London – Experts from two US colleges have found the individual neuronal activity responsible for observational learning, a study published Tuesday in "Nature Communications" revealed. Researchers from the University of California - Los Angeles (UCLA) and the California Technical Insitute (Caltech) studied the activity of individual neurons with the aim of discovering the system through which the human brain learns from observing other individuals. According to research group leader Michael Hill, the study has managed to "transcend different levels of neuroscience," including the abstract level of computational models _ reflected in the activity of individual neurons _ and human behavior and interaction. The researchers studied brain activity by implanting chronic depth electrodes in ten patients suffering from epilepsy, who were then instructed to play a card game. During the game, information registered by the electrodes reflected changes in neuronal behavior caused by the process of learning through the observation of other players.