On the relationship between the redundant signals effect and temporal order judgments: parametric data and a new model.
Paradigms used to study the time course of the redundant signals effect (RSE; J. O. Miller, 1986) and temporal order judgments (TOJs) share many important similarities and address related questions concerning the time course of sensory processing. The author of this article proposes and tests a new aggregate diffusion-based model to quantitatively explain both the RSE and TOJs and the relationship between them. Parametric data (13 stimulus onset asynchronies) from an experiment with pairs of visual stimuli (626-nm LEDs) confirm that, relative to central signals (3 degrees), peripheral signals (35 degrees) yield slower reaction times, more strongly modulated RSE time-course functions, and flatter TOJ psychometric functions. All of these qualitative features are well captured, even in quantitative detail, by the aggregate diffusion model.
Schwarz
Wolf
W
Department of Psychology, University of Potsdam, Potsdam, Germany. wschwarz@rz.uni-potsdam.de
D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001288:Attention / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008960:Models, Psychological; D011597:Psychomotor Performance / Q000502:physiology*; D011601:Psychophysics; D011930:Reaction Time; D017603:Signal Detection, Psychological / Q000502:physiology*; D013998:Time Perception; D014796:Visual Perception / Q000502:physiology*