FOETAL MUSIC PERCEPTION: A COMPARISON STUDY BETWEEN HEART RATE AND MOTOR RESPONSES ASSESSED BY APIB SCALE IN ULTRASOUND EXAMS.
Music perception on foetuses has been described in habituation, categorical perception, sound preferences and recall tests. This study investigated the temporal dimension of rhythm in foetuses of 41 pregnant women evaluating heart rate (HR) and motor response (movement and organization dimensions according to the Assessment of Preterm Infants Behaviour scale) during ultrasound exams. Folkloric lullaby was presented in three ways: from an external source at a slow; then fast pace; and sung by own woman at a slow pace. HR varied significantly between stages and decreased to baseline in response to maternal song. â€œOrganizationâ€ was sensitive to the change between the first and last two stages indicating perception of sound source. â€œMovementâ€ was sensitive when changed between the first and second stage. We conclude that foetuses showed behavioural and physiological response to different sound source and musical rhythm increasing and decreasing organization response and HR according to the pace.