B6: Brain and Mind Notes for the OCR GCSE Biology module: B6 – Brain and Mind. These have been made according to the specification and cover all the relevant topics for examination in May/June. OCR GCSE B6 Notes: B6.1 How do animals respond to changes in their environment B6.2 How is information passed through the nervous system? B6.3 Can reflex responses be learned? B6.4 How do humans develop more complex behavior?