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|Title: ||Brain response to a humanoid robot in areas implicated in the perception of human emotional gestures|
|Authors: ||Chaminade, Thierry|
Frith, Chris D.
Umilta, Maria Alessandra
|Issue Date: ||2010|
|Publisher: ||Public Library of Science (© the authors)|
|Citation: ||CHAMINADE, T. ... (et al.), 2010. Brain response to a humanoid robot in areas implicated in the perception of human emotional gestures. PLoS One, 5 (7), e11577.|
|Abstract: ||BACKGROUND: The humanoid robot WE4-RII was designed to express human emotions in order to improve human-robot
interaction. We can read the emotions depicted in its gestures, yet might utilize different neural processes than those used
for reading the emotions in human agents.
METHODOLOGY: Here, fMRI was used to assess how brain areas activated by the perception of human basic emotions (facial
expression of Anger, Joy, Disgust) and silent speech respond to a humanoid robot impersonating the same emotions, while
participants were instructed to attend either to the emotion or to the motion depicted.
PRINCIPAL FINDINGS: Increased responses to robot compared to human stimuli in the occipital and posterior temporal
cortices suggest additional visual processing when perceiving a mechanical anthropomorphic agent. In contrast, activity in
cortical areas endowed with mirror properties, like left Broca’s area for the perception of speech, and in the processing of
emotions like the left anterior insula for the perception of disgust and the orbitofrontal cortex for the perception of anger, is
reduced for robot stimuli, suggesting lesser resonance with the mechanical agent. Finally, instructions to explicitly attend to
the emotion significantly increased response to robot, but not human facial expressions in the anterior part of the left
inferior frontal gyrus, a neural marker of motor resonance.
CONCLUSIONS: Motor resonance towards a humanoid robot, but not a human, display of facial emotion is increased when
attention is directed towards judging emotions.
SIGNIFICANCE: Artificial agents can be used to assess how factors like anthropomorphism affect neural response to the
perception of human actions.|
|Description: ||Originally issued by PLoS under a CC BY Licence (see: http://creativecommons.org/licenses/by/4.0/).|
|Publisher Link: ||http://dx.doi.org/10.1371/journal.pone.0011577|
|Appears in Collections:||Published Articles (Mechanical, Electrical and Manufacturing Engineering)|
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