NMDA receptor. NMDA receptors (NMDAR), glutamate receptors are the predominant molecular device for synaptic plasticity and to control the memory function.
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire that create the magnetic field.
A magnet is an object that attracts or repels other objects within a magnetic field. Magnets can be permanent or temporary and vary in size, shape or in the strength of its magnetic field. Some magnets are more powerful than others. During olden times, people thought magnets were magical.