This work was supported by Grants NIH/NIDCD RO1-01510, F32DC008052, and NSF BCS-544846 and by the Hugh Knowles Center, Northwestern University. The authors acknowledge the anonymous reviewers for their useful comments. We also thank Trent Nicol, Erika Skoe, and Karen Banai for providing feedback on earlier versions of this article.
The scalp-recorded brainstem response to speech: Neural origins and plasticity
Article first published online: 12 OCT 2009
Copyright © 2009 Society for Psychophysiological Research
Volume 47, Issue 2, pages 236–246, March 2010
How to Cite
Chandrasekaran, B. and Kraus, N. (2010), The scalp-recorded brainstem response to speech: Neural origins and plasticity. Psychophysiology, 47: 236–246. doi: 10.1111/j.1469-8986.2009.00928.x
- Issue published online: 8 FEB 2010
- Article first published online: 12 OCT 2009
- (Received December 8, 2008; Accepted March 25, 2009)
Considerable progress has been made in our understanding of the remarkable fidelity with which the human auditory brainstem represents key acoustic features of the speech signal. The brainstem response to speech can be assessed noninvasively by examining scalp-recorded evoked potentials. Morphologically, two main components of the scalp-recorded brainstem response can be differentiated, a transient onset response and a sustained frequency-following response (FFR). Together, these two components are capable of conveying important segmental and suprasegmental information inherent in the typical speech syllable. Here we examine the putative neural sources of the scalp-recorded brainstem response and review recent evidence that demonstrates that the brainstem response to speech is dynamic in nature and malleable by experience. Finally, we propose a putative mechanism for experience-dependent plasticity at the level of the brainstem.