Medical research

Researchers find how stress and the circadian clock affect sleep

A Nagoya University-led research team in Japan has found a new neural pathway that links the circadian clock, stress, and wakefulness in mammals. The team identified a neuron, called the corticotropin-releasing factor (CRF) ...

Neuroscience

Settling the debate on serotonin's role in sleep

Serotonin is a multipurpose molecule found throughout the brain, playing a role in memory, cognition, and feelings of happiness and other emotions. In particular, researchers have long debated serotonin's role in sleep: Does ...

Neuroscience

VIP neurons shift daily rhythms

Neurons in the brain's master clock that adjust their activity in response to light have a key role in the resetting of an animal's daily cycle, finds a study of male and female mice published in JNeurosci. These cells may ...

Medical research

The brain's internal clock continually takes its temperature

Circuits in the brain act as an internal clock to tell us it is time to sleep and to control how long we then stay asleep. A new study in flies suggests a part of that clock constantly monitors changes in external temperature ...

Neuroscience

Astrocytes found to keep time for brain, behavior

Until recently, work on biological clocks that dictate daily fluctuations in most body functions, including core body temperature and alertness, focused on neurons, those electrically excitable cells that are the divas of ...

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