ABSTRACT
This chapter discusses the evidence that there is a lengthy period of learning for the lateralized motor functions of the left hemisphere. It highlights predictions made that the left sensory association cortex is involved in tasks requiring motor modelling, and that the premotor regions are involved in some aspects of language perception. The chapter deals with the evidence in normal persons, pertaining to motor control of the hands and eyes. In addition there is a subsection on evidence obtained using the delayed auditory feedback as an indicator of motor lateralization in the vocal apparatus and other effectors. The alternative form of motor control involves continual visual guidance, and for this a left hand advantage might be predicted. To decide between the hypotheses analysis of the right hand superiority in reaching and aiming tasks is needed. The existence of manual babbling in deaf infants is one indication of the process of acquisition of better time-structured models.
