Brain

A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body. In a human, the cerebral cortex contains approximately 14–16 billion neurons, and the estimated number of neurons in the cerebellum is 55–70 billion. Each neuron is connected by synapses to several thousand other neurons. These neurons typically communicate with one another by means of long fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells. Physiologically, brains exert centralized control over a body's other organs. They act on the rest of the body both by generating patterns of muscle activity and by driving the secretion of chemicals called hormones.

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Scientists develop new device to detect brain tumors using urine

Blobs of human brain planted in rats offer new treatment hope

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Repurposed drug battles ‘brain-eating’ amoeba

For the First Time: Human Brain Organoids Implanted in Mice Show Response to Visual Stimuli

Study Finds That Playing the Piano Boosts Brain Processing Power and Reduces Depression, Stress, and Anxiety

Pioneering NHS trial targets brain tumours before surgery

Human brain organoids respond to visual stimuli when transplanted into adult rats

Human neurons implanted into a rat's brain respond to flashing lights

Scientist Accidentally Discovers The Oldest Brain of Any Vertebrate

Researchers Have Uncovered New Functions of the “Ancient Brain”

Researcher takes another step toward discovering how a brain molecule could halt MS

Brain injuries drop 20% for babies with heart defects

319-million-year-old fish preserves the earliest fossilized brain of a backboned animal

High-Fat Diets May Break The Brain's Ability to Regulate Calories

New Research Shows How Ketamine Acts As “Switch” in the Brain

Three or more concussions linked with worse brain function in later life

A neuro-chip to manage brain disorders

Building a New Type of Efficient Artificial Intelligence Inspired by the Brain

Scientists discover a new protective layer in the brain