#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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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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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.
-
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.
-
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 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 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.
-
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.
-
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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#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.
-
#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.
-
#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.
-
#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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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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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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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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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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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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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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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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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 -
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 -
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 -
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 -
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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@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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@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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@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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@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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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.
-
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.
-
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.
-
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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Refactored last week's #ohbm #brainhack project (which you might recall was a mobile brain scan viewer using React Native / Expo Go) to upload the voxel data as a 3d texture so that it can do everything on the GPU, and only needs to send the slice number to the shader after the initial setup instead of needing to look up / send the intensity for every pixel on the screen. It's super responsive now.
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Refactored last week's #ohbm #brainhack project (which you might recall was a mobile brain scan viewer using React Native / Expo Go) to upload the voxel data as a 3d texture so that it can do everything on the GPU, and only needs to send the slice number to the shader after the initial setup instead of needing to look up / send the intensity for every pixel on the screen. It's super responsive now.
-
Refactored last week's #ohbm #brainhack project (which you might recall was a mobile brain scan viewer using React Native / Expo Go) to upload the voxel data as a 3d texture so that it can do everything on the GPU, and only needs to send the slice number to the shader after the initial setup instead of needing to look up / send the intensity for every pixel on the screen. It's super responsive now.
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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
