Arif A. Hamid, Ph.D.
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arifahamid.bsky.social
Arif A. Hamid, Ph.D.
@arifahamid.bsky.social
Professor of Neuroscience @UMN Medical School | Neurobiology of Reinforcement Learning #BlackinSTEM #NeuroscienceinAfrica
HamidLab.org
Reposted by Arif A. Hamid, Ph.D.
I am super happy to share that our project on training biophysical models with Jaxley is now published in Nature Methods: www.nature.com/articles/s41...
Jaxley: differentiable simulation enables large-scale training of detailed biophysical models of neural dynamics - Nature Methods
Jaxley is a versatile platform for biophysical modeling in neuroscience. It allows efficiently simulating large-scale biophysical models on CPUs, GPUs and TPUs. Model parameters can be optimized with ...
www.nature.com
November 13, 2025 at 12:38 PM
Reposted by Arif A. Hamid, Ph.D.
#SfN25 attendees - make sure to head to the posters when you get to the meeting on Saturday afternoon (V7-V11: Gretchen, Megan, Margaret, Louisa, Bella) and Sunday morning (KK17: Micaela) to hear about our work. We're printing the posters now and they look rad.
November 11, 2025 at 5:00 PM
Reposted by Arif A. Hamid, Ph.D.
VTA dopamine neuron activity produces spatially organized value representations https://www.biorxiv.org/content/10.1101/2025.11.04.685995v1
November 6, 2025 at 7:16 PM
Reposted by Arif A. Hamid, Ph.D.
Meet our 2025 cohort of Next Generation Leaders! For the next 3 years, they will network with other rising stars, participate in professional development, and share their ideas for future research directions.
November 4, 2025 at 4:25 PM
Reposted by Arif A. Hamid, Ph.D.
Join us for this exciting talk this evening at 5pm ET (9am AED)
DM us for zoom link
We can't wait to hear from Dr. Pulin Gong next week in our monthly online seminar series on traveling waves.

Join us on November 4th at 5p ET!
Please note the change in time to accommodate our Aussie friend
November 4, 2025 at 4:16 PM
Reposted by Arif A. Hamid, Ph.D.
Action prediction relies on high-level holistic and low-level kinematics priors https://www.biorxiv.org/content/10.1101/2025.10.09.681210v1
October 10, 2025 at 11:15 PM
Reposted by Arif A. Hamid, Ph.D.
The effects of action-based predictions in early visual cortex https://www.biorxiv.org/content/10.1101/2025.08.28.672792v1
September 2, 2025 at 3:15 AM
Proud of Amy and Nick, who review technical and theoretical gaps in timescales of dopamine fluctuations.

We argue that DA fluctuations are hierarchical control signals, and “tonic” DA relays goal alignment across planning horizons and C-BG hierarchy.

www.sciencedirect.com/science/arti...
Timescales of dopamine release in the striatum as a window into hierarchical control
The reinforcement learning community has made significant progress in understanding dopamine (DA) in reward learning, cognitive control, and motivatio…
www.sciencedirect.com
August 23, 2025 at 2:58 AM
Reposted by Arif A. Hamid, Ph.D.
Just gave my lecture at @imbizo.bsky.social summer school today. What an amazing school both in terms of science and social impact --and the place is breathtaking! Now, time to enjoy the summer time with @therealdrdukes.bsky.social, @arifahamid.bsky.social, and all the students and tutors 🏖️
January 15, 2025 at 8:46 PM
Reposted by Arif A. Hamid, Ph.D.
We made it to South Africa safely and this sunset was worth the two red-eye flights to get here 🇿🇦
January 13, 2025 at 7:14 PM
Reposted by Arif A. Hamid, Ph.D.
New results! Led by @jbarbosa.org It's not just that neurons are spiking, it is the geometry of their patterns of spiking.
Quantifying Differences in Neural Population Activity With Shape Metrics
www.biorxiv.org/content/10.1...
January 13, 2025 at 8:10 PM
Reposted by Arif A. Hamid, Ph.D.
I wrote a piece for @thetransmitter.bsky.social about why I love participating in experimental summer courses, particularly @nsb-mbl.bsky.social.

www.thetransmitter.org/craft-and-ca...
January 13, 2025 at 5:48 PM
Reposted by Arif A. Hamid, Ph.D.
December 23, 2024 at 6:14 PM