A class of visuomotor neurons (initially identified in macaque monkey premotor cortex) that respond when a particular action is performed by an individual observed and when the same action, performed by another individual, is observed. Mirror neurons appear to form a cortical system matching observation and execution of goal-related motor actions.
Gallese, V., & Goldman, A. (1998). Mirror neurons and the simulation theory of mind-reading. Trends in Cognitive Sciences, 2(12), 493-501. doi: 10.1016/S1364-6613(98)01262-5.