Meditation is one of the most widespread psychological methods for specifically inducing certain altered states of consciousness – such as increased mindfulness, deep contemplation and mystical experiences. This can significantly change the sense of self, feelings and perception of time and the outside world. There are a variety of meditation techniques in which attention is focused on different objects (images, words, body regions, breathing sensations, etc.) or on all sensations, feelings and thoughts that arise spontaneously in the field of consciousness. Basic research and clinical studies have demonstrated many positive effects of meditation, for example on stress reduction, the ability to concentrate or the development of prosocial feelings. In recent years, imaging techniques have been increasingly used to demonstrate systematic changes in the activity and structure of the brain. A project at IGPP is also investigating the potential negative effects of meditation. For example, extraordinary or profound spiritual experiences can also lead to insecurity. Those affected can contact the counseling service for support with spiritual and meditation-induced crises.