ONLINE LECTURE: Was Wernicke Right?
Thursday, March 2nd, 2pm EDT
“Was Wernicke Right?”
Argye Hillis, MD
Johns Hopkins University
Lesion-deficit association studies complement functional neuroimaging studies in identifying the neural basis for behaviors by revealing areas of brain essential for the task, rather than those that are merely engaged in a particular task. However, lesion studies sometimes appear to yield conflicting results about the necessity of a particular area for a given function. A case in point is the role of Wernicke’s area in auditory comprehension. I will review evidence for the role of Wernicke’s area in auditory word comprehension from previously published studies of patients with a variety of neurological diseases as well as evidence from functional neuroimaging. I will also present some new data from both acute and chronic stroke that bear on this topic. The preponderance of the data from these various sources converges in support of the hypothesis that Wernicke’s area (defined as left superior temporal gyrus and surrounding cortex in inferior parietal cortex and middle temporal gyus) is one module in the ventral stream critical for accessing word meaning from spoken words. I use these data to illustrate how the convergence of different sources of lesion data can provide strong evidence for the role of a particular area in a given function. Finally, I provide recent data indicating that one role of Wernicke’s area is to link spoken words to their meanings.
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C-STAR LECTURE SERIES
The Center for the Study of Aphasia Recovery (C-STAR; http://cstar.sc.edu) houses researchers who examine the effects of behavioral treatment, brain stimulation, and residual brain function (brain plasticity) on recovery from aphasia. C-STAR is a collaboration between researchers from the University of South Carolina, the Medical University of South Carolina, Johns Hopkins University, and the University of California, Irvine. The Center is funded through the National Institute of Deafness and Communication Disorders (NIDCD) grant #NIH P50 DC014664. Biweekly public lectures, given by members and guests of C-STAR, are accessible live and online. Recordings of the lectures can be viewed via C-STAR YouTube channel: https://www.youtube.com/channel/UC8p0CuG4He9nqCR4nnzhZ7w
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