Any of a group of neurons that become active both when an animal moves in a certain way and when the animal observes others performing the same action. Learning by simulation or imitation is thought to be a function of the system of mirror neurons in the brain. See also: neuron. 1  Facebook.
5. Lectins. Lectins are found in high quantities in beans and wheat, which as mentioned earlier reduce nutrient absorption and can cause indigestion, bloating and gas for many people.
Lecithin is used in many foods as an emulsifying agent (emulsifiers help keep the fat from separating). The richest natural sources of lecithin are from foods which are also high in fat, such as eggs and beef liver, but other foods such as peanuts, beef steak and some fruits and vegetables are lesser sources.