In a serendipitous discovery, UC San Diego researchers using cryo-EM technology captured the first visualizations of the 3-D structure of the muscle acetylcholine receptor in fetal and adult muscles.

Scientists have long studied the role of dopamine, a chemical in the brain that helps control learning and movement, in order ...

How does dopamine control both movement and learning? New research reveals that acetylcholine acts as a "switch" for dopamine ...

New treatments for nicotine addiction and certain muscular diseases may soon take a step forward, thanks in part to research on a tiny, bacteria-eating worm found in soil around the world. New ...

The connections between the nervous system and muscles develop differently across the kingdom of life. It takes newborn humans roughly a year to develop the proper muscular systems that support the ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen environmental ...

WE have recently carried out some experiments on the form of the contraction given by the gastrocnemius muscle of a winter frog 1 in response to a single electrical stimulus. In certain circumstances, ...

Acetylcholine is a chemical messenger, or neurotransmitter, that plays an important role in brain and muscle function. Imbalances in acetylcholine are linked with chronic conditions, such as Alzheimer ...

A MUSCLE can be made to contract by different stimuli. Thus, it may contract when pricked, when an electric current is passed through it, or if soaked in certain chemical substances. Among these, ...

A concentric contraction is a type of muscle activation that causes tension on your muscle as it shortens. As your muscle shortens, it generates enough force to move an object. This is the most ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.