Provine, R. R. (2005). Yawning. American Scientist, 93(6), 532-539. doi:10.1511/2005.56.532 https://doi.org/10.1511/2005.56.532
Provine, American Scientist 93(6), 2005, 532-539. Video study: 55 per cent of 30 adults yawned during a five-minute series of 30 yawns against 21 per cent of 30 watching smiles. Masked-mouth faces worked as well as intact faces. Reading about yawning: 30 per cent versus 11 per cent for hiccuping. Spontaneous yawning begins in the womb around the twelfth week; contagious yawning appears years after birth. Suggests a link to empathy and treats mirror neurons as an unlikely mechanism, citing imaging work on regions linked to self-processing.
Provine, American Scientist 93(6), 2005, 532-539. Video study: 55 per cent of 30 adults yawned during a five-minute series of 30 yawns against 21 per cent of 30 watching smiles. Masked-mouth faces worked as well as intact faces. Reading about yawning: 30 per cent versus 11 per cent for hiccuping. Spontaneous yawning begins in the womb around the twelfth week; contagious yawning appears years after birth. Suggests a link to empathy and treats mirror neurons as an unlikely mechanism, citing imaging work on regions linked to self-processing.
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Provine, R. R. (2005). Yawning. American Scientist, 93(6), 532-539. doi:10.1511/2005.56.532 https://doi.org/10.1511/2005.56.532