How Your Brain Works
03/11/2013 14:39
by Craig Freudenrich, Ph.D. and Robynne Boyd
The simplest possible creatures have incredibly basic nervous systems made up of nothing but reflex pathways. For example, flatworms and invertebrates don't have centralized brains. They have loose associations of neurons arranged in straightforward reflex pathways. Flatworms have neural nets, or individual neurons linked together that form a net around the entire animal. [Read more] ...