However, audition, and in particular the individual components that collectively comprise the soundscape, a term coined by Schafer to describe the ever-present array of sounds that constitute the sonic environment, also significantly inform the various schemata used to characterise differing landscape types. This interpretation is supported by the auditory reaction times, which are 50 to 60ms faster than that of the visual modality. It is also known that sound can alter visual perception and that under certain conditions areas of the brain involved in processing auditory information can be activated in response to visual stimuli.