Study of the activation of encephalic regions in fMRI images

• Ricardo Morello Santos FEI
• Paulo Sérgio Silva Rodrigues FEI

DOI: https://doi.org/10.5753/sbcas.2019.6298

Abstract

Nowadays, 93 % of subcortical regions are unknown to neuroscien- tists and, therefore, are classified as terra incognita. Despite the recent advan- ces in medical imaging technologies, the quality of images collected in vivo is still low when compared to the histological images. On the other hand, the area of non-extensive statistics has advanced and presented good results, mainly in image processing. This work proposes the use of the sigmoid fitler with non- extensive entropy in functional magnetic resonance imaging (fMRI), with the purpose of highlighting and mapping brain regions activated during the execu- tion of specific tasks.

References

Forstmann, B., Ratcliff, R., and Wagenmakers, E.-J. (2016). Sequential sampling models in cognitive neuroscience: Advantages, applications, and extensions. Annual Review of Psychology, 67(1):641–666. PMID: 26393872.

Gallao, C. and Rodrigues, P. (2015). A q-Gaussian Spatial Filtering. In Proceeding of XI Workshop de Visao Computacional, Uberlandia, MG, Brazil, pages 230–235.

Jenkinson, M., Beckmann, C. F., Behrens, T. E., Woolrich, M. W., and Smith, S. M. (2012). Fsl. NeuroImage, 62(2):782 – 790. 20 YEARS OF fMRI.

Massa, P., Wachs-Lopes, G., Ribeiro, M., and Rodrigues, P. (2016). Realce de Regioes de Cancer Mamário Baseado em Fun??es q-Sigmoides. In Proceeding of The 29th SIBGRAPI, Sao Jose dos Campos, SP, Brazil.

Minai, A. A. (2015). Computational Models of Cognitive and Motor Control, pages 665– 682. Springer Berlin Heidelberg, Berlin, Heidelberg.

Norden, A. D. and Blumenfeld, H. (2002). The role of subcortical structures in human epilepsy. Epilepsy Behavior, 3:219–231.

Pun, T. (1981). Entropic Thresholding: A New Approach. COMPUTER GRAPHICS AND IMAGE PROCESSING, 16(3):210–239.

Rodrigues, P. and Giraldi, G. (2015). Improving a firefly meta-heuristic for multilevel image segmentation using Tsallis entropy. Patterns Analysis and Applications, pages 1–20.

Rodrigues, P. S. and Giraldi, G. A. (2011). Improving the non-extensive medical image segmentation based on tsallis entropy. Pattern Analysis and Applications, 14(4):369–379.

Shannon, C. and Weaver, W. (1948). The Mathematical Theory of Communication. University of Illinois Press, Urbana.

Tsallis, C. (1988). Possible generalization of boltzmann-gibbs statistics. Journal of Statistical Physics, 52:479–487. 10.1007/BF01016429.

Wager, T. D., Davidson, M. L., Hughes, B. L., Lindquist, M. A., and Ochsner, K. N. (2008). Prefrontal-subcortical pathways mediating successful emotion regulation. Neuron, 59:1037–1050.

Zuo, N., Yang, Z., Liu, Y., Li, J., and Jiang, T. (2018). Both activated and less-activated regions identified by functional mri reconfigure to support task executions. In Brain and behavior.