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It takes two to pantomime: Communication meets motor cognition
Lisa Finkel1, Katharina Hogrefe2, Scott H Frey3
1Department of Psychology, University of Konstanz, Germany; Lurija Institute for Rehabilitation Science and Health Research, Kliniken Schmieder, Allensbach, Germany.
Neuroimage. Clinical
|July 14, 2018
Summary
Limb apraxia diagnosis using tool use pantomime is clarified by differentiating error types. Left brain damage in anterior regions links to communicative errors, while posterior damage links to motor errors.
Area of Science:
- Neuroscience
- Cognitive Neurology
Background:
- Limb apraxia, a motor cognition disorder from left brain damage, is traditionally diagnosed via tool use pantomime.
- Previous research inconsistently links anterior vs. posterior network damage to pantomime deficits.
Purpose of the Study:
- To investigate the differential neural correlates of specific pantomime error types in limb apraxia.
- To refine the understanding of the left fronto-temporo-parietal network's role in tool use pantomime.
Main Methods:
- Voxel-based lesion analysis on MRI/CT data from 67 left-brain damaged stroke patients.
- Evaluation of pantomime errors, specifically pathological use of body parts as objects (BPO) and grip/movement errors.
Main Results:
- Damage in the inferior frontal cortex/temporal pole correlates with increased BPO errors (communicative aspect).
- Damage in the inferior parietal lobe correlates with increased movement/grip errors (motor-cognitive aspect).
Conclusions:
- The left fronto-temporo-parietal network has distinct anterior and posterior regions contributing to tool use pantomime.
- Differentiating error types is crucial for accurately mapping neural correlates of limb apraxia.
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