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Amanda Mejia

@mandymejia.bsky.social
166 followers 83 following 15 posts

Associate Professor of Statistics at Indiana University, statistical analysis of functional neuroimaging data, PI of the StatMIND lab

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Amanda Mejia @mandymejia.bsky.social · 18/09/2026
📣 ciftiTools macOS Tahoe users: your cortical surface plots are back! As a bonus, multiple PNGs now render invisibly instead of opening multiple XQuartz windows. To get it: update.packages("ciftiTools"). See how it works in the updated vignette at www.statmindlab.com/software. #OHBM #fMRI #rstats
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Reposted by Amanda Mejia
Paul Taylor @afni-pt.bsky.social · 31/08/2026
Have you ever felt like something was missing from your #fmri results? Have you been worried about potential reproducibility issues? Well, this new @natmethods.nature.com article with 40+ coauthors shows how the simple change to transparent thresholding helps both. Go Figure! rdcu.be/B4tikBETdQZa
A comparison of old and new thresholding approaches for fMRI data. The newer, transparent thresholding allows for interpreting context, more complete modeling, a reduction of biases and an increase in meaningful content. This all leads to more accurate interpretations and improved reproducibility evaluations.
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Amanda Mejia @mandymejia.bsky.social · 27/03/2026
What are the downstream implications of censoring high motion volumes in fMRI? Two new preprints find that aggressive censoring leads to noisier FC, more attenuated and variable BWAS, and worse personalized TMS targets. arxiv.org/html/2603.07... www.biorxiv.org/content/10.6...
arxiv.org
Excessive data censoring in fMRI undermines individual precision and weakens brain-behavior associations
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Amanda Mejia @mandymejia.bsky.social · 20/11/2025
Yes, it totally is! I’m pumped to see AFNI making Bayesian modeling for fMRI widely accessible.
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Amanda Mejia @mandymejia.bsky.social · 17/06/2025
Looking forward to #OHBM2025 in Brisbane next week! My lab is recruiting a postdoc & neuroimaging analyst/developer to support our NIH funded work in fMRI-based Alzheimer's biomarker development (NIA R01AG083919). Email or DM if you want to meet up in Brisbane! www.statmindlab.com/join-us
statmindlab.com
Home
What can we do with functional MRI data? For many years, fMRI has been used to discover population-level patterns of brain function, organization and connectivity, and to understand differences in t...
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Amanda Mejia @mandymejia.bsky.social · 10/06/2025
Had a blast talking with Andy Jahn about individualized neuroimaging analysis and Bayesian approaches on Andy’s BrainCast. Andy, thank you for being a wonderful and engaging host! youtu.be/nctWLaZWsQE?...
youtu.be
Bayesian Statistics and Individualized Neuroimaging | Amanda Mejia (Andy's BrainCast #005)
YouTube video by Andrew Jahn
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Amanda Mejia @mandymejia.bsky.social · 12/04/2025
Transparency matters when reporting results in neuroimaging! arxiv.org/abs/2504.07824 This could be a landmark in setting publishing standards for interpretability/reproducibility. Stellar work by @afni-pt.bsky.social @fmri-today.bsky.social @brightmg.bsky.social @gangchen6.bsky.social et al.
Opaque thresholding hides information: context around statistically significant clusters is removed, treats subthreshold regions as having no activity. Transparent thresholding shows information: context around significant clusters is displayed, can observe relative importance of subthreshold regions.
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Amanda Mejia @mandymejia.bsky.social · 08/04/2025
Excited to be in Salt Lake City for our 2-week NIH training course in Advanced Statistics in Neuroimaging & Genetics! Today-tomorrow I'm teaching longitudinal & Bayesian modeling in neuroimaging to a stellar group of students. medicine.utah.edu/psychiatry/a...
medicine.utah.edu
Advanced Statistical Methods in Neuroimaging and Genetics
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Reposted by Amanda Mejia
Imaging Neuroscience @imagingneurosci.bsky.social · 29/12/2024
2024 was the first full calendar year for Imaging Neuroscience @mitpress - 350 papers published. We're proud of how the brain imaging community enthusiastically embraced open access non-profit publishing. Our aim is to be *your* journal. Full size PDF: drive.google.com/file/d/1M170...
A collage of figures from the 350 papers published in Imaging Neuroscience in 2024.
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Amanda Mejia @mandymejia.bsky.social · 26/06/2024
Come learn how easy & powerful spatial Bayesian fMRI modeling can be with the BayesfMRI package! Talk at 11:30 today in Hall D2, or stop by poster 1325. Demo link at statmindlab.com/software. #ohbm2024 @fmristats.bsky.social
statmindlab.com
Software
Read, write, visualize and manipulate surface and "grayordinate" neuroimaging file formats. GitHub, CRAN, Neuroconductor Vignette
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Amanda Mejia @mandymejia.bsky.social · 24/06/2024
Hey @ohbmtrainees.bsky.social, my lab statmindlab.com is recruiting for a postdoc and a neuroimaging data analyst / software developer. Message or email afmejia@iu.edu if you're interested in meeting up during #OHBM2024!
statmindlab.com
Home
What can we do with functional MRI data? For many years, fMRI has been used to discover population-level patterns of brain function, organization and connectivity, and to understand differences in t...
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Amanda Mejia @mandymejia.bsky.social · 24/06/2024
Well, hello Blue Sky! It seems nice over here. Let's keep spreading the word! #OHBM2024
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