Presentation Information
[P2-38]Beyond Pacemaker Speed: A Planned Investigation into Atemporal Perceptual Processes Underlying Differences in Auditory-Visual Duration Judgments
*Valtteri Arstila1, Jarno Tuominen1 (1. University of Turku (Finland))
Keywords:
Time perception,Auditory stimuli,Visual stimuli
Research consistently shows that auditory stimuli are perceived as longer than visual stimuli of equivalent duration. Current explanations for this phenomenon are based on the internal clock model; no detailed explanation has been presented within alternative frameworks, such as oscillator-based models like the striatal beat frequency model. The internal clock model explanation attributes the effect to modality-specific pacemaker speeds. This could imply either that one pacemaker operates at different speeds for different sensory modalities or that each modality has its own pacemaker operating at different speeds. (Wearden and Jones 2021) However, this approach amounts to merely explaining by naming; within the context of the internal clock model, the explanation doesn't truly elucidate the phenomenon but rather describes it in a novel way. As long as the accumulator and the switch/gate function largely similarly for both auditory and visual stimuli—both reasonable assumptions—differences in duration estimations can only be attributed to differences in pacemaker speeds. Consequently, the phenomenon remains unaccounted for.
In this presentation, we share initial results from psychophysical experiments—which compare duration judgments between matched auditory and visual stimuli—aimed at exploring alternative explanations for the differences in judged durations. Rather than attributing the duration judgment differences to unexplained variations in pacemaker speed, we anticipate demonstrating that these effects arise from more general and partly domain-specific perceptual and neural processes. Should our results support this explanation, they will challenge the explanatory value of modality-specific pacemaker speeds and advance our understanding of time perception by aligning it more closely with other perceptual processes.
Wearden, J. H., & Jones, L. A. (2021). “Judgements of the Duration of Auditory and Visual Stimuli.” Timing & Time Perception, 9(2), 199–224.
In this presentation, we share initial results from psychophysical experiments—which compare duration judgments between matched auditory and visual stimuli—aimed at exploring alternative explanations for the differences in judged durations. Rather than attributing the duration judgment differences to unexplained variations in pacemaker speed, we anticipate demonstrating that these effects arise from more general and partly domain-specific perceptual and neural processes. Should our results support this explanation, they will challenge the explanatory value of modality-specific pacemaker speeds and advance our understanding of time perception by aligning it more closely with other perceptual processes.
Wearden, J. H., & Jones, L. A. (2021). “Judgements of the Duration of Auditory and Visual Stimuli.” Timing & Time Perception, 9(2), 199–224.