Two in one or better: record and stimulate with one unit. The ISIS Switchmatrix from inomed allows this. If flexibility is important, speed, a high priority and simplicity of is operation desired, this inomed development paves the way for extremely simple stimulation and recording within an invasive multi-channel recording. A basic system for diagnosis in neurology and psychiatry which enables intuitive and rapid work during an intracranial EEG or an invasive multi-channel recording: ISIS Switchmatrix.