Spatial neglect treatment: The brain's spatial-motor Aiming systems

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Cognitive Psychology

Background:

• Spatial neglect is often linked to a spatial-motor "Aiming" bias, a frontal-subcortical syndrome.
• Current spatial neglect treatment studies infrequently evaluate aiming errors, creating knowledge gaps in understanding functional disability and treatment efficacy.
• Discrepant treatment effects in spatial neglect studies may stem from variations in patient samples regarding aiming bias.

Purpose of the Study:

• To review behavioral evidence for aiming spatial neglect.
• To highlight the importance of assessing and targeting aiming bias in spatial neglect rehabilitation.
• To explore the neuroanatomical underpinnings of aiming spatial neglect.

Main Methods:

• Literature review of behavioral evidence for aiming spatial neglect.
• Review of studies on aiming spatial neglect and prism adaptation treatment.
• Presentation of preliminary data on bromocriptine treatment for aiming spatial neglect.
• Review of neuroanatomical and network disruptions associated with aiming spatial neglect.

Main Results:

• Aiming spatial neglect is a core deficit in spatial neglect, impacting motor-exploratory functions.
• Aiming spatial neglect predicts response to prism adaptation treatment.
• Frontal brain lesions are associated with aiming spatial neglect and response to certain interventions.
• Preliminary data suggests bromocriptine may be a potential treatment avenue.

Conclusions:

• Assessing aiming spatial neglect is crucial for accurately capturing functional disability in rehabilitation research.
• Targeting aiming bias can personalize spatial neglect rehabilitation and potentially improve mobility after stroke.
• Future research should co-stratify patients by lesion location and aiming spatial neglect to optimize interventions.