This issue of Perspectives on Speech Science and Orofacial Disorders focuses on the neural bases of speech and voice, by providing an article summarizing the Zemlin lecture presented at the ASHA Annual Convention in November 2010. In addition, the second article in this issue reviews research outcomes of speaking rate effects on normal articulation.

Learning Outcomes
You will be able to:

• describe the key neural structures involved in speech production and vocalization
• differentiate between the neural substrates involved in speech production and those involved in other human and non-human vocal behaviors
• identify how traditional rehabilitation methods may be combined with newer techniques that modulate neural structures in order to enhance outcomes
• identify the effects of speaking rate on a range of articulatory kinematic and acoustic measures
• outline some of the experimental design issues related to the study of speaking rate

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