Imitation, mirror neurons and autism

Area of Science:

• Neuroscience
• Developmental Psychology
• Cognitive Science

Background:

• Autism spectrum disorder (ASD) is characterized by cognitive deficits, but these offer incomplete explanations.
• Imitative disturbances, including difficulties in action copying and stereotyped mimicking (e.g., echolalia), are prominent in ASD.
• Mirror neurons (MNs), found in frontal cortex, activate for both self-performed and observed actions, potentially bridging self-other representations.

Purpose of the Study:

• To investigate the role of mirror neuron (MN) systems in the imitative disturbances associated with autism.
• To propose a neurodevelopmental model for autism centered on MN system dysfunction.

Main Methods:

• The study proposes a theoretical framework linking MN function to imitation and social cognition.
• It reviews existing literature on MNs, imitation, and autism.

Main Results:

• Mirror neuron systems provide a potential neural basis for understanding imitative deficits in autism.
• The evolution of sophisticated cortical systems utilizing MNs is crucial for social cognitive functions.
• Early developmental failures in MN systems may trigger a cascade of impairments leading to the autism syndrome.

Conclusions:

• Dysfunction within mirror neuron systems is hypothesized as a key factor in the development of autism.
• This perspective offers a novel explanation for the imitative and social challenges observed in individuals with autism.
• Understanding MN system development is critical for addressing the neurodevelopmental underpinnings of autism.