Greg Jefferis
@jefferis.bsky.social
Neural Circuits and Behaviour in Drosophila @ MRC LMB. PI @ flyconnectome @ CamZoology and @ virtualflybrain. Cambridge, UK. Previously @gsxej.
Pinned
Greg Jefferis
@jefferis.bsky.social
· Aug 21
Neuronal diversity is written in transcriptional codes 🧬. But what is the logic of these codes that define cell types and wiring patterns?
To find out we built a #scRNAseq developmental atlas of the Drosophila nerve cord and linked it to the #connectome 🪰🧠
#preprint thread ⬇️1/8
To find out we built a #scRNAseq developmental atlas of the Drosophila nerve cord and linked it to the #connectome 🪰🧠
#preprint thread ⬇️1/8
Reposted by Greg Jefferis
🚨 Postdoc opportunity to study memory or nutrition in #Drosophila 🪰
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 [email protected]
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 [email protected]
addison-wheeler-fellowship - Durham University
www.dur.ac.uk
February 12, 2026 at 3:31 PM
🚨 Postdoc opportunity to study memory or nutrition in #Drosophila 🪰
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 [email protected]
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 [email protected]
Reposted by Greg Jefferis
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.
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.
www.biorxiv.org
February 13, 2026 at 2:29 PM
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.
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.
Reposted by Greg Jefferis
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.
Dining rights, access to sports/music facilities, participation in academic & social life of College, some research expenses.
Academic Vacancies - Churchill College
www.chu.cam.ac.uk
February 13, 2026 at 6:30 PM
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.
Dining rights, access to sports/music facilities, participation in academic & social life of College, some research expenses.
Reposted by Greg Jefferis
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...
Join us to lead a transformative initiative in human systems neuroscience.
Find out more and apply ⤵️
www.sainsburywellcome.org/content/curr...
February 13, 2026 at 1:41 PM
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...
Join us to lead a transformative initiative in human systems neuroscience.
Find out more and apply ⤵️
www.sainsburywellcome.org/content/curr...
Reposted by Greg Jefferis
🧠 We are pleased to announce that applications for the M2 Systems Neuroscience at the University Paris-Saclay are officially open 🎉
www.universite-paris-saclay.fr/formation/ma...
@univparissaclay.bsky.social @neuropsi.bsky.social
www.universite-paris-saclay.fr/formation/ma...
@univparissaclay.bsky.social @neuropsi.bsky.social
M2 Systems Neuroscience: from cells to brain functions
www.universite-paris-saclay.fr
February 10, 2026 at 9:00 AM
🧠 We are pleased to announce that applications for the M2 Systems Neuroscience at the University Paris-Saclay are officially open 🎉
www.universite-paris-saclay.fr/formation/ma...
@univparissaclay.bsky.social @neuropsi.bsky.social
www.universite-paris-saclay.fr/formation/ma...
@univparissaclay.bsky.social @neuropsi.bsky.social
Reposted by Greg Jefferis
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!
Send us nominations for the FKNE Mentoring Prize 2026!The award will be presented at FENS Forum 2026 in Barcelona to a scientist who has demontrated leadership in fostering the careers of neuroscientists. Deadline: 15 February 2026 2cm.es/1gh-m
February 4, 2026 at 8:46 AM
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!
Reposted by Greg Jefferis
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/...
onlinelibrary.wiley.com
January 6, 2026 at 7:47 AM
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/...
Reposted by Greg Jefferis
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
January 5, 2026 at 7:34 AM
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
Reposted by Greg Jefferis
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...
Mentoring
Profile raising
Leadership training
Network building
Spread the word...
www.biologists.com/grants/devel...
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...
www.biologists.com
December 3, 2025 at 6:56 AM
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...
Mentoring
Profile raising
Leadership training
Network building
Spread the word...
www.biologists.com/grants/devel...
Reposted by Greg Jefferis
🚨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...
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...
November 21, 2025 at 2:31 PM
🚨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...
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...
Reposted by Greg Jefferis
📢 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 page👇
sensesinmotion.org
#neuroskyence #neurosky
Deadline for abstracts: 19 December
Conference dates: 18–21 May 2026
Location: Harnack House, Berlin
Register via this page👇
sensesinmotion.org
#neuroskyence #neurosky
November 20, 2025 at 6:23 PM
📢 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 page👇
sensesinmotion.org
#neuroskyence #neurosky
Deadline for abstracts: 19 December
Conference dates: 18–21 May 2026
Location: Harnack House, Berlin
Register via this page👇
sensesinmotion.org
#neuroskyence #neurosky
Reposted by Greg Jefferis
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.
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.
November 18, 2025 at 2:29 PM
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.
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.
Reposted by Greg Jefferis
🌟 Ready to take the next step in your career?
Applications are open for the Cambridge Biosciences Doctoral Training Programme! 🔬
➡️ Fully funded opportunities: supported by the BBSRC
Learn more and apply now: bbsrcdtp.lifesci.cam.ac.uk/how-apply
#Postgraduate #Cambridge #PhD
Applications are open for the Cambridge Biosciences Doctoral Training Programme! 🔬
➡️ Fully funded opportunities: supported by the BBSRC
Learn more and apply now: bbsrcdtp.lifesci.cam.ac.uk/how-apply
#Postgraduate #Cambridge #PhD
November 11, 2025 at 5:19 PM
🌟 Ready to take the next step in your career?
Applications are open for the Cambridge Biosciences Doctoral Training Programme! 🔬
➡️ Fully funded opportunities: supported by the BBSRC
Learn more and apply now: bbsrcdtp.lifesci.cam.ac.uk/how-apply
#Postgraduate #Cambridge #PhD
Applications are open for the Cambridge Biosciences Doctoral Training Programme! 🔬
➡️ Fully funded opportunities: supported by the BBSRC
Learn more and apply now: bbsrcdtp.lifesci.cam.ac.uk/how-apply
#Postgraduate #Cambridge #PhD
Reposted by Greg Jefferis
Reposted by Greg Jefferis
Excited to return as co-director of the CSHL Drosophila 🪰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
🪰🧪
Application Deadline: March 27
meetings.cshl.edu/courses.aspx...
@cshlnews.bsky.social
@cshlaboratory.bsky.social
@cshlcourses.bsky.social
#cshlflycourse
#scicomm
#drosophila
🪰🧪
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.
meetings.cshl.edu
November 8, 2025 at 3:47 PM
Excited to return as co-director of the CSHL Drosophila 🪰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
🪰🧪
Application Deadline: March 27
meetings.cshl.edu/courses.aspx...
@cshlnews.bsky.social
@cshlaboratory.bsky.social
@cshlcourses.bsky.social
#cshlflycourse
#scicomm
#drosophila
🪰🧪
Reposted by Greg Jefferis
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...
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...
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...
www.cshl.edu
October 25, 2025 at 1:17 PM
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...
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...
Reposted by Greg Jefferis
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
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
Brandeis University, Biology Department
Job #AJO30961, Assistant Professor in Biology and Neuroscience Program, Biology Department, Brandeis University, Waltham, Massachusetts, US
academicjobsonline.org
October 22, 2025 at 11:28 PM
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
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
Reposted by Greg Jefferis
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
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
October 16, 2025 at 6:34 AM
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
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
Excited to share our new #biorxivpreprint:
“Sexual 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
“Sexual 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
October 15, 2025 at 4:17 PM
Excited to share our new #biorxivpreprint:
“Sexual 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
“Sexual 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
Reposted by Greg Jefferis
We are recruiting PhD students! If you are interested in evolutionary neuroscience, consider applying: www.crick.ac.uk/careers-stud...
Prieto Godino Lab | Cellular and molecular bases of neural circuit and behavioural evolution
www.crick.ac.uk
October 8, 2025 at 8:51 PM
We are recruiting PhD students! If you are interested in evolutionary neuroscience, consider applying: www.crick.ac.uk/careers-stud...
Reposted by Greg Jefferis
Some fly neurons are “dimorphic”, existing in both males and females but connecting to different neighboring neurons. Neighbors may be “isomorphic”, 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.
October 8, 2025 at 9:11 AM
Some fly neurons are “dimorphic”, existing in both males and females but connecting to different neighboring neurons. Neighbors may be “isomorphic”, 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.
Wow congratulations @jkohl.bsky.social! Proud scientific parent :)
The #HertieFoundation and #FENS are excited to announce the winner of the Eric Kandel Young Neuroscientists Prize 2025: Johannes Kohl!
He will be awarded EUR 100,000 and will deliver the Eric Kandel Prize Lecture at #FENS2026 in Barcelona! 🇪🇸
👉 https://loom.ly/xsDFNzo
He will be awarded EUR 100,000 and will deliver the Eric Kandel Prize Lecture at #FENS2026 in Barcelona! 🇪🇸
👉 https://loom.ly/xsDFNzo
October 6, 2025 at 9:50 PM
Wow congratulations @jkohl.bsky.social! Proud scientific parent :)
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.
October 6, 2025 at 2:59 PM
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.
Reposted by Greg Jefferis
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...
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...
Male CNS Connectome
A team of researchers has unveiled the complete connectome of a male fruit fly central nervous system —a seamless map of all the neurons in the brain and nerve cord of a single male fruit fly and the ...
www.janelia.org
October 5, 2025 at 6:02 PM
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...
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...
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....
Male CNS Connectome
A team of researchers has unveiled the complete connectome of a male fruit fly central nervous system —a seamless map of all the neurons in the brain and nerve cord of a single male fruit fly and the ...
www.janelia.org
October 5, 2025 at 3:40 PM
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....