Rani Gera
@ranigera.bsky.social
Postdoc in social and decision neuroscience @Caltech, interested in habits, decision making, associative learning and mood
Reposted by Rani Gera
After 5 years of data collection, our WARN-D machine learning competition to forecast depression onset is now LIVE! We hope many of you will participate—we have incredibly rich data.
If you share a single thing of my lab this year, please make it this competition.
eiko-fried.com/warn-d-machi...
If you share a single thing of my lab this year, please make it this competition.
eiko-fried.com/warn-d-machi...
WARN-D machine learning competition is live » Eiko Fried
If you share one single thing of our team in 2026—on social media or per email with your colleagues—please let it be this machine learning competition. It was half a decade of work to get here, especi...
eiko-fried.com
January 7, 2026 at 7:39 PM
After 5 years of data collection, our WARN-D machine learning competition to forecast depression onset is now LIVE! We hope many of you will participate—we have incredibly rich data.
If you share a single thing of my lab this year, please make it this competition.
eiko-fried.com/warn-d-machi...
If you share a single thing of my lab this year, please make it this competition.
eiko-fried.com/warn-d-machi...
Reposted by Rani Gera
This paper had a pretty shocking headline result (40% of voxels!), so I dug into it, and I think it is wrong. Essentially: they compare two noisy measures and find that about 40% of voxels have different sign between the two. I think this is just noise!
Would love to hear expert views on this paper. It appears to show that the operationalization of brain activity the field has relied on for 3 decades—the BOLD response—is not actually a sensible measure of brain activity.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
BOLD signal changes can oppose oxygen metabolism across the human cortex - Nature Neuroscience
Using quantitative brain imaging, the authors show opposite fMRI BOLD signal to metabolic activity due to variable oxygen extraction across the human cortex. This questions the canonical interpretatio...
www.nature.com
January 5, 2026 at 5:22 PM
This paper had a pretty shocking headline result (40% of voxels!), so I dug into it, and I think it is wrong. Essentially: they compare two noisy measures and find that about 40% of voxels have different sign between the two. I think this is just noise!
Reposted by Rani Gera
Greater automaticity -> greater devaluation sensitivity?? my mind -> blown
Two facets of automaticity: motor automaticity opposes habit formation: https://doi.org/10.31234/osf.io/xatzp_v1
December 25, 2025 at 1:45 AM
Greater automaticity -> greater devaluation sensitivity?? my mind -> blown
Reposted by Rani Gera
Two facets of automaticity: motor automaticity opposes habit formation: https://doi.org/10.31234/osf.io/xatzp_v1
December 21, 2025 at 10:41 PM
Two facets of automaticity: motor automaticity opposes habit formation: https://doi.org/10.31234/osf.io/xatzp_v1
💥NEW PREPRINT💥: I’m excited to share our new work with
@cfcamerer.bsky.social and John O’Doherty!
We investigated how habit and motor automaticity are related across 5 datasets with 1,000+ participants, using a novel task and existing paradigms
(1/X)
doi.org/10.31234/osf...
@cfcamerer.bsky.social and John O’Doherty!
We investigated how habit and motor automaticity are related across 5 datasets with 1,000+ participants, using a novel task and existing paradigms
(1/X)
doi.org/10.31234/osf...
OSF
doi.org
December 24, 2025 at 8:48 PM
💥NEW PREPRINT💥: I’m excited to share our new work with
@cfcamerer.bsky.social and John O’Doherty!
We investigated how habit and motor automaticity are related across 5 datasets with 1,000+ participants, using a novel task and existing paradigms
(1/X)
doi.org/10.31234/osf...
@cfcamerer.bsky.social and John O’Doherty!
We investigated how habit and motor automaticity are related across 5 datasets with 1,000+ participants, using a novel task and existing paradigms
(1/X)
doi.org/10.31234/osf...
Reposted by Rani Gera
New paper from our lab on the social determinants of successful dyadic foraging. Thanks to Ketika Garg and Wenning Deng for all their hard work!
osf.io/preprints/ps...
osf.io/preprints/ps...
OSF
osf.io
December 21, 2025 at 1:28 AM
New paper from our lab on the social determinants of successful dyadic foraging. Thanks to Ketika Garg and Wenning Deng for all their hard work!
osf.io/preprints/ps...
osf.io/preprints/ps...