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Pre-SMA activation and the perception of contagiousness and authenticity in laughter sounds
Addison D N Billing1, Robert J Cooper2, Sophie K Scott3
1Institute of Cognitive Neuroscience, University College London, UK; DOT-HUB, Biomedical Optics Research Laboratory, University College London, UK.
Abstract:
Functional near-infrared spectroscopy and behavioural methods were used to examine the neural basis of the behavioural contagion and authenticity of laughter. We demonstrate that the processing of laughter sounds recruits networks previously shown to be related to empathy and auditory-motor mirror networks. Additionally, we found that the differences in the levels of activation in response to volitional and spontaneous laughter could predict an individual's perception of how contagious they found the laughter to be.
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