Kari Johnson
Kari Johnson
@karijohnson.bsky.social
Brain enthusiast. Posts are my own views/opinions. She/her
If you're at SfN, don't forget about the BRAIN Toolmakers Showcase tonight! This is always a fun opportunity to learn about new technologies and network.
Join us at #SfN25 tomorrow (11/16) at 7PM PT for the BRAIN Initiative Alliance Social: Toolmakers Showcase to celebrate innovation and collaboration in #neuroscience. Register: https://web.cvent.com/event/4a051497-a2f2-4385-8944-f1bff79dfb9f/register
November 16, 2025 at 7:53 PM
Reposted by Kari Johnson
Not long after I started my lab, a prominent scientist told me it was “impossible” to be a successful PI and a mother

Don’t ever let the naysayers tell you it can’t be done - of course it can!

#HappyMothersDay this weekend to all the amazing scientist mamas raising their wonderful kids 🥰
May 9, 2025 at 6:23 PM
Reposted by Kari Johnson
If I could just keep the stress exercising w/out the stress eating & drinking that would be really great….
May 5, 2025 at 12:42 PM
Reposted by Kari Johnson
My PhD project is out as a preprint!
We combined 2P and synchrotron X-ray to understand mouse olfactory bulb circuits, linking physiology to structure in 3 animals!
doi.org/10.1101/2025...
🙌 @carlesbosch.bsky.social, @apacureanu.bsky.social, @andreas-t-schaefer.bsky.social, @esrf.fr, @crick.ac.uk
May 1, 2025 at 12:20 PM
Reposted by Kari Johnson
#preprint:

We mapped the structure and function of olfactory bulb circuits with in vivo 2-photon microscopy and synchrotron #Xray holographic nanotomography.

doi.org/10.1101/2025...

@yuxinzhang.bsky.social @andreas-t-schaefer.bsky.social @apacureanu.bsky.social
@crick.ac.uk @esrf.fr
May 1, 2025 at 1:39 PM
Reposted by Kari Johnson
There is a version of this in every single interaction with another local in DC..."has your job been affected?" Acquaintances in any field. Neighbors. The people in line at the coffee shop.
My HAIRDRESSER asked me this.
April 26, 2025 at 10:45 PM
Reposted by Kari Johnson
Anyone with a web browser can use MICrONS Explorer to visualize segments of the 120,000 cells packed into the cubic millimeter of mouse cortex—a specimen roughly the size of a sharp pencil point.

By Katie Moisse

#neuroskyence

www.thetransmitter.org/connectome/i...
Inhibitory cells orchestrate neural activity in mouse brain
A cubic millimeter of brain tissue, sectioned, stained and scrutinized over seven years, reveals in detail the role of inhibitory interneurons.
www.thetransmitter.org
April 17, 2025 at 3:33 PM
Reposted by Kari Johnson
It's been done for a while, accepted almost a year ago, but I'm happy to share that my first analysis of the MICrONs cubic mm dataset is online! nature.com/articles/s41...
Inhibitory specificity from a connectomic census of mouse visual cortex - Nature
Using volumetric electron microscopy, the authors map and analyze the structure of cortical inhibition with synaptic resolution across a column of visual cortex.
nature.com
April 9, 2025 at 10:41 PM
Reposted by Kari Johnson
How does the brain work?

Scientists are closer to the answer with the largest wiring diagram and functional map of a mammalian brain to date. 🧵

🧠📈
April 9, 2025 at 3:03 PM
Reposted by Kari Johnson
I know there's a 𝒍𝒐𝒕 going on right now, but I couldn’t be prouder to share this long-incubated labor of love: the complete connectome of the male 𝐷𝑟𝑜𝑠𝑜𝑝ℎ𝑖𝑙𝑎 optic lobe 🧠🪰
🔗 www.nature.com/articles/s41...
Connectome-driven neural inventory of a complete visual system - Nature
A connectome of the right optic lobe from a male fruitfly is presented together with an extensive collection of genetic drivers matched to a comprehensive neuron-type catalogue.
www.nature.com
March 27, 2025 at 10:58 PM
Reposted by Kari Johnson
Advances in neuroscience have yielded massive, rich datasets from various analysis techniques and modalities. 🧠📈

In a @natureneuro.bsky.social perspective, researchers underscore the importance of an integrative approach to render a more complete picture of the brain.
Integrating multimodal data to understand cortical circuit architecture and function - Nature Neuroscience
This paper discusses how experimental and computational studies integrating multimodal data, such as RNA expression, connectivity and neural activity, are advancing our understanding of the architectu...
www.nature.com
March 25, 2025 at 6:59 PM
Reposted by Kari Johnson
Single-cell approaches are already shedding light on the human brain, identifying cell types that are vulnerable in the early stages of Alzheimer’s disease, for example, write Ed Lein and @hongkuizeng.bsky.social in The Transmitter's human neurotech series.

www.thetransmitter.org/human-neurot...
Single-cell genomics technologies and cell atlases have ushered in a new era of human neurobiology
Single-cell approaches are already shedding light on the human brain, identifying cell types that are most vulnerable in the early stages of Alzheimer’s disease, for example.
www.thetransmitter.org
March 24, 2025 at 1:12 PM
Reposted by Kari Johnson
We are excited to announce that nominations are open for our “Rising stars in neuroscience” 2025 report. We seek to feature early-career researchers who have made outstanding scientific contributions and demonstrated a commitment to community-building. Submit a nominee here:
bit.ly/4bsoBXD
The Transmitter’s ‘Rising stars in neuroscience’ 2025
Recognize early-career researchers who have made outstanding contributions to the field. Selected nominees will be featured on our website and in our annual book.
bit.ly
March 14, 2025 at 7:27 PM
Reposted by Kari Johnson
Over 10 years after its founding, the BRAIN Initiative program has led to incredible leaps in our understanding of the brain.

Look back at its biggest accomplishments: www.braininitiative.org/achievements...

#BrainAwarenessWeek #studyBRAIN #Neuroskyence
A look back on the BRAIN Initiative in 2024 (and what’s coming in 2025!) - The BRAIN Initiative Alliance
In a testament to the power of collaboration and innovation, 2024 was marked by numerous partnerships, events, developments, and accomplishments for The BRAIN Initiative®. We are reflecting on 10 year...
www.braininitiative.org
March 13, 2025 at 11:03 PM
Reposted by Kari Johnson
Here's my #FluorescenceFriday, an experiment I messed up 😁. I was attempting to identify neurons (cell body, nuclei) and glial cells (microglia, astrocytes), but I accidentally mixed up the antibodies for astrocytes and neuronal nuclei, resulting in both having the same color 🌕. A pretty mistake?
February 28, 2025 at 6:49 PM
A relevant perspective piece was recently published by my colleagues at NIH: Continuing trial responsibilities for implantable neural devices pubmed.ncbi.nlm.nih.gov/37582365/
September 21, 2023 at 3:44 PM