Abstract (eng)
Infants are born into an environment, which consists of a large variety of multimodal stimuli. Temporal synchrony between these stimuli can help infants perceive and react to their surroundings more easily. Studies show that infants can perceive synchrony between audio- visual stimuli under certain conditions as early as four weeks after birth. However, to be able to do so, these early stimuli have to be very simple. According to current findings the infant’s ability to perceive temporal synchrony seems to develop at the end of the first year of life, if the stimuli are more complex, such as music and movement. The questions arise, however, whether infants can perceive audio-visual synchrony in the presence of simple and socially meaningful musical and movement stimuli, and whether, as can be surmised from literature, individual prior experience influences the infant’s ability. This was investigated via an online study using the preferential looking paradigm. The viewing behaviour of four to six months old infants (n = 35) was examined using webcam-based eye-tracking and video recordings. Additionally, there was a questionnaire for the guardian which was used to determine the infant’s previous experiences with music. According to the one-sample t-test, there was no significant difference between the infant’s viewing behaviour and a random viewing behaviour. The Spearman correlation showed no significant relation between the infant’s viewing behaviour and their previous experiences with music. The results of this study indicate that infants in their first six months of their life are unable to perceive audio-visual synchrony in music and movement, even if the stimuli are simple and socially meaningful, and that their perception is not influenced by individual previous experiences with music.