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Grant number: 09/09064-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): October 01, 2009
Effective date (End): December 31, 2011
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal researcher:Oswaldo Baffa Filho
Grantee:Victor Hugo de Oliveira e Souza
Home Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil


Due to advances in research in neuroscience, the interest in non-invasive techniques for interaction with the brain has been increased. In this context, transcranial magnetic stimulation (TMS) is becoming increasingly important. TMS is based on the emission of magnetic pulses in order to cause depolarization in the cerebral cortex eliciting the spreading of electrical signals in the brain. Another important technique used in neuroscience is magnetic resonance imaging (MRI), which allow the localization of brain structures. MRI used concomitantly with computer graphics tools allows the knowledge of the distribution of the magnetic field produced by the coil of stimulation in the region of interest, through co-registration of maps of the TMS magnetic fields and MRI images. In order to stimulate specific areas, a considerable focalization of the electric field is required and butterfly coils are used, considered to be better than the circular coils. It's essential to know the distribution of the vector magnetic field produced by the coil, to evaluate the contributions of its three components, which depending on its magnitude can stimulate unwanted areas of the cortical region and influence the results obtained. This work could improve the accuracy of TMS.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SOUZA, VICTOR HUGO; MATSUDA, RENAN H.; PERES, ANDRE S. C.; AMORIM, PAULO HENRIQUE J.; MORAES, THIAGO F.; SILVA, JORGE VICENTE L.; BAFFA, OSWALDO. Development and characterization of the InVesalius Navigator software for navigated transcranial magnetic stimulation. JOURNAL OF NEUROSCIENCE METHODS, v. 309, p. 109-120, NOV 1 2018. Web of Science Citations: 3.

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Filed patent(s) as a result of this research project

SISTEMA PARA NAVEGAÇÃO VIRTUAL E CO—REGISTRO DE CORPOS RÍGIDOS E SEUS MODELOS VIRTUAIS E MÉTODO PARA A DETERMINAÇÃO DAS COORDENADAS COMUNS AOS COMPONENTES DO SISTEMA BR1020130256510 - Universidade de São Paulo (USP) ; Universidade Federal do Rio Grande do Norte (UFRN) . Oswaldo Baffa Filho; Draulio Barros de Araujo; Andre Salles Cunha Peres; Victor Hugo de Oliveira Souza; Jorge Vicente Lopes da Silva; Paulo Henrique Junqueira Amori; Thiago Franco de Moraes; Tatiana Alchueyr P. Martins; Eduardo de Matos Rodrigues - October 2013, 04