Amodal (meaning “without” modality) perception is perception of information that is common or redundant across multiple senses (e.g., auditory, visual, tactile). Amodal information includes changes along three basic parameters of stimulation—time, space, and intensity. Properties of objects and events such as temporal synchrony, rhythm, tempo, duration, intensity, and co-location are common across auditory, visual, and proprioceptive stimulation. Properties [Page 45]such as shape, substance, and texture are common across visual and tactile stimulation. For example, the same rhythm and tempo can be detected by seeing or hearing the pianist strike the notes of the keyboard, and the same size, shape, and texture can be detected by seeing or feeling an apple.

Virtually all events occur across time, are distributed across space, and have a characteristic intensity pattern, ...