemisphere lesions (RHL) and five with left hemisphere lesions (LHL).
- Task: Walking towards and intercepting a perpendicularly moving ball under no-occlusion and occlusion conditions.
- Measurements: Interception accuracy and gaze patterns were recorded.
Main Results:
- A significant relationship was found between gaze behavior and successful interception.
- Evidence suggests the presence of anticipatory gaze behavior in children with SUCP.
- Differences in gaze behavior were observed between RHL and LHL groups, potentially related to planning, but did not affect accuracy.
Conclusions:
- Gaze behavior during interceptive tasks in children with SUCP is anticipatory.
- The observed gaze patterns are at least partly dependent on the side of the brain lesion.
- While lesion side influences gaze strategy, it does not appear to compromise interception performance accuracy.
Abstract:
Anticipatory gaze behaviour during interceptive movements was investigated in children with Spastic Unilateral Cerebral Palsy (SUCP), and related to the side of the intracerebral lesion. Five children with lesions of the right hemisphere (RHL) and five children with lesions of the left hemisphere (LHL) had to walk towards and intercept a ball that moved perpendicular to the walking path. Interception accuracy and gaze patterns were measured in a no-occlusion and occlusion condition, in which the ball was occluded from view for half of its trajectory. There was a clear support for a relationship between gaze behaviour and success in interception performance, with some evidence for the presence of anticipatory gaze behaviour. There were also differences in gaze behaviour between children with RHL and children with LHL that might be related to planning, but these did not affect interception accuracy. It is concluded that gaze behaviour during interceptive movements is anticipatory, and at least partly dependent on the lesional side.
