Sign in

Michael Totty

@mictott.bsky.social
386 followers 736 following 131 posts

Postdoctoral neuroscientist at JHU working at the intersection of neural circuits, bioinformatics, and psychiatric disorders. mictott.github.io

PostsRepliesMedia
Reposted by Michael Totty
Robert Phillips @rphillips3.bsky.social · 27/09/2026
Very excited to share our newest preprint, led by myself and Biostats PhD Student Jianing Yao, where we generate a three dimensional reconstruction of the human NAc to understand how cell type heterogeneity and topography change across the anterior-posterior axis. www.biorxiv.org/content/10.6...
13812
Reposted by Michael Totty
Travis Goode @travisgoode.bsky.social · 01/09/2026
🧪🧪🧪 (1/5) Beyond thrilled to announce that I’ll be starting my own lab as a Tenure-Track Assistant Professor at the University of Tennessee Health Science Center (@uthsc.bsky.social) in Jan 2027! #NewPI My lab will study the neurobiology of learning, memory, and motivation! 🧠🐭⚡️🔬
8628
Reposted by Michael Totty
Keri Martinowich @martinowk.bsky.social · 28/08/2026
There are supp figures like these for all the blocks used - but, her ability to score and tile 6-8 pieces with minimal damage so the amygdala could be reconstructed is just 🙌
0114
Reposted by Michael Totty
Vinny Costa @vincentcostaphd.bsky.social · 28/08/2026
Like I have mentioned before spatial neurobiology is very hard. @svitlanabach.bsky.social makes the impossible seem routine.
093
Reposted by Michael Totty
Keri Martinowich @martinowk.bsky.social · 27/08/2026
I am very excited to see this work out and so proud of @mictott.bsky.social & @svitlanabach.bsky.social! Study is a great example of moving beyond generating spatial transcriptomics data simply to generate molecular maps, to using the data to answer longstanding questions about human 🧠 organization.
3229
Michael Totty @mictott.bsky.social · 27/08/2026
Incredibly proud to share our newest work where we developed a multiscale spatial transcriptomic atlas of the human amygdala using three complementary technologies! 1/12 🧵 www.biorxiv.org/content/10.6...
biorxiv.org
Multiscale spatial transcriptomics resolves the cellular and molecular architecture of the human amygdala
The amygdala is a central hub for emotional learning that is dysregulated across numerous psychiatric disorders, yet its molecular architecture in humans remains poorly defined. We here present a spat...
35225
Michael Totty @mictott.bsky.social · 21/08/2026
Fine mapping of PTSD GWAS reveals a role for amygdala Foxp2 in regulation of fear and threat responses www.biorxiv.org/content/10.6...
biorxiv.org
Fine mapping of PTSD GWAS reveals a role for amygdala Foxp2 in regulation of fear and threat responses
Post-traumatic Stress Disorder (PTSD) is a debilitating psychiatric condition caused by severe trauma exposure and characterized by ongoing dysregulation of fear processing, hyperarousal, and amygdala...
053
Michael Totty @mictott.bsky.social · 20/08/2026
Cell-type-specific APOE4 cascade across the Alzheimer’s disease continuum www.cell.com/neuron/fullt...
cell.com
Cell-type-specific APOE4 cascade across the Alzheimer’s disease continuum
Shostak et al. propose a cell-type-specific APOE4 cascade across the Alzheimer’s disease continuum, where neuronal APOE4 upregulation during aging initiates damage and triggers glial responses that, a...
051
Michael Totty @mictott.bsky.social · 03/08/2026
It took 14 months, but I’m incredibly excited to share that my NIMH Pathway to Independence Award (K99/R00) has officially been funded!
8942
Reposted by Michael Totty
Robin Magnard @robinmagnard.bsky.social · 30/07/2026
🧠🧬 What are the effects of intravenous fentanyl self-administration on the habenula and amygdala transcriptomes? In our new Addiction Biology paper, we addressed this question using a chronic long-access model in rats! Here are some highlights 🧵👇 Paper 👉 dx.doi.org/10.1111/adb....
dx.doi.org
Transcriptional Response to Chronic Long‐Access Fentanyl Self‐Administration in Rat Habenula and Amygdala
Chronic intravenous long-access fentanyl self-administration in rats produced transcriptional remodeling in the habenula and amygdala. Bulk RNA-sequencing identified 453 habenula and 3,041 amygdala d...
2187
Reposted by Michael Totty
Jeremy Day @daylab.bsky.social · 30/07/2026
Very excited about this new preprint from @odrake.bsky.social, an incredibly talented MD/PhD student in the lab. 🧵 below, but the TL;DR: we found a rare striatal neuron subtype with unique transcriptional, spatial, and circuit properties that gates opioid reward.
3278
Reposted by Michael Totty
Talia Lerner @talialerner.bsky.social · 30/07/2026
Nice work! Congrats!
011
Reposted by Michael Totty
Kaessmann Lab @kaessmannlab.bsky.social · 16/10/2025
Did transposable elements shape brain evolution — and if so, which ones, and in which cell states and lineages? Led by @tyamadat.bsky.social, we explored this question in cerebellum development using sequence-based deep learning models! www.biorxiv.org/content/10.1...
58135
Reposted by Michael Totty
FMI science @fmiscience.bsky.social · 30/07/2026
Today in @natneuro.nature.com, researchers led by @felsenberg.bsky.social report that memories can persist as silent traces, recoverable with the right reminder. But misleading cues can distort recall and create false memories—showing how remembering can rewrite the past. www.fmi.ch/news-events/...
fmi.ch
Forgotten memories can leave silent traces in the brain
A forgotten memory is not always a vanished one. FMI neuroscientists investigating the fruit fly brain found that some memories become inaccessible while leaving a silent trace behind. The right remin...
13611
Michael Totty @mictott.bsky.social · 30/07/2026
Full-length single-cell spatial transcriptomics reveals spatial and cell-type-specific transcript isoforms in the primate brain www.nature.com/articles/s41...
nature.com
Full-length single-cell spatial transcriptomics reveals spatial and cell-type-specific transcript isoforms in the primate brain - Nature Methods
Fullscope-seq combines a spatial transcriptomics approach (Stereo-seq) with long-read sequencing. The approach provides isoform information at single-cell resolution across a large field of view, as d...
063
Michael Totty @mictott.bsky.social · 30/07/2026
Light-activated tetanus neurotoxin for conditional proteolysis and inducible synaptic inhibition in vivo www.nature.com/articles/s41...
nature.com
Light-activated tetanus neurotoxin for conditional proteolysis and inducible synaptic inhibition in vivo - Nature Methods
LATeNT is a light-activatable form of tetanus neurotoxin that can be used for spatiotemporally precise inhibition of exocytosis in neurons and other cells. It can inhibit synaptic transmission in vivo...
000
Michael Totty @mictott.bsky.social · 30/07/2026
Spike inference from calcium imaging data acquired with GCaMP8 indicators www.nature.com/articles/s41...
nature.com
Spike inference from calcium imaging data acquired with GCaMP8 indicators - Nature Methods
In this Analysis, Rupprecht et al. investigate the behavior of GCaMP8 variants in spike inference using several different algorithms. They highlight the role of the indicators’ linearity in the infere...
000
Reposted by Michael Totty
Jeremy Day @daylab.bsky.social · 29/07/2026
Congratulations to the 2026 @acnporg.bsky.social travel award recipients! Good to see a lot of familiar names on this list, including @mictott.bsky.social, @jtuscher.bsky.social, @kmcostalab.com, @laurenmac.bsky.social, @chanjenerational.bsky.social, and @outraajeous.bsky.social!
2297
Michael Totty @mictott.bsky.social · 28/07/2026
Incredibly honored to have been selected for an ACNP Travel Award this year! I can’t wait to share some of the new projects we’ve been working on. See y’all in January! @acnporg.bsky.social
2131
Michael Totty @mictott.bsky.social · 13/07/2026
The thalamic nucleus reuniens orchestrates prefrontal-hippocampal synchrony in memory, emotion, and disease www.frontiersin.org/journals/beh...
frontiersin.org
Frontiers | The thalamic nucleus reuniens orchestrates prefrontal-hippocampal synchrony in memory, emotion, and disease
Decades of literature point to a critical role for prefrontal-hippocampal interactions in emotion and memory. Recent studies in both rodents and humans have ...
020
Michael Totty @mictott.bsky.social · 08/07/2026
Dual thalamic drive defines the intra-amygdala wiring complexity biorxiv.org/content/10.6...
000
Reposted by Michael Totty
Prashanthi Ravichandran @prashanthi-ravi.bsky.social · 02/07/2026
(1/10) We’re excited to share our recently published study www.sciencedirect.com/science/arti... which uncovers the spatiomolecular landscape of the human NAc, a key reward structure by integrating snRNA-seq with Visium spatial transcriptomics. 🧠 #NAcLIBD #snRNAseq #10xVisium
sciencedirect.com
Spatiomolecular mapping reveals anatomical organization of heterogeneous cell types in the human nucleus accumbens
The nucleus accumbens (NAc) is a key component of the mesolimbic dopamine system that is implicated in several neuropsychiatric disorders. The NAc con…
10227
Michael Totty @mictott.bsky.social · 27/06/2026
Probably one of the best pictures I’ll ever take here at Baltimore’s Sail 250 air show.
1234
Michael Totty @mictott.bsky.social · 27/06/2026
Perks of playing at the Baltimore City muni courses.
010
Reposted by Michael Totty
Caswell Barry @caswell.bsky.social · 23/06/2026
Really excited about this work with the awesome Will de Cothi & @shipleysj.bsky.social, out in Nature Reviews Neuroscience. We propose acetylcholine is an analogue of dopamine — tracking not reward prediction errors but state-transition prediction errors. doi.org/10.1038/s41583-026-01058-w
25425
Reposted by Michael Totty
Keri Martinowich @martinowk.bsky.social · 22/06/2026
I am very excited to continue working with @mictott.bsky.social thinking about translational potential of directly targeting this cell population, which continually remind us in dataset after dataset of their unique vulnerability across a number of neuropsych and neurodegenerative disorders!
011
Reposted by Michael Totty
Keri Martinowich @martinowk.bsky.social · 22/06/2026
Really nice thread from @mictott.bsky.social about the origin of the studies and the interpretation of the findings here when the preprint was posted: bsky.app/profile/mict...
111
Reposted by Michael Totty
Keri Martinowich @martinowk.bsky.social · 22/06/2026
Excited to see this paper in press! I am so excited for/ proud of @aaronsalisbury.bsky.social + @mictott.bsky.social who led this project, which arose from experiments in Michael's NIMH funded F32 award, and became the basis of Aaron's PhD thesis work. www.sciencedirect.com/science/arti...
1215
Reposted by Michael Totty
Nicole Rust @nicolecrust.bsky.social · 17/06/2026
I now have multifold confirmation: mouse studies at Janelia will wind down to be replaced by studies of fish. Wow.
5217
Michael Totty @mictott.bsky.social · 05/06/2026
Even with all the new imaging tech we have, nothing beats the old school neuroanatomy drawings. I particularly love the level of detail shown here of the various nuclei and cell types found in the human amygdala. Studies of the Vertebrate Telencephalon II. Crosby and Humphrey, 1941.
1101
Michael Totty @mictott.bsky.social · 11/05/2026
19 on my K99 resubmission! Massive thanks to my mentors and letter writers for all their support. Hard to tell if it will actually translate to funding in this climate, but I'll take the win regardless!
6422
Reposted by Michael Totty
Keri Martinowich @martinowk.bsky.social · 08/05/2026
This big fat Von Economo neuron in the dorsal anterior cingulate cortex of the human 🧠 is here to celebrate #FluorescenceFriday with a paper acceptance in their honor 🔬👩‍🔬🧪. Congrats to @kinnaryshah.bsky.social @mictott.bsky.social @svitlanabach.bsky.social and the whole team 😀
Fluorescence microscopy image showing individual channels (red, yellow and magenta) labeling mRNA transcripts (SULF2, POU3F1, GABRQ) as well as a merge image from a section of human brain tissue
3679
Reposted by Michael Totty
Nicole Rust @nicolecrust.bsky.social · 07/05/2026
Exciting! www.cell.com/neuron/fullt...
cell.com
Inventing the future: A neuroscience research roadmap
The past decade of transformative advances in neurotechnology portends an exciting future for neuroscience. This NeuroView charts a strategic path to accelerate and integrate research discovery and sp...
181
Michael Totty @mictott.bsky.social · 09/04/2026
Pain.
020
Reposted by Michael Totty
Ben Saunders @bensaunders.bsky.social · 09/03/2026
Check out our latest research drop! We show BLA dopamine signaling encodes the emotional weight of sensory transitions, but not the associative strength or value of stimuli. These signals dynamically rescale when the learning context changes: "this matters most!" www.biorxiv.org/content/10.1...
biorxiv.org
36425
Reposted by Michael Totty
Pam Herd @pamherd.bsky.social · 06/03/2026
On a scale of 1 (Whatever) to 5 (I’m dying) rate your anxiety level.
Picture of a computer perched perilously on the edge of an armchair
38341
Reposted by Michael Totty
Jeremy Day @daylab.bsky.social · 03/03/2026
UAB is recruiting neuroscience faculty at two different levels - come join our vibrant neuroscience community!
14540
Reposted by Michael Totty
Josh Johansen @jojolab.bsky.social · 03/03/2026
Excited to share our new paper: We uncover a locus coeruleus→amygdala circuit linking β-adrenergic signaling to transcription regulation in defined amygdala cells during memory reconsolidation—+ stress or elevated noradrenergic signaling at recall can strengthen memory. www.cell.com/neuron/abstr...
cell.com
A neuromodulatory circuit-to-molecular pathway for reformatting aversive memories during recall
Tan et al. identify a neuromodulatory circuit-to-molecular pathway in rats that updates aversive memories when they are recalled. Noradrenaline from the locus coeruleus triggers synapse-to-nuclear tra...
38236
Reposted by Michael Totty
Keri Martinowich @martinowk.bsky.social · 18/02/2026
Very excited to get to share culmination of this large-scale project to understand spatial gene expression in schizophrenia. Really proud of the amazing team work here working out lots of roadblocks to deploy these spatial strategies and analysis methods at scale!
13913
Reposted by Michael Totty
Travis Goode @travisgoode.bsky.social · 12/02/2026
Restaurants, billboards, commercials… what brain circuits link context to appetite? 🧠🌎🍽️ Very happy to finally share a major update in our work exploring the hippocampus and lateral septum in calibrating food consumption! 🍩 Major thanks to our lab and collaborators! ⭐️⭐️ www.cell.com/neuron/fullt...
cell.com
A dorsal hippocampus-prodynorphinergic dorsolateral septum-to-lateral hypothalamus circuit mediates contextual gating of feeding
Goode et al. show that prodynorphin (Pdyn)-expressing neurons of the dorsolateral septum (DLS) receive substantial dorsal hippocampal (DHPC) input and inhibit lateral hypothalamic (LHA) GABAergic neur...
2179
Michael Totty @mictott.bsky.social · 12/02/2026
Major congratulations to @travisgoode.bsky.social and team on this!! This work was years in the making and is an absolute tour de force uncovering the neural circuitry of context-dependent feeding.
161
Reposted by Michael Totty
Amar Sahay @amarsahay.bsky.social · 12/02/2026
Excited to share our study in Neuron led by @travisgoode.bsky.social, a K99 PDF (interviewing for Faculty) and Sahay lab team with collaborators at BROAD, Hopkins, and UW Seattle, defining a neural circuit that links prior experience with feeding behavior. Open Access: sahaylab.com/publications
63820
Reposted by Michael Totty
Keri Martinowich @martinowk.bsky.social · 02/02/2026
Congrats to @aaronsalisbury.bsky.social and @mictott.bsky.social on this exciting project initially designed to mechanistically investigate a molecular association with PTSD that we observed in postmortem human brain tissue. Fun🧵below explaining the scientific rational and findings from Michael!
0226
Michael Totty @mictott.bsky.social · 02/02/2026
New paper out on cortistatin neurons and their role in regulating fear and cortical hyperexcitability in the prelimbic cortex! This one has been a fun ride 🧵 www.biorxiv.org/content/10.6...
biorxiv.org
4226
Reposted by Michael Totty
Keri Martinowich @martinowk.bsky.social · 29/01/2026
Now online! @lieberinstitute.bsky.social & @jhubiostat.bsky.social collaboration generating important resource (Visium & Xenium) on molecular organization of human hypothalamus w/ cool findings associating sex differential expression to neuropsychiatric disorders 🧠🔬🧪 www.cell.com/cell-reports...
cell.com
Spatially resolved molecular sex differences at single-cell resolution in the adult human ventromedial and arcuate hypothalamus
The ventromedial hypothalamus (VMH) and arcuate (ARC) nuclei of the hypothalamus play critical roles in regulating metabolism and behavior. Here, Mulvey et al. create a focused spatial transcriptomic ...
13311
Reposted by Michael Totty
Ozge Gunduz-Cinar @ozgegunduzcinar.bsky.social · 05/12/2025
1/4 New Paper 🧠🐭 #Neuroscience #Dopamine #FearExtinction #eNeuro Altered Dopamine Signaling in Extinction-Deficient Mice www.eneuro.org/content/12/1...
eneuro.org
Altered Dopamine Signaling in Extinction-Deficient Mice
A central mechanism of exposure-based cognitive behavioral therapy for anxiety and trauma-related disorders is fear extinction. However, the mechanisms underlying fear extinction are deficient in some...
1175
Reposted by Michael Totty
Tim Behrens @behrenstimb.bsky.social · 25/11/2025
So functional cell types certainly exist in the spatial system. There is no doubt about this. However, this paper shows that you cannot know that you have found them by just decoding space, or even by showing spatial selectivity! This is a very important thing to tell the field.
2141
Reposted by Michael Totty
Bradley Love @profdata.bsky.social · 25/11/2025
"The inevitability and superfluousness of cell types in spatial cognition". Intuitive cell types are found in random artificial networks using the same selection criteria neuroscientists use with actual data. elifesciences.org/reviewed-pre... 1/2
elifesciences.org
44515
Reposted by Michael Totty
Drug Monkey @drugmonkey.bsky.social · 26/11/2025
A great intro to academic conferencing. Not sure how I missed this one. scienceforeveryone.science/getting-the-...
scienceforeveryone.science
Getting the most of out a scientific conference
A slightly unconventional guide to your first time
26226
Reposted by Michael Totty
Lukas Weber @lmweber.bsky.social · 22/11/2025
We are excited to share our online book and preprint on “Orchestrating Spatial Transcriptomics Analysis with Bioconductor”!
11912