title: Trial after trial: general processing consequences as a function of repetition and change in multidimensional sound.
abstract: While there are pointers relating to the consequences of repetition, a general framework regarding the cognitive implications of processing multidimensional stimuli as a function of previous stimulus history is currently lacking. Three experiments using sounds varying in location and pitch were carried out, in which the immediate consequences of repeating or changing task-relevant and task-irrelevant attributes were orthogonally examined. A consistent pattern of data was shown, in that the magnitude of selective attention failure was larger when the task-relevant value repeated across trials, while differences between dimensions were larger when the task-relevant value changed across trials. These effects of irrelevance and dimension as a function of intertrial contingency are summarized in a model depicting the dynamic allocation of processing resource.
authors.affiliation: Department of Psychology, Ryerson University, Toronto, Ontario, Canada. ben.dyson@psych.ryerson.ca
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Dyson
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001288:Attention / Q000502:physiology*; D003463:Cues; D004192:Discrimination, Psychological / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D010898:Pitch Perception / Q000502:physiology*; D011571:Psychoacoustics; D011930:Reaction Time / Q000502:physiology; D013017:Sound Localization / Q000502:physiology*; D055815:Young Adult