The kappa effect or perceptual time dilation is a temporal perceptual illusion that can arise when observers judge the elapsed time between sensory stimuli applied sequentially at different locations. In perceiving a sequence of consecutive stimuli, subjects tend to overestimate the elapsed time between two successive stimuli when the distance between the stimuli is sufficiently large, and to underestimate the elapsed time when the distance is sufficiently small. == In different sensory modalities == The kappa effect can occur with visual (e.g., flashes of light), auditory (e.g., tones), or tactile...

"Born to Be Wild" is a song first performed by the band Steppenwolf, written by Mars Bonfire. The song is often invoked in both popular and counter culture to denote a biker appearance or attitude. It is sometimes described as the first heavy metal song, and the second verse lyric "heavy metal thunder" marks the first use of this term in rock music (although not as a description of a musical style). == Composition == "Born to Be Wild" was written by Mars Bonfire (who also wrote several other songs for Steppenwolf) as a ballad. Bonfire was previously a member of the Sparrows, the predecessor band...