'Micromar' electrocorticography set by Micromar Ind. Com. Ltd., Brazil, 1991-2000. Consists of a frame with an array of electrodes used to measure electrical impulses in the brain during surgery.

This frame consisting of a series of electrodes is known as an electrocorticography set. This is a type of test used to stimulate and record the electrical signals of areas of the brain by placing the electrodes directly on to its exposed surface. Areas of the brain can then be mapped using this set. One of the main uses of this technique is in the treatment of severe epilepsy.

The set was made by Micromar Ind Com. Ltd, who also donated the object to the Science Museum’s collections.