Perceptual biases for rhythm: The Mismatch Negativity latency indexes the privileged status of binary vs non-binary interval ratios
| Autor: | Cécile Colin, X. Pablos Martin, Bruno Rossion, Paul Deltenre, Ingrid Hoonhorst, Emily Markessis |
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| Rok vydání: | 2007 |
| Předmět: |
Adult
Male Periodicity Interval ratio medicine.medical_specialty Echoic memory media_common.quotation_subject Mismatch negativity Neuropsychological Tests Audiology Developmental psychology Pitch Discrimination Rhythm Bias Memory Physiology (medical) Perception Reaction Time medicine Humans Latency (engineering) Evoked Potentials media_common Cerebral Cortex Brain Mapping Sensory memory Electroencephalography Recognition Psychology Signal Processing Computer-Assisted Sensory Systems Interval (music) Acoustic Stimulation Neurology Time Perception Auditory Perception Female Neurology (clinical) Psychology Music |
| Zdroj: | Clinical Neurophysiology. 118:2709-2715 |
| ISSN: | 1388-2457 |
| DOI: | 10.1016/j.clinph.2007.08.019 |
| Popis: | OBJECTIVE: Rhythm perception appears to be non-linear as human subjects are better at discriminating, categorizing and reproducing rhythms containing binary vs non-binary (e.a. 1:2 vs 1:3) as well as metrical vs non-metrical (e.a. 1:2 vs 1:2.5) interval ratios. This study examined the representation of binary and non-binary interval ratios within the sensory memory, thus yielding a truly sensory, pre-motor, attention-independent neural representation of rhythmical intervals. METHODS: Five interval ratios, one binary, flanked by four non-binary ones, were compared on the basis of the MMN they evoked when contrasted against a common standard interval. RESULTS: For all five intervals, the larger the contrast was, the larger the MMN amplitude was. The binary interval evoked a significantly much shorter (by at least 23 ms) MMN latency than the other intervals, whereas no latency difference was observed between the four non-binary intervals. CONCLUSIONS: These results show that the privileged perceptual status of binary rhythmical intervals is already present in the sensory representations found in echoic memory at an early, automatic, pre-perceptual and pre-motor level. SIGNIFICANCE: MMN latency can be used to study rhythm perception at a truly sensory level, without any contribution from the motor system. |
| Databáze: | OpenAIRE |
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