Related topics: brain · nerve cells · brain cells · cells · stem cells

A timekeeper for siesta

Circadian clocks must be flexible and they must be able to adapt to varying environmental conditions. Otherwise, it would be impossible for living beings to change their patterns of activity when the days get shorter again ...

The sleep neuron in threadworms is also a stop neuron

Wagner Steuer Costa in the team of Alexander Gottschalk, Professor for Molecular Cell Biology and Neurobiochemistry, discovered the sleep neuron RIS a few years ago by coincidence—simultaneously with other groups. To understand ...

Seeing memories being made

Researchers at Technische Universität Kaiserslautern have developed a novel tool for tracking and manipulating long-term memories as they are stored in the brains of fruit flies. The tool, reported recently in the journal ...

The role of GABA neurons in the central circadian clock

The research team led by Dr. Daisuke Ono and Prof. Akihiro Yamanaka of the Graduate School of Medicine, Nagoya University, along with collaborators, has revealed that inhibitory neurons (GABAergic neurons) of the central ...

Finding a gene that regulates sleep

What keeps us awake—and helps us fall asleep? The answer is complex, but involves what are called circadian rhythms, which are found in all species with sleep-wake cycles—physical, mental, and behavioral changes that ...

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Neuron

A neuron (pronounced /ˈnjʊərɒn/ N(Y)OOR-on, also known as a neurone or nerve cell) is an excitable cell in the nervous system that processes and transmits information by electrochemical signalling. Neurons are the core components of the brain, the vertebrate spinal cord, the invertebrate ventral nerve cord, and the peripheral nerves. A number of specialized types of neurons exist: sensory neurons respond to touch, sound, light and numerous other stimuli affecting cells of the sensory organs that then send signals to the spinal cord and brain. Motor neurons receive signals from the brain and spinal cord and cause muscle contractions and affect glands. Interneurons connect neurons to other neurons within the same region of the brain or spinal cord. Neurons respond to stimuli, and communicate the presence of stimuli to the central nervous system, which processes that information and sends responses to other parts of the body for action. Neurons do not go through mitosis, and usually cannot be replaced after being destroyed, although astrocytes have been observed to turn into neurons as they are sometimes pluripotent.

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