“…These gaps mimic voice-onset time and similar gaps within and between phonemes, which are critical cues for segmentation and discrimination of speech sounds (Lisker and Abramson, 1964, Brugge and Merzenich, 1973, Eggermont, 1999, Phillips et al, 2002, Engineer et al, 2008. Recent work in rats and mice has shown that auditory cortex is necessary for detection of brief gaps (Ͻ50 ms), but not longer gaps (Ison et al, 1991, Threlkeld et al, 2008, Weible et al, 2014. However, auditory cortex is not necessary for many other auditory tasks, such as prepulse inhibition (PPI) of startle responses, frequency discrimination, or fear conditioning to pure tone stimuli (Ohl et al, 1999, LeDoux, 2000, Swerdlow et al, 2001.…”