Poster A4, Saturday, March 25, 5:00 – 7:00 pm, Pacific Concourse
A resonator model predicts temporal orienting in rhythmic music
Brian K. Hurley1, Lauren K. Fink1, Petr Janata1; 1University of California, Davis
Evidence suggests that auditory stimuli with periodic temporal structure can entrain listeners’ attention to recurring, salient time points, such as the beat in music. Metrically structured music contains multiple hierarchically nested periodicities that ostensibly entrain attention to multiple periods (Large & Jones, 1999). How well can a model comprised of damped oscillators predict the loci of dynamic attention in metrically structured music? We test this question by combining a resonator model (Tomic & Janata, 2008) with a novel psychophysical paradigm for mapping dynamic attention in auditory stimuli. In two experiments, participants detected transient intensity deviants embedded within continuously repeating (looped) percussion patterns. For each stimulus we probed time points representing moments of model-predicted high salience and low salience. We assessed task performance by concurrently tracking separate detection thresholds for each probed time point within each stimulus loop. We repeated this paradigm for intensity increment and intensity decrement targets. Results from both tasks indicate that probe times associated with high resonator amplitude (i.e. greater modeled salience) are associated with low detection thresholds (i.e. better performance) and vice versa for low resonator amplitude. That these results replicate across the currently described experiments and a number of preceding pilot experiments suggest that Tomic and Janata’s resonator model reliably predicts temporal attending in rhythmic musical stimuli. These findings refine our understanding of temporal orienting of attention in realistic auditory scenes, such as music. Moreover, the paradigm developed here may be useful for probing temporal attention in other forms of auditory stimuli, such as speech.
Topic Area: ATTENTION: Auditory