Tim Behrens
@behrenstimb.bsky.social
3.7K followers 210 following 320 posts
Slowly becoming a neuroscientist. EiC @elife.bsky.social
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behrenstimb.bsky.social
OK If we are moving to Bluesky I am rescuing my favourite ever twitter thread (Jan 2019).

The renamed:

Bluesky-sized history of neuroscience (biased by my interests)
Reposted by Tim Behrens
helencbarron.bsky.social
** We have up to TWO funded PhD positions available in our lab!! Apply below to find new ways to enhance memory👇 Pls retweet **

Deadline: 2nd December

1. Cross-species closed-loopTMR: tinyurl.com/bddu4tp6

2. TUS and TMR in humans:
tinyurl.com/jjws5ctj

Happy to chat to interested applicants.
Enhancing memory using cross-species closed-loop Targeted Memory Reactivation | mrcbndu
tinyurl.com
behrenstimb.bsky.social
Think I might also be the only person apart from Heidi who calls Matthew “Matt” as well. Perhaps I should stop being so presumptuous:)
Reposted by Tim Behrens
lhuntneuro.bsky.social
Looking for a PhD next year? Want to come and work on the next generation of OPM-MEG/EEG biomarkers in computational psychiatry?

Apply for our MRC iCase studentship with @mkflugge.bsky.social, collabs with @lilweb.bsky.social + industrial placement at P1Vital:
www.medsci.ox.ac.uk/study/gradua...
Development of robust, single-subject markers of predictive inference for computational psychiatry
www.medsci.ox.ac.uk
Reposted by Tim Behrens
gatsbyucl.bsky.social
🙋Are you interested in bridging theory & experiments?

Applications are now open for 2026 entry to the Gatsby Unit & SWC joint PhD programme.

Join us and be part of a vibrant research community!

💰 Fully-funded 4-year programme
ℹ️ www.ucl.ac.uk/life-science...

@sainsburywellcome.bsky.social
Reposted by Tim Behrens
kristorpjensen.bsky.social
I’m super excited to finally put my recent work with @behrenstimb.bsky.social on bioRxiv, where we develop a new mechanistic theory of how PFC structures adaptive behaviour using attractor dynamics in space and time!

www.biorxiv.org/content/10.1...
Reposted by Tim Behrens
behrenstimb.bsky.social
This is one of my favourite things ever. From the awesome @kristorpjensen.bsky.social
kristorpjensen.bsky.social
I’m super excited to finally put my recent work with @behrenstimb.bsky.social on bioRxiv, where we develop a new mechanistic theory of how PFC structures adaptive behaviour using attractor dynamics in space and time!

www.biorxiv.org/content/10.1...
behrenstimb.bsky.social
The current paper is about complex multistep decisions when the *reward function* is known, but there is another one on the way about how to generalise these ideas to value problems when the *reward function must be learnt from repeated experience* (with Jo Warren, Kris and James W)
behrenstimb.bsky.social
The post above is slightly oversimplified. I did it for clarity, but then it kept me up last night so I am correcting it now. It should have read:
behrenstimb.bsky.social
In the Tanji papers they just repeat one of a few sequences (maximum 6 I think), and although it is hard to be sure because the data aren't available for reanalysis, the published results mostly align with the optimal solution: Separating the sequences into different neural memories.
behrenstimb.bsky.social
The point of the kind of solution Kris shows above (and Mohamady showed in mice and LiPing Wang has shown in monkeys), is that it can flexibly construct *any* sequence.
behrenstimb.bsky.social
In brief, if you only ever have to repeat a few learnt sequences you should not use this kind of solution. Neurons should not code for elemental steps that generalise across sequences. Instead you should make new neural representations for each remembered sequence.
behrenstimb.bsky.social
It's really hard to tell whether the Tanji neurons are doing this but they are probably not. My colleague Will Dorrell (newly PhDed), with James Whittington and Peter Latham, has a beautiful analysis of when you should and shouldn't use this kind of solution.
behrenstimb.bsky.social
Awesome 4 year phd in compsys neuro !!
sainsburywellcome.bsky.social
Applications are now open for the SWC Systems Neuroscience PhD Programme.

Join us in London!

🧠 World-class neuroscience training
💰 Fully-funded 4-year programme
🖥️ Close links to @gatsbyucl.bsky.social

Apply by 3 Nov: www.sainsburywellcome.org/web/content/...
behrenstimb.bsky.social
The overall framework agrees with this idea. The current paper is about complex multistep decisions when the goal state is known, but there is another one on the way about how to generalise these ideas to value problems when the goal state needs to be inferred (with Jo Warren, Kris and James W)
behrenstimb.bsky.social
Ooh cool. Lots of new cites @kristorpjensen.bsky.social! Thanks Dick. This is exactly the point of bsky and biorxiv :)
behrenstimb.bsky.social
This is one of my favourite things ever. From the awesome @kristorpjensen.bsky.social
kristorpjensen.bsky.social
I’m super excited to finally put my recent work with @behrenstimb.bsky.social on bioRxiv, where we develop a new mechanistic theory of how PFC structures adaptive behaviour using attractor dynamics in space and time!

www.biorxiv.org/content/10.1...
behrenstimb.bsky.social
Look at Edinburgh being stunning for British Cognitive Neurosciences
behrenstimb.bsky.social
I have the feeling that a lot of modern systems/circuit neuro would have been included by James in this aesthetic or emotional part of the mind? All of reward circuitry? Many of the innate behaviours (fear/escape/pup weaning etc.)? Lots of social behaviour (social hierarchy/dominance etc.)?
Reposted by Tim Behrens
sjblakemore.bsky.social
I was explaining to my Ukrainian colleague the phrase ‘There’s no such thing as a free lunch’. She told me the equivalent in Ukrainian is ‘The only free cheese is in the mousetrap’ - which is so much better
behrenstimb.bsky.social
Ooh this is cool. Thank you!!