{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T17:20:37Z","timestamp":1781889637344,"version":"3.54.5"},"reference-count":68,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,9]]},"abstract":"<jats:p>The sodium amytal test, or Wada test, named after Juhn Wada, has remained a pillar of presurgical planning and is used to identify the laterality of the dominant language and memory areas in the brain. What is perhaps less well known is that the original intent of the test was to abort seizure activity from an affected hemisphere and also to protect that hemisphere from the effects of electroconvulsive treatment. Some 80 years after Paul Broca described the frontal operculum as an essential area of expressive language and well before the age of MRI, Wada used the test to determine language dominance. The test was later adopted to study hemispheric memory dominance but was met with less consistent success because of the vascular anatomy of the mesial temporal structures. With the advent of functional MRI, the use of the Wada test has narrowed to application in select patients. The concept of selectively inhibiting part of the brain to determine its function, however, remains crucial to understanding brain function. In this review, the authors discuss the rise and fall of the Wada test, an important historical example of the innovation of clinicians in neuroscience.<\/jats:p>","DOI":"10.3171\/2019.6.focus19346","type":"journal-article","created":{"date-parts":[[2019,9,6]],"date-time":"2019-09-06T19:16:10Z","timestamp":1567797370000},"page":"E5","source":"Crossref","is-referenced-by-count":18,"title":["Mapping language dominance through the lens of the Wada test"],"prefix":"10.3171","volume":"47","author":[{"given":"Bornali","family":"Kundu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John D.","family":"Rolston","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ramesh","family":"Grandhi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1","series-title":"Neurochirurgie","first-page":"152","article-title":"[Unexpected mental modifications after subtotal temporal lobectomy.]","volume":"2","author":"Baldwin M","year":"1956","unstructured":"Baldwin M: [Unexpected mental modifications after subtotal temporal lobectomy.] Neurochirurgie 2:152\u2013167, 1956 (French)13348449"},{"key":"b2","series-title":"Epilepsia","doi-asserted-by":"publisher","first-page":"715","DOI":"10.1111\/j.1528-1167.2007.01515_1.x","article-title":"The role of the Wada test in the surgical treatment of temporal lobe epilepsy: an international survey","volume":"49","author":"Baxendale S","year":"2008","unstructured":"Baxendale S, Thompson PJ, Duncan JS: The role of the Wada test in the surgical treatment of temporal lobe epilepsy: an international survey. 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