title: The effect of onset asynchrony on relative weights in profile analysis.
abstract: Decision weights were estimated in a profile analysis task to determine whether onset asynchronies between the signal component and the nonsignal components encourage the segregation of the signal relative to the other components. The signal component onset was either synchronous or asynchronous with respect to the nonsignal components. In the asynchronous conditions, thresholds were higher and the decision weights were less efficient than in the synchronous conditions. These data are largely consistent with a segregation hypothesis: onset asynchrony encourages subjects to shift strategies from one of spectral shape discrimination toward one of intensity discrimination.
authors.affiliation: Department of Psychology, University of Pennsylvania, 3401 Walnut Street, Suite 302C, Philadelphia, Pennsylvania 19104, USA. qjyspace@yahoo.com
authors.forename: Jinyu
authors.initials: J
authors.lastname: Qian
authors.forename: Virginia M
authors.initials: VM
authors.lastname: Richards
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001307:Auditory Perception; D001309:Auditory Threshold; D006801:Humans; D016014:Linear Models; D016015:Logistic Models; D010470:Perceptual Masking; D010897:Pitch Discrimination; D011571:Psychoacoustics; D017603:Signal Detection, Psychological; D013647:Task Performance and Analysis; D013997:Time Factors; D055815:Young Adult