“…A number of previous studies have shown that normal listeners are able to lateralize signals on the basis of interaural differences even when the signals differ in spectral content at the two ears (B6k6sy, 1963;Deatherage, 1961;Harris, 1960;Henning, 1974;Perrott and Williams, 1970;Thurlow and Elfner, 1959;Zerlin, 1969;Zurek and Leshowitz, 1975). Moreover, when the stimuli are amplitude-modulated tones (Nuetzel and Hafter, 1981) or tone bursts (Scharf, 1974;Scharf et al, 1976), the onset-time difference required to lateralize toward the leading ear A Tis nearly independent of the frequency difference AFbetween the two ears provided the tones are in the same critical band; however, beyond the critical bandwidth, A T increases with AF. The critical bandwidth measured in the lateralization of tone bursts centered on 0.5 kHz corresponds closely to the approximately 100-Hz bandwidth that several investigators have used to interpret binaural masking level differences at 0.25 and 0.5 kHz (Webster, 1951;Lang-ford and Jeffress, 1964; Rabiner, 1964;Sondhi, 1965).…”