Scientists in the US have found a way to plant ideas in people's heads as they sleep to make them have bizarre, abstract dreams. In trials, the scientists were able to influence the dreams of most study participants to dream about a tree during hypnagogia. However, unlike REM, individuals can still hear audio during hypnagogia while they dream, which can influence the content of dreams. That's why the sound of music playing or people talking can often play a part in our dreams during the lightest sleep stages. Overall, 67 per cent of dream reports from sleeping participants mentioned dreams involving a tree.

Source: Daily Mail September 28, 2020 10:55 UTC