Fear response. Computer artwork of how the human brain reacts to a frightening stimulus, in this case the sighting of a snake. Signals travel from the eyes to the thalamus, a relay station between the senses and the cortex. The thalamus passes the signal to two different areas of the brain, the amygdala (purple) and the occipital lobe (blue). The amygdala is a primitive area of the brain that recognises danger and reacts quickly to ready the body for fight or flight. The occipital lobe processes visual information and passes the information on to the hippocampus, which is involved in memory and learning and produces a more considered response.

Photo website with Rights Managed and Royalty Free stock photos, images, illustrations and footage available for download immediately for commercial and editorial uses. Aflo is a leading independent supplier and producer of stock pictures and visual content. Search and find high quality images and video for design, print, web-use and publishing. Buy photos from our extensive collection of model released and property released sports images. Search some of the most beautiful travel and landscape pictures from our own photographers and license from our large collection of content, modern and archive, focusing on Japan. We provide free research. Register for personal account management and for full use of our Stock Photography website and start to download images now.