Systems, methods and computer-readable media are provided to enable early diagnosis of a wide variety of potentially lethal or catastrophic medical conditions using improved diagnostic analysis of non-stationary, non-linear biological signals. The analysis techniques includes accessing a biological signal in the memory determining a region of a recording to be displayed for the accessed biological signal obtaining a signal of a morphologic characteristic and a signal of a spectral frequency characteristic included in the accessed biological signal displaying for the determined region of the recording, spatially-separated and synchronized in time with each other, a first visually-compressed view including the signal of the morphologic characteristic and a second visually-compressed view including the signal of the spectral frequency characteristic and, upon receiving an input from a user, changing a degree of visual compression of the displayed first visually-compressed view and displayed second visually-compressed view.
