On beyond mirror neurons: internal representations subserving imitation and recognition of skilled object-related actions in humans

Brain Res Cogn Brain Res. 2005 Sep;25(1):226-39. doi: 10.1016/j.cogbrainres.2005.05.014.

Abstract

A considerable recent literature argues that the same representations, encoded by inferior prefrontal and parietal cells known as "mirror neurons", may be activated in both production and recognition of object-related actions. Here, we test several predictions derived from the contemporary literature on the parity between production and recognition and the putative emergence of the mirror neuron system from a system coding hand-object interactions. Forty-four patients with left-hemisphere stroke, 21 of whom exhibited ideomotor apraxia, performed a number of pantomime imitation and recognition tasks, and performance was scored with respect to hand posture, arm posture, amplitude, and timing. Consistent with predictions, there were strong relationships between object-related pantomime imitation and object-related pantomime recognition, and between imitation and recognition of the hand posture component of object-related actions. Skilled object-related gesture representations are likely to be closely tied to evolutionarily more primitive systems controlling object grasping, to emerge from a mapping between object and action information coded by ventral and dorsal streams, and to be lateralized to the left hemisphere in humans.

Publication types

  • Comparative Study
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Aged
  • Analysis of Variance
  • Apraxia, Ideomotor / etiology
  • Apraxia, Ideomotor / pathology
  • Apraxia, Ideomotor / physiopathology*
  • Case-Control Studies
  • Choice Behavior / physiology
  • Disability Evaluation
  • Female
  • Functional Laterality / physiology*
  • Gestures
  • Humans
  • Imitative Behavior / physiology*
  • Magnetic Resonance Imaging / methods
  • Male
  • Middle Aged
  • Psychomotor Performance / physiology*
  • Recognition, Psychology / physiology*
  • Space Perception / physiology
  • Stroke / complications*
  • Stroke / pathology
  • Stroke / physiopathology