Motor equivalence and the uncontrolled manifold

We discuss the notion of motor equivalence in the context of speech production and argue, that a rigorous grounding of the notion needs to make use of the concept of the uncontrolled manifold. We provide a brief tutorial of the principle of the uncontrolled manifold and link it to speech articulatory movement using a simple toy example. We sketch the neuronal dynamics from which the uncontrolled manifold emerges and discuss implications for understanding flexible, context-dependent speech articulatory dynamics.

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