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Enhancing social ability by stimulating right temporoparietal junction
Idalmis Santiesteban1, Michael J Banissy, Caroline Catmur
1Department of Psychological Sciences, Birkbeck, University of London, Malet Street, London WC1E 7HX, UK.
Current Biology : CB
|November 6, 2012
Summary
Transcranial direct current stimulation (tDCS) of the temporoparietal junction (TPJ) enhanced self-other representation control in social cognition tasks. This suggests tDCS may aid clinical populations with social processing deficits.
Area of Science:
- Neuroscience
- Social Cognitive Neuroscience
Background:
- The temporoparietal junction (TPJ) is a critical hub in the brain's social network.
- TPJ is implicated in diverse sociocognitive functions, including self-other representation, empathy, and mentalizing.
Purpose of the Study:
- To investigate if transcranial direct current stimulation (tDCS) can modulate sociocognitive abilities dependent on online self-other representation control.
- To determine the specific effects of anodal (excitatory) and cathodal (inhibitory) tDCS on TPJ in social cognition tasks.
Main Methods:
- Participants underwent anodal, cathodal, or sham tDCS over the TPJ.
- Sociocognitive performance was assessed using imitation, visual perspective-taking, and self-referential tasks.
Main Results:
- Anodal tDCS significantly improved online control of self-other representations during imitation and perspective-taking tasks.
- No significant effects of tDCS were observed on mental state attribution in a task without explicit self-other comparison.
- Cathodal or sham stimulation did not yield similar improvements.
Conclusions:
- tDCS of the TPJ can effectively enhance specific aspects of social cognition, particularly the online control of self-other representations.
- These findings support the potential therapeutic application of tDCS for individuals with social processing impairments.
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