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Greg Jefferis

@jefferis

Neural Circuits and Behaviour in Drosophila @ MRC LMB. PI @ flyconnectome @ CamZoology and @ virtualflybrain. Cambridge, UK. Previously @gsxej.

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20.08.2023
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Latest posts by Greg Jefferis @jefferis

We are excited to be recruiting a new tenure track group leader in the Structural Studies Division at MRC LMB! It is an amazing place to start your own lab.
@mrclmb.bsky.social

Please get in touch if you have any questions.
www.nature.com/naturecareer...

25.02.2026 22:25 πŸ‘ 51 πŸ” 54 πŸ’¬ 1 πŸ“Œ 0
addison-wheeler-fellowship - Durham University

🚨 Postdoc opportunity to study memory or nutrition in #Drosophila πŸͺ°

I am looking for a candidate to support for a 3 year Addison Wheeler Fellowship application lnkd.in/e2rvNf5x

Interested? Please send a CV & cover letter with brief research outline by 20th February to vincent.croset@durham.ac.uk

12.02.2026 15:31 πŸ‘ 14 πŸ” 21 πŸ’¬ 0 πŸ“Œ 1

Our new preprint is out!

A state-dependent neural circuit resolves approach–avoidance conflicts

www.biorxiv.org/content/10.6...

Fantastic work led by Devika Bodas, with key contributions from Marine Balcou, and a great collaboration with Lisa Scheunemann Lab, fearuting Şevval Demirci.

13.02.2026 14:29 πŸ‘ 47 πŸ” 19 πŸ’¬ 1 πŸ“Œ 2
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Academic Vacancies - Churchill College

Up to 16 postdoctoral by-Fellowships at @churchillcol.bsky.social, for postdoc researchers of Cambridge Univ & associated research institutes. Up to 3 yrs from 1 Oct 2026.
Dining rights, access to sports/music facilities, participation in academic & social life of College, some research expenses.

13.02.2026 18:30 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
We're hiring! This is a unique opportunity to translate our understanding of neural computation - from circuit-level mechanisms to computational principles -  into the human brain, through the establishment of cutting-edge human neural recording capabilities with collaborators in London and abroad.

We're hiring! This is a unique opportunity to translate our understanding of neural computation - from circuit-level mechanisms to computational principles - into the human brain, through the establishment of cutting-edge human neural recording capabilities with collaborators in London and abroad.

We’re hiring a Group Leader!

Join us to lead a transformative initiative in human systems neuroscience.

Find out more and apply ‡️

www.sainsburywellcome.org/content/curr...

13.02.2026 13:41 πŸ‘ 31 πŸ” 25 πŸ’¬ 1 πŸ“Œ 4
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M2 Systems Neuroscience: from cells to brain functions

🧠 We are pleased to announce that applications for the M2 Systems Neuroscience at the University Paris-Saclay are officially open πŸŽ‰
www.universite-paris-saclay.fr/formation/ma...

@univparissaclay.bsky.social @neuropsi.bsky.social

10.02.2026 09:00 πŸ‘ 2 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1

If you've had an amazing mentor that has shaped your and other colleagues' careers, this is the time to acknowledge them! See below and consider nominating them!

04.02.2026 08:46 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Very happy for this @ejneuroscience.bsky.social editorial on the importance of diverse research animals in neuroscience. We make the case that embracing a plurality of model organisms enriches the field and accelerates both basic and translational research. onlinelibrary.wiley.com/doi/10.1111/...

06.01.2026 07:47 πŸ‘ 27 πŸ” 17 πŸ’¬ 2 πŸ“Œ 1

Registration for the Ascona 2026 Meeting is now open. Go to asconacircuits.org to submit your abstract and register for the meeting! We are looking forward to seeing you in Switzerland this September! Ascona Meeting Organizers

05.01.2026 07:34 πŸ‘ 7 πŸ” 5 πŸ’¬ 0 πŸ“Œ 1
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Development's Pathway to Independence Programme Our grants support and encourage the sharing of knowledge throughout the community by facilitating international collaboration, event attendance and the organisation of scientific meetings, conference...

Applications are open for @dev-journal.bsky.social 2026 Pathway to Independence (PI) programme, supporting postdocs applying for group leader positions:

Mentoring
Profile raising
Leadership training
Network building

Spread the word...

www.biologists.com/grants/devel...

03.12.2025 06:56 πŸ‘ 73 πŸ” 83 πŸ’¬ 0 πŸ“Œ 1
Shades of blue and red in a slice through an immuno stained brain showing some deliciously lovely looking mushroom body lobes - ripe for investigation during a funded PhD - and the central complex. Image credit: Dr Max Farnworth

Shades of blue and red in a slice through an immuno stained brain showing some deliciously lovely looking mushroom body lobes - ripe for investigation during a funded PhD - and the central complex. Image credit: Dr Max Farnworth

🚨RA/PhD position available in evolutionary neurobiology 🚨

Working on a deep dive into circuit changes during mushroom body expansion in Heliconius butterflies @camzoology.bsky.social

- employment benefits
- 4 years funding
- 1000% fun

Deadline: 14/1/2026

Details:
www.cam.ac.uk/jobs/researc...

21.11.2025 14:30 πŸ‘ 72 πŸ” 65 πŸ’¬ 2 πŸ“Œ 4
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πŸ“’ We are organising the Senses in Motion conference for the third time, and we are now accepting abstracts for posters or talks.

Deadline for abstracts: 19 December
Conference dates: 18–21 May 2026
Location: Harnack House, Berlin

Register via this pageπŸ‘‡
sensesinmotion.org

#neuroskyence #neurosky

20.11.2025 18:23 πŸ‘ 20 πŸ” 9 πŸ’¬ 0 πŸ“Œ 0
Join the LMB's PhD programme!
Applications now open for October 2026
Deadline 2nd December 2025

Join the LMB's PhD programme! Applications now open for October 2026 Deadline 2nd December 2025

Want to join the LMB as a PhD student in October 2026?
You’ve got two weeks left to apply!
Visit our website for more details: www2.mrc-lmb.cam.ac.uk/students/int...
Applications close on 2nd December 2025.

18.11.2025 14:28 πŸ‘ 8 πŸ” 12 πŸ’¬ 0 πŸ“Œ 0
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🌟 Ready to take the next step in your career?

Applications are open for the Cambridge Biosciences Doctoral Training Programme! πŸ”¬

➑️ Fully funded opportunities: supported by the BBSRC

Learn more and apply now: bbsrcdtp.lifesci.cam.ac.uk/how-apply

#Postgraduate #Cambridge #PhD

11.11.2025 17:19 πŸ‘ 6 πŸ” 7 πŸ’¬ 0 πŸ“Œ 0

Does anyone know of good antibodies to tdTomato and GFP that they are happy with for ultrastructure or glut fixed tissues?

#SciSky πŸ§ͺ

11.11.2025 23:15 πŸ‘ 7 πŸ” 6 πŸ’¬ 5 πŸ“Œ 0
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Drosophila Neurobiology: Genes, Circuits & Behavior Cold Spring Harbor Laboratory Meetings & Courses -- a private, non-profit institution with research programs in cancer, neuroscience, plant biology, genomics, bioinformatics.

Excited to return as co-director of the CSHL Drosophila πŸͺ°Neurobiology course in 2026!
Application Deadline: March 27
meetings.cshl.edu/courses.aspx...
@cshlnews.bsky.social
@cshlaboratory.bsky.social
@cshlcourses.bsky.social
#cshlflycourse
#scicomm
#drosophila
πŸͺ°πŸ§ͺ

08.11.2025 15:47 πŸ‘ 27 πŸ” 9 πŸ’¬ 1 πŸ“Œ 0
Fellows Positions | Cold Spring Harbor Laboratory CSHL Simons Fellow in NEUROSCIENCE Cold Spring Harbor Laboratory (CSHL) is seeking to fill a Cold Spring Harbor Laboratory Fellow position in the area of NEUROSCIENCE (experimental and/or computationa...

Come join us as a CSHL-Simons Fellow!

supporting bold research programs aimed at tackling fundamental questions across all Neuroscience areas, from NeuroAI to brain body interactions. CSHL Fellows are appointed for 3-5 years and direct their own research groups.

www.cshl.edu/about-us/car...

25.10.2025 13:17 πŸ‘ 10 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Brandeis University, Biology Department Job #AJO30961, Assistant Professor in Biology and Neuroscience Program, Biology Department, Brandeis University, Waltham, Massachusetts, US

TT faculty job opening in #Neuroscience!
We are looking for a colleague to join us in our fantastic Biology Department and Neuroscience Program at Brandeis. We are a group of *very* collaborative, supportive, and productive scientists (& humans!) so please apply
academicjobsonline.org/ajo/jobs/30961

22.10.2025 23:28 πŸ‘ 86 πŸ” 102 πŸ’¬ 1 πŸ“Œ 3
a group of Drosophila erecta fruit flies on a small food patch. flies on white background

a group of Drosophila erecta fruit flies on a small food patch. flies on white background

Excited to share our new #biorxivpreprint

We discovered that the fruit fly #drosophila erecta requires food odor to mate and arousal is further enhanced by social group motion.

Cross-species analysis of brain activity reveals a novel gate evolved from within a conserved circuit

shorturl.at/gGYm7

16.10.2025 06:33 πŸ‘ 83 πŸ” 44 πŸ’¬ 12 πŸ“Œ 3
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As the first (and so far, only) male brain, we compared this connectome to the previously published #FlyWire #FAFB female dataset to investigate the structural differences across male and female brain connectomes. 5/10

15.10.2025 16:21 πŸ‘ 5 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
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Excited to share our new #biorxivpreprint:
β€œSexual dimorphism in the complete connectome of the Drosophila male central nervous system” www.biorxiv.org/content/10.1...

We describe the #connectomics reconstruction and analysis of an entire adult #maleCNS #drosophila central nervous system. 1/10

15.10.2025 16:17 πŸ‘ 123 πŸ” 67 πŸ’¬ 1 πŸ“Œ 5
Prieto Godino Lab | Cellular and molecular bases of neural circuit and behavioural evolution

We are recruiting PhD students! If you are interested in evolutionary neuroscience, consider applying: www.crick.ac.uk/careers-stud...

08.10.2025 20:51 πŸ‘ 19 πŸ” 25 πŸ’¬ 0 πŸ“Œ 0

Some fly neurons are β€œdimorphic”, existing in both males and females but connecting to different neighboring neurons. Neighbors may be β€œisomorphic”, the same in both male and female; or sex specific; or dimorphic themselves. Here's an example, the type AOTU012, present in left and right instances.

08.10.2025 09:11 πŸ‘ 16 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0

Wow congratulations @jkohl.bsky.social! Proud scientific parent :)

06.10.2025 21:50 πŸ‘ 9 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

And here's the official announcement from our Janelia collaborators with a fantastic visualisation from @philiphubbard.bsky.social. See more at male-cns.janelia.org/media. Downloads are humming and we have solved the first data access queries. Happy exploring! #drosophila #connectomics #malecns.

06.10.2025 14:59 πŸ‘ 5 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Male CNS Connectome A team of researchers has unveiled the complete connectome of a male fruit fly central nervous system β€”a seamless map of all the neurons in the brain and nerve cord of a single male fruit fly and the ...

We're very proud to be releasing the complete male fly CNS connectome!

It's the product of a huge team effort here at Janelia in partnership with the Cambridge Fly Connectomics group (@jefferis.bsky.social and colleagues), plus invaluable collaborators.

More soon...
www.janelia.org/project-team...

05.10.2025 18:02 πŸ‘ 70 πŸ” 31 πŸ’¬ 2 πŸ“Œ 1

Comparison with previous female connectomes reveals sex differences across the adult brain at synaptic resolution for the first time. Full news story and preprint describing this massive team effort coming soon!

05.10.2025 15:40 πŸ‘ 6 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1

This dataset provides two major advances. It is the first fully proofread and annotated brain and nerve cord connectome with 166,696 proofread neurons annotated with 11,691 cell types. It is also the first connectome of a male brain.

05.10.2025 15:40 πŸ‘ 5 πŸ” 2 πŸ’¬ 1 πŸ“Œ 1
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Male CNS Connectome A team of researchers has unveiled the complete connectome of a male fruit fly central nervous system β€”a seamless map of all the neurons in the brain and nerve cord of a single male fruit fly and the ...

Exciting news for #drosophila #connectomics and #neuroscience enthusiasts: the Drosophila male central nervous system connectome is now live for exploration. Find out more at the landing page hosted by our Janelia FlyEM collaborators www.janelia.org/project-team....

05.10.2025 15:40 πŸ‘ 143 πŸ” 69 πŸ’¬ 2 πŸ“Œ 8
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Interested in the mechanisms of neurogenesis, and how they might converge/differ across species, regions, and life epochs? Check this out, wonderful location and great science! Please RT

neuro-unige.ch/news/csf-mee...

05.10.2025 12:16 πŸ‘ 36 πŸ” 15 πŸ’¬ 2 πŸ“Œ 1