#ohbm — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #ohbm, aggregated by home.social.
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For those of us still trying to avoid illness, I give high marks for the OHBM venue (Brisbane convention center): CO2 levels have stayed quite low in the auditorium, poster hall, and common areas. The symposium rooms were not as good; if more than a quarter or so full the CO2 increases rapidly. I also like that there are many easy-to-reach nice outdoor gathering places, and the opening night reception included a large patio.
None of that helps much when unmasked folks are talking loudly at close proximity, unfortunately, which happens a lot at posters, dinners, bars, etc. I'm not the only attendee masking (and no hassle about it), but we are in the distinct minority.
Mentions and black humor about covid and "colds" started at the opening ceremony and keep popping up; plenty of coughing and at least one person saying they were currently running a fever. It'd be interesting to track proportion coughing on the audio recordings over the conference and see if it actually increases or just seems to.
I haven't usually been the only person masking on trains, buses, or in shops around Brisbane, either, which is nice.
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OHBM is going very well (say hello if you're here), but its mirror-brain logo feels all too appropriate; we're through the looking glass.
At a symposium two speakers presented via recording because of "visa issues", a euphemism for "if they left the US they may not have been able to return". Conversations veer between current projects, methodological minutiae, and who just had their funding stopped, what strategy might keep a lab going, what non-science jobs might exist, how long US science may last.
Would frank discussion of what we as scientists could do help? Heck if I know. Not everyone is a US citizen or resident of course, but everyone does interact with US scientists and their work; "the current situation" feels like the elephant in the room; the devil we don't name for fear to do so could cause his attention to fall upon us.
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#OHBM coming up next week; anyone else planning to be there?
I'll have a poster (1046) about #fMRI "crescent" artifacts; it's uploaded to the OHBM site and https://osf.io/pzj39.
I posted a bit of poster commentary at https://mvpa.blogspot.com/2025/06/ohbm-2025-lets-chat-about-crescents.html, excerpted here. I still don't know exactly how much the artifact affects fMRI signal quality, but am confident that there is enough likelihood of a substantial negative impact that they shouldn't be ignored.
It seems to be a given in the MR physics literature that Nyquist ghosts appreciably degrade EPI. Quantifying the impact in GLM results is difficult, however, especially after preprocessing, smoothing, in group analyses , and when runs of different encoding directions are analyzed together. Qualitatively, I can see crescents in single-subject statistical images, but that's of course not a typical analysis.
Even so, I think there's enough evidence to recommend that crescent artifacts be one of the criteria for choosing acquisition protocols: select parameters so that crescent artifacts are minimized and/or appear in brain areas of low theoretical interest. Since the crescent artifact likely reduces BOLD signal quality somewhat, and is more often prominent in people with smaller brains, there's a risk of bias if an experimentally-important participant characteristic (e.g., age, sex) is associated with differences in head size; extra care should be taken in these cases.
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For me, the #OpenScienceRoom has been the best thing at #OHBM. It would be very shortsighted to limit or remove it. I've signed the petition to preserve it: https://chng.it/6NDNY84YyV
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Engaging backstory on the evolution of meta-analyses and large scale collaborations ( i.e., #ABCD ) by Angela Laird as interviewed by Peter Bandettini on the #neurosalience podcast ( #FMRI , #neuroscience , #ohbm ):
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Engaging backstory on the evolution of meta-analyses and large scale collaborations ( i.e., #ABCD ) by Angela Laird as interviewed by Peter Bandettini on the #neurosalience podcast ( #FMRI , #neuroscience , #ohbm ):
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Engaging backstory on the evolution of meta-analyses and large scale collaborations ( i.e., #ABCD ) by Angela Laird as interviewed by Peter Bandettini on the #neurosalience podcast ( #FMRI , #neuroscience , #ohbm ):
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Engaging backstory on the evolution of meta-analyses and large scale collaborations ( i.e., #ABCD ) by Angela Laird as interviewed by Peter Bandettini on the #neurosalience podcast ( #FMRI , #neuroscience , #ohbm ):
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Engaging backstory on the evolution of meta-analyses and large scale collaborations ( i.e., #ABCD ) by Angela Laird as interviewed by Peter Bandettini on the #neurosalience podcast ( #FMRI , #neuroscience , #ohbm ):
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Long shot, but if you're planning to attend #OHBM2025 and interested in a session I'd like to propose, please contact me.
Its working title is “Proactive human subjects research: identifying new privacy-related risks and strategies for their minimization”.
I’m thinking of things like not asking participants about pregnancy or sex assigned at birth unnecessarily; also less direct possible risks like use of AI, cloud storage, and phone apps (e.g., for passive sensing).
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Another great #OHBM #neurosalience interview with #FMRI analysis guru Andy Jahn (+ check out his free(!) book: https://andysbrainbook.readthedocs.io/en/latest/):
https://podcasters.spotify.com/pod/show/ohbm/episodes/S04E04-Educating-the-neuroimaging-world-with-Andys-Brain-Book-e2c9972 -
@stefanowitsch I noticed similar for #OHBM2023 (#fMRI): not a lot of discussion on here (though some!), but also not as much on twitter as past years. (I logged in to twitter for the first time this year just to check for conference info; the #OHBM organizers still posted there.)
A lot of science social media folks seems to be waiting, though I don't know for what.
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I completed the #OHBM #OHBM2023 attendee survey this morning, and was disappointed (though not surprised) by the lack of post-conference #covid diagnosis questions. I have heard of cases anecdotally, but was hoping we'd get actual stats on how many folks caught covid during the conference. I fear it's a large proportion: the Montreal Convention Center ventilation was not great, no sign of filtration, and very few masks.
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As a way to whittle down the absurd number of posters at this conference I decided to check out any poster where the presenter was still wearing a mask.
Depressingly that whittled it down to 6 posters but interestingly those 6 included 100% of the people I've seen use the conference hashtag on the fediverse.
#ohbm #ohbm2023 -
Achievement unlocked: #OHBM2023 poster hall located.
My poster is number 700 (up now), "Which acquisition? Choosing protocols for task fMRI studies". Stop by (or find me) to chat about testing acquisitions, QC, base R vs tidyverse, etc.
(And the poster hall? Same level as registration, down the hall on the left, keep on going. Restrooms are upstairs, so you may want to plan ahead. 😅) #OHBM
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If you have a poster or talk at #ohbm and you're on the fediverse let me know so I can drop by.
Gotta decide what I'm going to somehow and I'm not smart enough to figure out how to use the schedule in the app. -
I looked around the #OHBM2023 convention center a bit this morning. #OHBM will be at the southwest end of the building, looking over Pl Jean-Paul-Riopelle. There are sets of escalators along the multicolored windows forming the end of the building; looks like registration will be one level up and the sessions up another. It'll likely be busy tomorrow morning, if everyone tries to pick up their badges (and upload slides?) before the 800 start of the courses.
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I'm looking forward to participating in an #OHBM #OHBM2023 education session on "Making Quality Control Part of Your Analysis: Learning with the FMRI Open QC Project" The detailed schedule isn't in the official program, but you can find it here: https://docs.google.com/document/d/1scHKmypO38XYDqUPQoCMjYini1McKFJqIt5dZiTVkCk/edit?usp=sharing Thank you to @JosetAEtzel and @afni_pt for organizing and inviting me to present.
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Heading to #OHBM #OHBM2023 soon. I compiled all multi-echo fMRI content at https://github.com/ME-ICA/ohbm-2023-multiecho If you use multi-echo fMRI on your poster/talk and want it added, let me know. @dowdlelt @tsalo @Nathan_Spreng @emdupre @laurenatlas @neuro_steel @esfinn @poldracklab
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Man, looked up when Hamburg was and has it been 9 years since I attended an #OHBM conference?
Though with the "pretend it's 2019" conference policies around masking and vaccination and exclusionary (for so many more reasons than COVID) lack of a virtual option I'm far less enthusiastic about attending than 9 years ago. -
@JosetAEtzel Thanks for representing #OHBM on the #fediverse (wish I could go — my first was Montreal ‘98)!
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Goal (and necessity) for tomorrow: get ready for #OHBM2023!
Not many of us on mastodon, I think, and I'm definitely feeling out of the loop a bit. I'll look for the open science room mattermost; please share any other pointers. (I haven't logged in to twitter so far in 2023, but am wondering if I'll have to to get the #OHBM news and chatter.)
Going to OHBM and want to chat about #fMRI quality control, analysis, #rstats? Let me know! ☺️
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I won't claim to not appreciate the extra time to prep my OHBM talk (though my poster is uploaded!), but am irritated by the changing deadlines ... at the moment https://event.fourwaves.com/ohbm2023/pages still states, "The deadline for all content uploads is: June 30, 2023 at 11:59pm EDT, USA. There will be no exceptions past this date."
Evidently OHBM is now one of those "assume there will be an extension" conferences. #OHBM #OHBM2023
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Are you going to #OHBM this year?
#neuroscience -
Wish me luck: I'm going to start my #OHBM poster now, two months early! I always prefer to have things ready ahead of time, but this might be a personal record (assuming I actually get it done before June ...).
Step 1: Look at the abstract and remind myself of the poster topic. 😂
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@JosetAEtzel @dpat Yes, the MRIQC team participated in the #FMRI Open #QC Project (link below) and are planning to attend the #OHBM course. I hope you can join as well; it'd be great to hear more about your tool, and chat about QC!
https://www.frontiersin.org/articles/10.3389/fnimg.2022.1073734/full
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#OHBM2023 bound! "Making Quality Control Part of Your Analysis: Learning with the #FMRI Open #QC Project" has been accepted as an #OHBM course.
I'm really looking forward to discussing QC with everyone, including fellow presenters Rasmus Birn, Xin Di (@dixy0), @DanHandwerker, Rebecca Lepping, Francesca Morfini, Celine Provins, Paul Taylor (@afni_pt), Brendan Williams, and Chao-Gan Yan. https://osf.io/qaesm
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A methods paper of mine is now at https://doi.org/10.3389/fnimg.2023.1070274 . This little #NewNeuroPaper demonstrates human task #fMRI quality control, as part of the FMRI Open QC Project (which I hope to discuss at #OHBM and elsewhere as it wraps up).
Its supplemental (https://doi.org/10.17605/OSF.IO/HT543) may be of interest to #rstats folks, particularly if looking for examples of #baseR #knitr #graphics and/or scripts aiming to minimize dependencies and maximize long-term usability.
