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Does order matter? Harmonic priming effects for scrambled tonal chord sequences.
David R W Sears1, Jonathan E Verbeten1, Hannah M Percival1
1Performing Arts Research Lab (PeARL), School of Music, Texas Tech University.
Summary
Scrambling the order of chords in tonal sequences disrupts music processing speed and accuracy. This suggests that the temporal order of musical events is crucial for harmonic priming.
Area of Science:
- Music cognition
- Psychoacoustics
- Computational musicology
Background:
- Tonal music relies on predictable chord sequences.
- Disrupting this order may impact auditory processing.
- Understanding temporal coherence is key to harmonic perception.
Purpose of the Study:
- To investigate if scrambling chord order affects processing speed and accuracy.
- To examine the role of temporal coherence in harmonic priming.
- To compare behavioral results with computational model predictions.
Main Methods:
- Two behavioral experiments using 9-chord sequences adapted from Bach chorales.
- Sequences were either unchanged (high coherence) or scrambled (medium/low coherence).
- Participants identified out-of-tune chords; response times and accuracy were measured.
Main Results:
- Response times and accuracy mirrored the predicted incoherence of scrambled sequences.
- Harmonic priming effects correlated with the temporal order of chords.
- Results support the influence of sequence order on musical perception.
Conclusions:
- The temporal order of chords significantly impacts music processing.
- Findings support temporal models of tonal-harmonic structure.
- This research offers insights into how the brain processes musical sequences.
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