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Evidence for shallow cognitive maps in schizophrenia.
Ata B Karagoz1, Erin K Moran1, Deanna M Barch1,2
1Department of Psychological & Brain Sciences, Washington University in St. Louis.
Biorxiv : the Preprint Server for Biology
|March 11, 2024
Summary
Schizophrenia (SZ) impairs cognitive map formation, leading to decision-making deficits. This study shows SZ affects how individuals represent task structures, focusing on simpler features over abstract ones.
Area of Science:
- Cognitive Neuroscience
- Psychiatry
Background:
- Schizophrenia (SZ) is associated with decision-making deficits.
- Theories debate whether SZ impacts cognitive control or motivation.
- An alternative hypothesis suggests impaired cognitive map formation in SZ.
Approach:
- Tested the hypothesis that SZ impairs cognitive map construction.
- Utilized a sequential decision-making task combined with representational similarity analysis.
- Examined how choice option relationships change during cognitive map building in SZ and control groups.
Key Points:
- Individuals with SZ showed altered task structure representation.
- SZ group focused on simpler visual features, neglecting abstract, planning-relevant ones.
- Performance was comparable between SZ and control groups, despite representational differences.
Conclusions:
- Schizophrenia negatively impacts cognitive map formation.
- Deficits in decision-making may stem from ill-formed cognitive maps, not just control or motivation.
- Distinguishing cognitive map formation from goal-directed control is crucial for understanding SZ cognitive deficits.
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