How vision makes sure that little fish do not get carried away!

In this article,  human brain is a very unique nerve, but for many years we had no idea how the brain processed such large scale movements in the visual environment know as "optic flow" so that when running or jogging we can perceive and estimate are speed correctly and not stumble. One animal that uses this characteristic or capability is fish and their swimming techniques especially in rivers with the strong water flow. To prevent the fish from drifting in the water flow, the fish has to use this capability. Finally researchers as well as scientists discovered the way that are movements are compensated. In the department Max Planck Institute of Neurology, he searched for and described the neural networks in the brains in zebrafish larvae that control certain types of movement. The brain of a 5 mm fish contains several hundred thousand neurons.  One advantage of a fish is that the brain of a fish larvae is completely transparent. 

Neurons can be observed directly under the microscope without requiring any surgical discretion. During the experiment the neurons were all encoded with a dye and for each type of movement the fish produced allowed the the neuron that was being used to make the action to light up allowing for scientists to understand the full knowledge to what neurons are used in different movements.


http://www.theguardian.com/science/blog/2012/feb/28/how-many-neurons-human-brainhttp://www.theguardian.com/science/blog/2012/feb/28/how-many-neurons-human-bhttps://images