Evidence For Common Coding
In the past decade, a growing number of results have been interpreted in favor of the common coding theory.
For instance, one functional MRI study demonstrated that the brain’s response to the 2/3 power law of motion (i.e., which dictates a strong coupling between movement curvature and velocity) is much stronger and more widespread than to other types of motion. Compliance with this law was reflected in the activation of a large network of brain areas subserving motor production, visual motion processing, and action observation functions. These results support the common coding and the notion of similar neural coding for motion perception and production.
One of the most direct evidence for common coding in the brain now stems from the fact that pattern classifiers that can differentiate based on brain activity whether someone has performed action A or B can also classify, above chance, whether that person heard the sound of action A or B, thereby demonstrating that action execution and perception are represented using a common code
Recently, the common coding theory received increased interest from researchers in developmental psychology, cognitive neuroscience, robotics, and social psychology.
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