# COLOUR PERCEPTION Mind and the physical world Edited **Opening (not a real abstract):** in this book are correct. Readers must therefore always check the product information and clinical procedures with the most up to date published product information and data sheets provided by the manufacturers and the most recent codes of conduct and safety regulations. The authors and the publishers do not accept responsibility or legal liability for any errors in the text or for the misuse or misapplication of material in this work. **Authors:** [[RAINER MAUSFELD]]