The team examined the brainwave patterns of 36 infants (17 in the first experiment and 19 in the second) using electroencephalography (EEG), which measures patterns of brain electrical activity via electrodes in a skull cap worn by the participants. They compared the infants' brain activity to that of the adult who was singing nursery rhymes to the infant.
In the first of two experiments, the infant watched a video of an adult as she sang nursery rhymes. First, the adult, whose brainwave patterns had already been recorded, was looking directly at the infant. Then, she turned her head to avert her gaze, while still singing nursery rhymes. Finally, she turned her head away, but her eyes looked directly back at the infant.
As anticipated, the researchers found that infants' brainwaves were more synchronised to the adults' when the adult's gaze met the infant's, as compared to when her gaze was averted Interestingly, the greatest synchronising effect occurred when the adults' head was turned away but her eyes still looked directly at the infant. The researchers say this may be because such a gaze appears highly deliberate, and so provides a stronger signal to the infant that the adult intends to communicate with her.
In the second experiment, a real adult replaced the video. She only looked either directly at the infant or averted her gaze while singing nursery rhymes. This time, however, her brainwaves could be monitored live to see whether her brainwave patterns were being influenced by the infant's as well as the other way round.
This time, both infants and adults became more synchronised to each other's brain activity when mutual eye contact was established. This occurred even though the adult could see the infant at all times, and infants were equally interested in looking at the adult even when she looked away. The researchers say that this shows that brainwave synchronisation isn't just due to seeing a face or finding something interesting, but about sharing an intention to communicate.
The psychology of Perception involves the interaction of our senses and our conscious mind. Perception is involved in every aspect of our lives as we make decisions and judgments based on what we experience. If you study diligently you will leave this course with a broad understanding of sensation and perception. From this general understanding you will be able to further investigate areas of interest by means of literature review and research on specific topics.