<font face="Default Sans Serif,Verdana,Arial,Helvetica,sans-serif" size="2"><div style=""><div style=""><div style=""><div style=""><font face="Default Monospace, Courier New, Courier, monospace" size="3" style="">Boa Tarde a todos,</font></div><div style=""><font face="Default Monospace, Courier New, Courier, monospace" size="3"><br></font></div><div style=""><font face="Default Monospace, Courier New, Courier, monospace" size="3"><br></font></div><div style=""><font face="Default Monospace, Courier New, Courier, monospace" size="3">Gostaria de convida-los para o Seminario do DEST a ser realizado na sexta-Feira, </font></div><div style=""><font face="Default Monospace, Courier New, Courier, monospace" size="3">11 de julho o qual, <font color="#cc0000">excepcionalmente, ocorrerá às 10:00</font>. Este seminário será proferido </font></div><div style=""><font face="Default Monospace, Courier New, Courier, monospace" size="3">por Michelle Miranda , professora de Estatística na <span style="font-variant-ligatures: none;">University of Victoria, Ca.</span></font></div><div style=""><span style="font-variant-ligatures: none;"><font face="Default Monospace, Courier New, Courier, monospace" size="3"><br></font></span></div><div style=""><font face="Default Monospace, Courier New, Courier, monospace" size="3"><span style="font-variant-ligatures: none;">Michelle fez sua gradaução na UFMG e seu doutorado na </span><span style="font-variant-ligatures: none;">University of North Carolina </span></font></div><div style=""><font face="Default Monospace, Courier New, Courier, monospace" size="3"><span style="font-variant-ligatures: none;">Chapel Hill, USA. Sua pesquisa esta focada </span></font><span style="font-family: "Default Monospace", "Courier New", Courier, monospace; font-size: medium; font-variant-ligatures: none;">em amodelagem de dados funcionais de </span></div><div style=""><span style="font-family: "Default Monospace", "Courier New", Courier, monospace; font-size: medium; font-variant-ligatures: none;">alta-dimensao, neuroimagem e aprendizado de maquina. Mas informacoes </span><span style="font-family: "Default Monospace", "Courier New", Courier, monospace; font-size: medium; font-variant-ligatures: none;">sobre Michelle </span></div><div style=""><span style="font-family: "Default Monospace", "Courier New", Courier, monospace; font-size: medium; font-variant-ligatures: none;">podem ser encontradas em </span><span style="font-family: "Default Monospace", "Courier New", Courier, monospace; font-size: medium; font-variant-ligatures: none;">https://www.uvic.ca/science/math-statistics/people/home/faculty/miranda_michelle.php</span></div><div style=""><span style="font-family: "Default Monospace", "Courier New", Courier, monospace; font-size: medium; font-variant-ligatures: none;"><br></span></div></div><div style=""><font size="3" face="Default Monospace, Courier New, Courier, monospace">otimo fim de semana a todos</font></div><div style=""><font size="3" face="Default Monospace, Courier New, Courier, monospace">Rosangela</font></div><div style=""><font size="3" face="Default Monospace, Courier New, Courier, monospace"><br></font></div><div style=""><font size="3" face="Default Monospace, Courier New, Courier, monospace">PS: Sobre o Seminario</font></div></div><div style=""><div><font face="Default Monospace, Courier New, Courier, monospace" size="3"><br></font></div><div><br></div></div></div><div class="x_elementToProof" style="margin-top: 1em; margin-bottom: 1em;"><font color="#000000" style="" face="Default Monospace, Courier New, Courier, monospace" size="4"><b style="">Mapping Long Memory in Resting-State fMRI: Age-Related Changes in the Hippocampus from the ADHD-200 Dataset</b></font></div><div class="x_elementToProof" style="margin-top: 1em; margin-bottom: 1em;"><font face="Default Monospace, Courier New, Courier, monospace" size="4"><b><font color="#000000" style="">Profa Michelle Miranda (</font><span style="font-variant-ligatures: none;">University of Victoria</span><span style="font-variant-ligatures: none;"> )</span></b></font></div><div class="x_elementToProof" style="margin-top: 1em; margin-bottom: 1em;"><font color="#000000" face="Default Monospace, Courier New, Courier, monospace" size="3"><br>Resting-state functional MRI (fMRI) measures spontaneous brain activity while the subject is not engaged in any specific task, and has become a standard tool for studying intrinsic brain function. The res ulting time series often display long-range temporal dependence, which is not adequately captured by models widely used in neuroscience that assume independence or short-memory autoregressive structure. In this talk, I introduce a statistical pipeline that models these dependencies using a long-memory (LM) framework, where autocorrelations decay according to a power law. LM parameters are estimated voxelwise via a wavelet-based Bayesian method, yielding spatial maps of temporal dependence. These maps are then projected onto a lower-dimensional space using a composite basis and related to subject-level covariates through regression. While resting-state studies typically focus on functional connectivity, it is hypothesized that the LM parameter captures complementary aspects of intrinsic brain activity. Applying this approach to the ADHD-200 dataset, we found that age in children is positively associated with the LM parameter in the hippocampus, after adjusting for ADHD sympt om severity and medication status. This work highlights the potential of long-memory modeling for studying developmental patterns in resting-state brain activity and provides a flexible framework for analyzing large-scale neuroimaging data.</font></div><div style=""><div style=""><font size="3" face="Default Monospace, Courier New, Courier, monospace">Data: 11 de julho de 2025</font></div><div style=""><font size="3" face="Default Monospace, Courier New, Courier, monospace">Horario:10:00</font></div><div style=""><font size="3" face="Default Monospace, Courier New, Courier, monospace">Local: Sala 2076-ICEX</font></div></div><div style="padding-left: 5px;"><div style="padding-right: 0px; padding-left: 5px; border-left: 2px solid black;"><abe@lists.ime.usp.br style=""><abe-bounces@lists.ime.usp.br style=""><div><font face="Courier New,Courier,monospace" size="3"><br></font></div></abe-bounces@lists.ime.usp.br></abe@lists.ime.usp.br></div></div><div></div></font>