Language dominance determined by magnetic source imaging: a comparison with the Wada procedure.

Abstract:

OBJECTIVE:To evaluate the validity of data derived from magnetic source imaging (MSI) regarding cerebral dominance for language in patients with intractable seizure disorder. METHOD:The authors performed functional imaging of the receptive language cortex using a whole-head neuromagnetometer in 26 consecutive epilepsy patients who also underwent the intracarotid amobarbital (Wada) procedure. During MSI recordings, patients engaged in a word recognition task. This task was shown previously to activate language areas in normal adults as well as in patients who undergo intraoperative language mapping, allowing confirmation of MSI findings. Language laterality indices were formed for both the Wada and the MSI procedures. In addition, clinical judgments regarding cerebral dominance for language were made using the two methods by independent raters. RESULTS:Cluster analysis indicated excellent agreement between the quantitative MSI and Wada indices. Rater judgments showed almost complete agreement as well. CONCLUSION:MSI is a promising method for determining cerebral dominance for language.

journal_name

Neurology

journal_title

Neurology

authors

Breier JI,Simos PG,Zouridakis G,Wheless JW,Willmore LJ,Constantinou JE,Maggio WW,Papanicolaou AC

doi

10.1212/wnl.53.5.938

subject

Has Abstract

pub_date

1999-09-22 00:00:00

pages

938-45

issue

5

eissn

0028-3878

issn

1526-632X

journal_volume

53

pub_type

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