Until recently, there were no experimental reports of superconductivity in graphene although its close relatives, graphite and fullerenes can be made superconducting by intentionally introducing electrons in the material (doping).
For the British literary movement, see Spasmodic poets. A spasm is a sudden involuntary contraction of a muscle, a group of muscles, or a hollow organ such as the heart. A spasmodic muscle contraction may be caused by many medical conditions, including dystonia. Most commonly, it is a muscle cramp which is accompanied by a sudden burst of pain.
Noun. 1. muscle contraction - (physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber). contraction, muscular contraction.shortening-act of decreasing in length; the dress needs shortening.raxton-Hicks contraction, false labor-painless contractions of the muscles of the uterus that continue throughout pregnancy with increasing frequency. vaginismus-muscular contraction that causes the vagina to close; usually an anxiety reaction before coitus or pelvic examination.