Skip to main content

Intracarotid Sodium Amobarbital Test

  • Reference work entry
  • 29 Accesses

Synonyms

Wada test

Definition

Intracarotid sodium amobarbital test also known wada test (named after Dr. Juhn Wada, who developed it,) combines neuroimaging and neuropsychological testing methods to establish which cerebral functions are localized to which hemisphere, specifically language.

During the test, one side of the brain is put to sleep (anesthetized) by injecting a barbiturate into the internal carotid artery via a cannula or intra-arterial catheter from the femoral artery. The drug is injected into one hemisphere at a time. For example, when the drug is injected into the left carotid artery, the left side of the brain is anesthetized for several minutes. Because the left side of the brain controls movement on the right side of the body, the right side of the body will not be able to move for 5–15 min. Therefore, if the anesthetized side is the side that controls speech, the patient will not be able to speak until the effect of the drug clears.

To test the patient’s speech,...

This is a preview of subscription content, access via your institution.

Buying options

Chapter
USD   29.95
Price excludes VAT (USA)
  • DOI: 10.1007/978-0-387-79948-3_41
  • Chapter length: 2 pages
  • Instant PDF download
  • Readable on all devices
  • Own it forever
  • Exclusive offer for individuals only
  • Tax calculation will be finalised during checkout
eBook
USD   1,350.00
Price excludes VAT (USA)
  • ISBN: 978-0-387-79948-3
  • Instant PDF download
  • Readable on all devices
  • Own it forever
  • Exclusive offer for individuals only
  • Tax calculation will be finalised during checkout
Hardcover Book
USD   1,499.99
Price excludes VAT (USA)

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and Permissions

Copyright information

© 2011 Springer Science+Business Media, LLC

About this entry

Cite this entry

Grafton, L., Hammond, F. (2011). Intracarotid Sodium Amobarbital Test. In: Kreutzer, J.S., DeLuca, J., Caplan, B. (eds) Encyclopedia of Clinical Neuropsychology. Springer, New York, NY. https://doi.org/10.1007/978-0-387-79948-3_41

Download citation