Excitatory signaling

Recent articles

Detailed image of neurons in the mouse visual cortex.

Inhibitory cells work in concert to orchestrate neuronal activity in mouse brain

A cubic millimeter of brain tissue, meticulously sectioned, stained and scrutinized over the past seven years, reveals in stunning detail the role of inhibitory interneurons in brain structure and function.

By Katie Moisse
9 April 2025 | 6 min read
Research image of a fiber optic implant in a mouse brain.

Bespoke photometry system captures variety of dopamine signals in mice

The tool tracks the excitation of an engineered protein that senses dopamine’s absolute levels, including fast and slow fluctuations in real time, and offers new insights into how the signals change across the brain.

By Sydney Wyatt
21 March 2025 | 5 min read
High-resolution image of interconnected brain cells highlighted in magenta and blue.

What are recurrent networks doing in the brain?

The cortex is filled with excitatory local synapses, but we know little about their role in brain function. New experimental tools, along with ideas from artificial intelligence, are poised to change that.

By Mark Histed
16 December 2024 | 5 min read
Research image of mouse brain slices.

Newfound gene network controls long-range connections between emotional, cognitive brain areas

The finding could help unravel gene regulatory networks and explain how genetic and environmental factors interact in neurodevelopmental conditions.

By Charles Q. Choi
14 November 2024 | 4 min read
Research image of different interneuron subtypes responding to the absence of pyramidal neurons in the mouse cortex.

As circuits wire up, interneurons take cues from surrounding cells

The inhibitory cells’ development, diversity and abundance in the cortex is directed in part by pyramidal cells, a new preprint suggests.

By Olivia Gieger
14 August 2024 | 5 min read
Research image of fetal macaque brains.

Brain patterning in utero may be implicated in autism, other conditions

Genes tied to several conditions are expressed in regions that control neural stem cell fate within the first few months post-conception.

By Chloe Williams
1 August 2024 | 6 min read
Research image of a chimeroid.

Brain ‘chimeroids’ reveal person-to-person differences rooted in genetics

These fusions created from multiple donors’ organoids may help scale up comparative brain research.

By Charles Q. Choi
5 July 2024 | 4 min read
Research image of excitatory synapses in the prefrontal cortex.

Synaptic anomalies in autistic people support imbalance hypothesis

Increased excitatory and decreased inhibitory synapses in the prefrontal cortex of autistic people suggest broader impacts on brain function and connectivity.

By Giorgia Guglielmi
27 June 2024 | 4 min read
Research image of enteric neurons in zebrafish.

Opioid receptors may guide formation of gut nervous system in zebrafish

Fish lacking functional copies of the receptors have fewer enteric neurons than usual, but the findings await further validation.

By Olivia Gieger
26 June 2024 | 4 min read
Research image of antisense oligonucleotides.

RNA drug corrects calcium signaling in chimeric model of Timothy syndrome

The drug, tested in rats that have human neurons, could enter clinical testing as early as next year, researchers say.

By Katie Moisse
24 April 2024 | 5 min read

Explore more from The Transmitter

People help each other climb up a supersized human brain.

As federal funders desert mentorship programs for marginalized students, trainee-led initiatives fill the gap

Grassroots organizations, led by graduate students and postdoctoral researchers, are stepping up to provide neuroscience career training and guidance for students from marginalized backgrounds—and they need your support.

By Christian Cazares, Maribel Patiño
11 April 2025 | 5 min read
Research image of two mouse brain slices.

Split gene therapy delivers promise in mice modeling Dravet syndrome

The new approach overcomes viral packaging limitations by delivering SCN1A piecemeal and stitching it together in target cells.

By Holly Barker
10 April 2025 | 5 min read
Screenshot of NeMO website with banner reading This repository is under review for potential modification in compliance with Administration directives.

U.S. human data repositories ‘under review’ for gender identity descriptors

Researchers associated with the repositories received an email from the U.S. National Institutes of Health in March noting that they must comply with a 20 January executive order from President Trump that recognizes only two sexes: male and female.

By Angie Voyles Askham
9 April 2025 | 4 min read