Instruct: Identify the main category of Biorxiv papers based on the titles and abstracts
Query: Tickle contagion in the somatosensory cortex The cellular mechanisms of emotional contagion are unknown. We investigated tickle contagion and the underlying neuronal representations in rats. We recorded trunk somatosensory cortex activity of observer rats while they received tickling, audio-visual playback of tickling footage, and while they witnessed tickling of demonstrator rats. Observers vocalized, and showed "Freudensprunge" ("joy jumps") during witnessing live tickling, while they showed little behavioral responses to playbacks. A fraction of trunk somatosensory neurons responded to both direct and witnessed tickling in action-specific manner. The correlation between direct and witnessed tickling responses increased towards deeper cortical layers. Tickle-mirror neurons but not non-mirror neurons discharged prior to and during vocalizations and hence might drive contagious  laughter. We conclude that trunk somatosensory cortex represents mirrored ticklishness.
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The categories of this paper are: evolutionary
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The categories of this paper are: immunology
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The categories of this paper are: paleontology
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The categories of this paper are: molecular
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The categories of this paper are: ecology
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The categories of this paper are: biochemistry
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The categories of this paper are: systems
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The categories of this paper are: scientific
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The categories of this paper are: physiology
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The categories of this paper are: pathology
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The categories of this paper are: cell
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The categories of this paper are: plant
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The categories of this paper are: toxicology
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The categories of this paper are: cancer
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The categories of this paper are: bioinformatics
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The categories of this paper are: zoology