A philosopher's reflections on the discovery of mirror neurons.

Mirror neurons fire both when a primate executes a transitive action directed toward a target (e.g., grasping) and when he observes the same action performed by another. According to the prevalent interpretation, action-mirroring is a process of interpersonal neural similarity whereby an observer maps the agent's perceived movements onto her own motor repertoire. Furthermore, ever since Gallese and Goldman's (1998) influential paper, action-mirroring has been linked to third-person mindreading on the grounds that it enables an observer to represent the agent's intention. In this paper, I criticize the prevalent interpretation on two grounds. First, action-mirroring could not result in interpersonal neural similarity unless there was a single mechanism active at different times in a single brain during the execution and the perception of acts of grasping. Second, such a neural mechanism is better conceived as underlying the possession of the concept of grasping than as a basis for mindreading.