Hyperactivity

Recent articles

Illustration of ketamine blocking open ion channels in active NMDA receptors, quieting the cells and disrupting downstream signaling involved in depression.

Ketamine targets lateral habenula, setting off cascade of antidepressant effects

The drug’s affinity for overactive cells in the “anti-reward” region may help explain its rapid and long-lasting results.

By Olivia Gieger
4 September 2024 | 6 min read
A young boy sits alone on a bench in a playground.

Mental health issues emerge with shifts in autism traits across childhood

Anxiety and other challenges autistic children experience may stem from an increase in social-communication issues and a decrease in repetitive behaviors from ages 6 to 11.

By Charles Q. Choi
27 September 2023 | 3 min read
Research image comparing microglia with serotonin receptors to those without.

Serotonin powers pruning of developing brain circuits in mice

Mice with microglia missing receptors for the neurotransmitter serotonin since birth have too many synapses and show social difficulties in adulthood.

By Katie Moisse
28 June 2023 | 5 min listen
Research image of zebrafish forebrains.

Autism-related genes converge on microglia and dopamine in zebrafish

The findings add to the growing evidence that genes with disparate functions can play similar roles in brain development.

By Peter Hess
12 May 2023 | 4 min read
Research image shows elevated expression of certain genes, shown in pink and green, along with expected gene expression, shown in blue.

Autism-linked MYT1L mutations prompt ‘identity crisis’ in budding brain cells

Both human and mouse progenitor cells with the alterations struggle to become neurons and instead express genes that are typically active only in muscle or the heart.

By Laura Dattaro
14 February 2023 | 5 min read
Mouse neurons in red and pink on black.

Mouse model reveals root of breathing issues in rare form of autism

Dysfunctional circuits and a rogue sodium channel in the brainstem may explain the disordered breathing pattern seen in children with Pitt-Hopkins syndrome, a form of autism.

By Anna Goshua
5 November 2021 | 4 min read
Two colorful mouse neurons seen side by side on black, one has a mutation.

Precocious neurons may stunt brain growth in rare form of autism

The first animal model of MYT1L syndrome suggests that fast-maturing neurons lead to the unusually small brains, social deficits and other traits seen in people with the condition.

By Peter Hess
5 October 2021 | 5 min read

Stimulant restores cell signaling, eases behavior issues in animals missing autism gene

Worms and zebrafish missing both copies of the gene CHD7 have disrupted cellular signaling, a dearth of inhibitory neurons and behavior changes — all of which are reversed by the stimulant drug ephedrine.

By Peter Hess
28 May 2021 | 4 min read
Neurons in a macaque cortex express parvalbumin in red.

Virus-based method manipulates inhibitory neurons in brains

A new viral tool can selectively control different types of neurons that dampen brain activity in rodents, monkeys and people.

By Jonathan Moens
9 September 2020 | 4 min read
Young boy biting his fingernails, looking anxiously out the window.

Long-term study tracks persistence of self-harm in autistic people

Autistic people who are hyperactive or have difficulty controlling their own impulses are the most likely to show ongoing self-injury.

By Chloe Williams
21 February 2020 | 4 min read

Explore more from The Transmitter

Illustration of a series of floating pools of water overflowing into each other.

The missing half of the neurodynamical systems theory

Bifurcations—an underexplored concept in neuroscience—can help explain how small differences in neural circuits give rise to entirely novel functions.

By Xiao-Jing Wang
27 October 2025 | 8 min read
Ed Kravitz sits at a lab bench with a microscope.

Remembering GABA pioneer Edward Kravitz

The biochemist, who died last month at age 92, was part of the first neurobiology department in the world and showed that gamma-aminobutyric acid is inhibitory.

By Claudia López Lloreda
24 October 2025 | 9 min listen
Research image of human neurons transplanted into mouse cortices.

Protein tug-of-war controls pace of synaptic development, sets human brains apart

Human-specific duplicates of SRGAP2 prolong cortical development by manipulating SYNGAP, an autism-linked protein that slows synaptic growth.

By Holly Barker
23 October 2025 | 9 min listen

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