Apparent slowing of bimanually alternating pulse trains.

Interaural and monaural clicks and clocks: Tempo difference versus attention switching.

“…Because of the inertia of the attention switching mechanism, observers give up trying to switch back and forth between the ears and, rather, direct their attention toward one ear. Axelrod and Nakao (1974;also see Huggins, 1974;Nakao & Axelrod, 1976) were the first authors who explicitly proposed this explanation to account for the interaural underestimation. It is obvious that streaming by locus and spatial stream segregation (Judd, 1979) may be viewed as generalizations of the streaming by frequency phenomenon (Bregman, 1978;van Noorden, 1975).…”