古巴在神经科学研究方面的活跃程度早有耳闻。这次来的Pedro A. Valdes-Sosa教授，就是古巴神经科学研究方面很有代表性的一位学者。他是古巴神经科学中心的Scientific Vice-director，正是上次来学校交流的古巴学者Martinez-Montes, Eduardo的老板。

明天他将在生命论坛开讲，欢迎关注
主讲人：Pedro A. Valdes-Sosa，Cuban Neuroscience Center (CNC), Cuba.
题目：Effective connectivity: Influence, causality and biophysical modeling of brain activity
时间：11月19日（周五）上午10:00
地点：主楼中252生命学院会议室
Abstract:
This is the final paper in a Comments and Controversies series dedicated to "The identification of interacting networks in the brain using fMRI: Model selection, causality and deconvolution". We argue that discovering effective connectivity depends critically on state-space models with biophysically informed observation and state equations. These models have to be endowed with priors on unknown parameters and afford checks for model Identifiability. We consider the similarities and differences among Dynamic Causal Modeling, Granger Causal Modeling and other approaches. We establish links between past and current statistical causal modeling, in terms of Bayesian dependency graphs and Wiener-Akaike-Granger-Schweder influence measures. We show that some of the challenges faced in this field have promising solutions and speculate on future developments.
Prof. Dr. Pedro A. Valdes-Sosa, PhD MD; Alard Roebroeck, Ph.D.; Jean Daunizeau, Ph.D.; Karl Friston PhD MD

以下是他最近的一些代表性文章
Valdes-Sosa P and Obrador-Fragoso A.Stratified 2009 Active Screening: Where Neurotechnology Meets Public Health. Medicc Review;11 (1)
Valdes-Sosa, P. A., Vega-Hernandez, M., Sanchez-Bornot, J. M., Martinez-Montes, E., and Bobes, M. A 2009.EEG source imaging with spatio-temporal tomographic nonnegative independent component analysis. Hum.Brain Mapp.;30 (6)1898-1910.
Martinez-Montes, E. and Valdes-Sosa, P. 2009 Exploring changes in phase of EEG oscillations with tests on complex valued time-frequency representations.NeuroImage; 47 (Supplement 1)S281-S283.
Pedro A. Valdes-Sosa, Jose Miguel Sanchez-Bornot, Roberto Carlos Sotero, Yasser Iturria-Medina, Yasser Aleman-Gomez, Jorge Bosch-Bayard, Felix Carbonell, Tohru Ozaki Model driven EEG/fMRI fusion of brain oscillations. Human Brain Mapping, 30: 2701- 2721
Eduardo Martínez-Montes, Elena R. Cuspineda-Bravo, Wael El-Deredy, José M. Sánchez-Bornot, Agustín Lage-Castellanos, Pedro A.Valdés-Sosa, (2008). Exploring event-related brain dynamics with tests on complex valued time-frequency representations. Statistics in Medicine, 27:2922–2947. DOI: 10.1002/sim.3132
Gruber T, Trujillo-Barreto NJ, Giabbiconi CM, Valdes-Sosa PA, Muller MM,(2006). Brain electrical tomography (BET) analysis of induced gamma band responses during a simple object recognition task. NeuroImage 29: 888-900.
Muller MM, Andersen S, Trujillo NJ, Valdes-Sosa P, Malinowski P, Hillyard SA, (2006). Feature-selective attention enhances color signals in early visual areas of the human brain. Proc. Natl. Acad. Sci. U. S A 103: 14250-14254.
Valdes-Sosa P.A., Kotter R., and Friston K.J. (2005) Introduction: multimodal neuroimaging of brain connectivity. Philos. Trans. R Soc. Lond B Biol. Sci. 360, 865-867.
Valdes-Sosa P.A., Sanchez-Bornot J.M., Lage-Castellanos A., Vega-Hernandez M., Bosch-Bayard J., Melie-Garcia L., and Canales-Rodriguez E. (2005) Estimating brain functional connectivity with sparse multivariate autoregression. Philos. Trans. R Soc. Lond B Biol. Sci. 360, 969-981.
Trujillo-Barreto, N.J. Aubert-Vázquez, E. Valdés-Sosa P.A.. (2004) Bayesian Model Averaging in EEG/MEG imaging. Neuroimage. 21, 1300-1319
Koenig, T., PRICHEP, L., Lehmann, D., Valdés-Sosa, P., Braeker, E., Kleinlogel, H. et al. (2002). Millisecond by millisecond, year by year: normative EEG microstates and developmental stages. NeuroImage, 16, 41-48.
Bosch-Bayard, J., Valdes-Sosa, P., Virues-Alba, T., Aubert-Vazquez, E., John, E. R., Harmony, T. et al. (2001). 3D statistical parametric mapping of EEG source spectra by means of variable resolution electromagnetic tomography (VARETA). Clin.Electroencephalogr., 32, 47-61.
Koenig, T., Marti-Lopez, F., & Valdes-Sosa, P. (2001). Topographic time-frequency decomposition of the EEG. Neuroimage., 14, 383-390.

MSN空间完美搬家到新浪博客!