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. Author manuscript; available in PMC: 2022 May 1.
Published in final edited form as: Early Hum Dev. 2021 Mar 26;156:105365. doi: 10.1016/j.earlhumdev.2021.105365

Figure 2.

Figure 2.

Sound attenuation of DREAMIES device. White bars with solid SD = DREAMIES device; Shaded bars with dotted SD = adapted from animal model [23]). Note, sound filtering of the DREAMIES is similar to that of the sheep gravid uterus (commonly used animal model of maternal-fetal interactions, adapted from Gerhardt [23]). DREAMIES preferentially block high-frequency sounds (e.g., bedside monitor alarms [22]) and allows transmission of some low-frequency sounds (e.g., human voice [38]) as observed in womb during gestation.[23,24].