When unexpected events occur, norepinephrine signals mouse brains to pay attention to key details.

Like in humans, the neurotransmitter appears to play a role in generating wanting-like behavior and, perhaps, happy memories in honeybees.

Scientists show that an influx of noradrenaline can halt immune cells in mice.

Neural connections in the mouse neocortex can release multiple packages of neurotransmitters per electrical impulse, a study finds.

Synapses in the mouse neocortex can release multiple packages of neurotransmitters, suggesting that connection strength is more flexible than previously thought.

In a first-of-its-kind study, researchers monitored subsecond changes in levels of the neurotransmitters in the human brain, unlocking new insight into their function.

Clues about the biological mechanisms that contribute to a person’s chance of contemplating or attempting suicide

The biochemical mechanisms in the brain underlying suicidal behavior are beginning to come to light, and researchers hope they could one day lead to better treatment and prevention strategies.

Inhibiting nerve cells that produce the neurotransmitter made it harder for baby mice to recover from bouts of slowed breathing.

Male rodents exposed to nicotine had changes in sperm genome methylation and produced pups and grandpups with abnormal behavior.

Researchers have identified what makes synapses strong or weak in fruit flies.

Host slugs given Prozac to increase their serotonin levels no longer avoid parasitic nematodes, the same behavior seen in infected slugs.

Researchers unveil the neural basis of alertness in larval zebrafish.   

The Dartmouth College professor uses optogenetics to probe the neurological routes of habitual behavior.

One-third of babies who died of SIDS had higher-than-normal levels of the neurotransmitter in their blood serum, according to a study. 

Impairments in the production of neurotransmitters may lead to depression in some patients, preliminary results show, opening new avenues for research.

Results from experiments in mice revise a long-held hypothesis that certain protein scaffolds are needed for synaptic activity.

A study in roundworms hints at how the drug may exert therapeutic effects.

A web of cell types in one of the brain’s chief wake centers keeps animals up—but also puts them to sleep.