Event-related Potentials During Target-response Tasks to Study Cognitive Processes of Upper Limb Use in Children with
Ingar Marie Zielinski1, Bert Steenbergen2, C Marjolein Baas3
1Behavioural Science Institute, Radboud University Nijmegen; i.zielinski@pwo.ru.nl.
Insights
This study investigates cognitive processes in children with unilateral Cerebral Palsy (CP) and Developmental Disregard (DD). Event-related potentials reveal insights into the cognitive underpinnings of DD, aiding therapeutic strategies.
Area of Science:
- Neuroscience
- Developmental Pediatrics
- Cognitive Psychology
Background:
- Unilateral Cerebral Palsy (CP) is a common childhood neurodevelopmental disorder causing unilateral motor impairments, often affecting the upper limb.
- Developmental Disregard (DD) in unilateral CP involves a reduced awareness of the affected limb's preserved movement capacity.
- Existing theories for DD offer therapeutic guidelines, but cognitive contributions remain understudied.
Purpose of the Study:
- To investigate cognitive processes associated with upper limb control in children with unilateral CP, comparing those with and without Developmental Disregard (DD).
- To explore the role of cognitive aspects in the phenomenon of DD using event-related potentials (ERPs).
Main Methods:
- Utilized a protocol involving electroencephalography (EEG) to record event-related potentials (ERPs) during hand-movement response tasks.
- Analyzed ERP components (N1, N2, P3) to assess cognitive processes like attention, cognitive control, and mental effort.
- Compared ERP data between children with unilateral CP with and without DD.
Main Results:
- The study protocol successfully recorded ERPs during target-response tasks, enabling the examination of covert cognitive processes.
- ERP analysis provides insights into cognitive functions potentially underlying Developmental Disregard (DD) in unilateral Cerebral Palsy (CP).
Conclusions:
- This research introduces a novel approach to understanding DD by examining underlying cognitive processes.
- The findings offer a new explanatory level beyond behavioral studies, potentially improving therapeutic interventions for children with unilateral CP and DD.
- This protocol facilitates broader research into the cognitive aspects of developmental movement restrictions.
Abstract:
Unilateral Cerebral Palsy (CP) is a neurodevelopmental disorder that is a very common cause of disability in childhood. It is characterized by unilateral motor impairments that are frequently dominated in the upper limb. In addition to a reduced movement capacity of the affected upper limb, several children with unilateral CP show a reduced awareness of the remaining movement capacity of that limb. This phenomenon of disregarding the preserved capacity of the affected upper limb is regularly referred to as Developmental Disregard (DD). Different theories have been postulated to explain DD, each suggesting slightly different guidelines for therapy. Still, cognitive processes that might additionally contribute to DD in children with unilateral CP have never been directly studied. The current protocol was developed to study cognitive aspects involved in upper limb control in children with unilateral CP with and without DD. This was done by recording event-related potentials (ERPs) extracted from the ongoing EEG during target-response tasks asking for a hand-movement response. ERPs consist of several components, each of them associated with a well-defined cognitive process (e.g., the N1 with early attention processes, the N2 with cognitive control and the P3 with cognitive load and mental effort). Due to its excellent temporal resolution, the ERP technique enables to study several covert cognitive processes preceding overt motor responses and thus allows insight into the cognitive processes that might contribute to the phenomenon of DD. Using this protocol adds a new level of explanation to existing behavioral studies and opens new avenues to the broader implementation of research on cognitive aspects of developmental movement restrictions in children.
