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Objective assessment of exploratory behaviour in schizophrenia using wireless motion capture
Ishraq Siddiqui1, Gary Remington2, Paul J Fletcher3
1Schizophrenia Division and Campbell Family Research Institute, Centre for Addiction and Mental Health, 250 College St., Toronto, Ontario M5T 1R8, Canada; Institute of Medical Science, Faculty of Medicine, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario M5S 1A8, Canada.
Schizophrenia patients show reduced visual exploration in novel environments, impacting motivation and community functioning. Objective motion capture reveals specific deficits beyond traditional assessments.
Area of Science:
- Neuroscience
- Psychiatry
- Behavioral Science
Background:
- Motivation deficits (amotivation) are a core feature of schizophrenia, significantly affecting daily functioning.
- Objective assessment of amotivation's impact on exploratory behavior in schizophrenia is limited.
Purpose of the Study:
- To objectively evaluate exploratory behavior deficits in schizophrenia using wireless motion capture.
- To investigate the relationship between exploratory behavior, negative symptoms, apathy, and community functioning in schizophrenia.
Main Methods:
- Utilized the Novelty Exploration Task in an open-field setting with wireless motion capture.
- Assessed 21 schizophrenia outpatients and 20 healthy controls on locomotor activity and object exploration (visual, tactile).
- Correlated task performance with clinical assessments of symptoms, cognition, and functioning.
Main Results:
- Schizophrenia participants exhibited significantly reduced visual object exploration compared to controls.
- Locomotor activity and tactile exploration were similar between groups.
- Exploratory behaviors, particularly visual, correlated with negative symptoms, apathy, and community functioning.
Conclusions:
- The Novelty Exploration Task provides objective quantification of exploratory behavior in schizophrenia.
- Visual exploration deficits are specifically linked to motivation and functioning impairments in schizophrenia.
- Findings highlight the need for interventions targeting motivational and exploratory deficits in schizophrenia management.
