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Updated: Jun 22, 2026
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Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection
Published on: March 10, 2021
Consecutive versus return motor perseveration during line cancellation task in hemispatial neglect
Eun-Joo Kim1, Byung Hwa Lee, Key Chung Park
1Department of Neurology, Pusan National University School of Medicine and Medical Research Institute, Busan, Korea.
Summary
Two forms of motor perseveration (MP) in neglect patients, consecutive MP (CMP) and return MP (RMP), show distinct responses to visual stimuli, suggesting different underlying neurological mechanisms.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Clinical Neurology
Background:
- Patients with neglect exhibit motor perseveration (MP), characterized by repetitive cancellation of targets.
- Two types of MP exist: consecutive MP (CMP) and return MP (RMP), differing in target re-engagement patterns.
Purpose of the Study:
- To investigate whether the two forms of motor perseveration (CMP and RMP) are neurologically dissociable.
- To explore the distinct mechanisms underlying CMP and RMP in patients with neglect.
Main Methods:
- Studied three patients with varying presentations of CMP and RMP (primarily CMP, primarily RMP, mixed).
- Assessed cancellation task performance with and without background visual movement (leftward and rightward).
Main Results:
- Leftward background movement reduced neglect and RMP severity in a patient with primarily RMP.
- Rightward background movement exacerbated neglect and RMP severity in the same patient.
- Patients with CMP (primarily or mixed) did not show a consistent correspondence between neglect severity and perseveration, unlike the RMP patient.
Conclusions:
- Distinct responses of CMP and RMP to visual stimuli suggest different underlying mechanisms.
- RMP may be linked to aberrant approach behaviors in neglect, while CMP might relate to a disengagement deficit.
