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Neurocognitive mechanisms underlying action tool knowledge tasks: specificity of tool-tool compared to hand-tool
Mathieu Lesourd1,2,3, François Osiurak4,5, Julie Martin6,7
1Université Marie et Louis Pasteur, INSERM, UMR 1322 LINC, F-25000, Besançon, France. mathieu.lesourd@univ-fcomte.fr.
Communications Biology
|April 3, 2025
Summary
Action tool knowledge involves distinct brain processes. Tool-tool compatibility relies on motor imagery, while hand-tool tasks engage visual imagery and additional brain regions.
Area of Science:
- Cognitive Neuroscience
- Neuropsychology
Background:
- Action tool knowledge is assessed via tool-tool and hand-tool compatibility tasks.
- Previous research noted dissociations between these tasks in brain-damaged patients.
Purpose of the Study:
- Investigate neuropsychological dissociations in action tool knowledge tasks.
- Explore cognitive mechanisms underlying tool-tool versus hand-tool compatibility.
- Analyze neural bases of these tasks using fMRI data.
Main Methods:
- Experiment 1: Assessed neuropsychological dissociations in 60 brain-damaged patients.
- Experiment 2: Examined cognitive mechanisms in 52 healthy participants.
- Experiment 3: Reanalyzed fMRI data from 34 healthy participants.
Main Results:
- Both tasks share left-lateralized brain network computations.
- Hand-tool compatibility engages additional brain regions beyond this network.
- Tool-tool tasks are linked to motor imagery, hand-tool tasks to visual imagery.
Conclusions:
- Action tool knowledge tasks recruit distinct cognitive and neural mechanisms.
- Visual and motor imagery play differential roles in hand-tool and tool-tool compatibility.
- Findings offer new insights into the neural basis of action tool knowledge.
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