Stimulus spacing effects in duration perception are larger for auditory stimuli: data and a model

Area of Science:

• Cognitive psychology
• Psychophysics
• Auditory and visual perception

Background:

• Duration bisection models typically examine stimulus spacing or modality independently.
• The interaction between stimulus spacing and modality in duration perception remains underexplored.

Purpose of the Study:

• To systematically investigate the interaction between stimulus spacing and stimulus modality in duration bisection tasks.
• To determine if stimulus spacing affects auditory and visual duration judgments differently.

Main Methods:

• Two experiments using duration bisection tasks were conducted.
• Stimuli varied in spacing and modality (auditory vs. visual).
• Temporal Range Frequency Theory was applied to analyze the data.

Main Results:

• Stimulus spacing influenced auditory duration classification in Experiment 1, but not visual.
• Experiment 2 revealed spacing effects for both auditory and visual stimuli, with larger effects for auditory stimuli.
• A modified Temporal Range Frequency Theory model explained the results by positing lower discriminability for visual stimulus durations.

Conclusions:

• Stimulus modality significantly interacts with stimulus spacing in duration bisection.
• Auditory durations are more discriminable than visual durations, impacting temporal judgments.
• The findings support and extend Temporal Range Frequency Theory in explaining cross-modal temporal perception differences.