1.  27
    A Speech-Motor-System Perspective on Nervous-System-Control Variables.James H. Abbs - 1982 - Behavioral and Brain Sciences 5 (4):541-542.
  2.  40
    Motor Cortex Fields and Speech Movements: Simple Dual Control is Implausible.James H. Abbs & Roxanne DePaul - 1998 - Behavioral and Brain Sciences 21 (4):511-512.
    We applaud the spirit of MacNeilage's attempts to better explain the evolution and cortical control of speech by drawing on the vast literature in nonhuman primate neurobiology. However, he oversimplifies motor cortical fields and their known individual functions to such an extent that he undermines the value of his effort. In particular, MacNeilage has lumped together the functional characteristics across multiple mesial and lateral motor cortex fields, inadvertantly creating two hypothetical centers that simply may not exist.
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    Muscle Partitioning Via Multiple Inputs: An Alternative Hypothesis.James H. Abbs & Benoni B. Edin - 1989 - Behavioral and Brain Sciences 12 (4):645-646.