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. Author manuscript; available in PMC: 2012 Mar 1.
Published in final edited form as: Am J Phys Anthropol. 2010 Dec 10;144(3):454–462. doi: 10.1002/ajpa.21426

Fig. 1.

Fig. 1

Shown here is a bedsharing mother-infant pair undergoing electro-physiological monitoring of brain wave activity (EEGs and EOGs) to identify transient arousals, awakenings, and sleep stage progression. For each member of this mother-infant dyad nasal air flow, chest movements, heart rate, and oxygen saturation, in addition to breastfeeding behaviors, were continuously recorded and filmed through infrared cameras. Photo taken by Max Aguilera-Hellweg.