Emotion recognition from stimuli in different sensory modalities in post-encephalitic patients
Yayoi Hayakawa1, Masaru Mimura2, Hidetomo Murakami3, Mitsuru Kawamura3
1Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan; 2Department of Neuropsychiatry, Showa University School of Medicine, Tokyo, Japan; 3Department of Neurology, Showa University School of Medicine, Tokyo, Japan
Abstract: Emotion recognition from facial and non-facial stimuli was investigated in two post-encephalitic patients a few months after the onset of the disease. One patient who had a lesion relatively restricted to the amygdala and hippocampus experienced difficulty in recognizing fear from facial expressions. In contrast, the other patient who had a lesion that extended beyond the amygdala experienced difficulty in recognizing fear from non-facial (prosodic and written verbal) stimuli. We showed that impairment of emotion recognition was evident within a short duration after encephalitis and that recognizing emotion from different sensory modalities relies partly on integration of different neural systems.
Keywords: limbic encephalitis, emotion recognition, facial and non-facial stimuli
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