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- December 14, 1990
-
- MIND7.ASC
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- This file is a short description of a presentation given at the
- 1990 American ElectroEncephalographic Society Annual Meeting
- We wish to thank "Sgt." Paul Carlson for providing this to KeelyNet.
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- Study of the Frontal Speech Area with
- TransCranial Magnetic Stimulation (TMS)
- Department of Neurology, Univ. of Minnesota
- and MINCEP, Minneapolis, MN 55455
- research done by
- Alvaro Pascual-Leone, Anil Dhuna and John R. Gates
-
- TransCranial magnetic stimulation (TMS) at 8 to 25 Hertz was
- performed on 4 subjects over the frontal area.
-
- Over each side stimulation was performed with the 11 CM diameter
- coil held flat on the scalp and the outer edge consecutively held
- over the 16 positions of a 4 X 4 grid with 1.5 CM distance between
- grid points. The anterior-inferior corner of the grid was electrode
- position F7.
-
- All subjects were being evaluated for surgical treatment of
- medically intractable epilepsy. Intracarotid amytal test
- demonstrated left hemisphere speed dominance in all.
-
- TMS induced speech arrest in all patients when applied to a SINGLE
- GRID POSITION over the LEFT HEMISPHERE.
-
- In all subjects, this position WAS DIFFERENT and anterior to those
- that induced laryngeal or contralateral face and hand movements.
-
- This study demonstrates that TMS is capable of IDENTIFYING a frontal
- area different from the motor cortex, which when stimulated INDUCES
- SPEECH ARREST.
-
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- If you have comments or other information relating to such topics
- as this paper covers, please upload to KeelyNet or send to the
- Vangard Sciences address as listed on the first page.
- Thank you for your consideration, interest and support.
-
- Jerry W. Decker.........Ron Barker...........Chuck Henderson
- Vangard Sciences/KeelyNet
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