AUDITORY AND VESTIBULAR SYSTEMSEvent-related potentials for interaural time differences and spectral cuesHautus, Michael J.a; Johnson, Blake W.b; Colling, Lincoln J.bAuthor Information aResearch Centre for Cognitive Neuroscience, Department of Psychology, University of Auckland, Auckland, New Zealand bMacquarie Centre for Cognitive Science, Macquarie University, Sydney, Australia Correspondence to Michael J. Hautus, Research Centre for Cognitive Neuroscience, Department of Psychology, University of Auckland, Private Bag 92019, Auckland, New Zealand Tel: +649 373 7599 x85924; fax: +649 373 7450; e-mail: [email protected] Received 16 March 2009 accepted 3 April 2009 NeuroReport: July 1, 2009 - Volume 20 - Issue 10 - p 951-956 doi: 10.1097/WNR.0b013e32832c92bf Buy Metrics Abstract Dichotic pitches and mistuned harmonics can each lead to the perception of one or two auditory objects. Comparison of event-related potentials for the perception of one versus two objects reveals an early negative and a late positive component. The relationship of these components with auditory segregation was further investigated using stimuli containing monaural spectral cues to pitch, binaural timing cues to pitch, or a combination of both, interleaved with control stimuli (no pitch). Stimuli containing timing cues or a combination of timing and spectral cues reliably elicited both components, which were of larger amplitude when both cues were present. For stimuli containing only spectral cues, the early component was attenuated in amplitude and no measurable late component was detected. © 2009 Lippincott Williams & Wilkins, Inc.