Electromyography (EMG) is used to record electrical activity in a muscle. Thin needle electrodes are inserted directly into the patient's muscle. The activity of individual muscle fibres can thereby be determined. This examination method can, for example, determine whether muscle weakness is due to the muscle itself being diseased or whether the flow of information from the nerve to the muscle is disrupted. An EMG can also indicate the likelihood of recovery when muscles have become paralysed due to nerve damage or nerve inflammation. Nerve damage can also be localised by means of an EMG. This model is one of the design options for this device.