The perception of regularity in an isochronous stimulus in zebra finches (Taeniopygia guttata) and humans.
Perceiving temporal regularity in an auditory stimulus is considered one of the basic features of musicality. Here we examine whether zebra finches can detect regularity in an isochronous stimulus. Using a go/no go paradigm we show that zebra finches are able to distinguish between an isochronous and an irregular stimulus. However, when the tempo of the isochronous stimulus is changed, it is no longer treated as similar to the training stimulus. Training with three isochronous and three irregular stimuli did not result in improvement of the generalization. In contrast, humans, exposed to the same stimuli, readily generalized across tempo changes. Our results suggest that zebra finches distinguish the different stimuli by learning specific local temporal features of each individual stimulus rather than attending to the global structure of the stimuli, i.e., to the temporal regularity.
Behavioural Biology, Institute of Biology Leiden, Leiden University, P.O. Box 9505, 2300 RA Leiden, Netherlands.
Jeroen
J
van der Aa
Amsterdam Brain and Cognition, Institute for Logic, Language and Computation, University of Amsterdam, Netherlands.
Henkjan
H
Honing
Behavioural Biology, Institute of Biology Leiden, Leiden University, P.O. Box 9505, 2300 RA Leiden, Netherlands; Leiden Institute for Brain and Cognition, Leiden University, Netherlands. Electronic address: c.j.ten.cate@biology.leidenuniv.nl.
Carel
C
ten Cate
D000328:Adult; D000818:Animals; D001307:Auditory Perception / Q000502:physiology*; D001522:Behavior, Animal / Q000502:physiology*; D003216:Conditioning, Operant / Q000502:physiology; D005260:Female; D046369:Finches / Q000502:physiology*; D005793:Generalization, Psychological / Q000502:physiology*; D006801:Humans; D008297:Male; D009146:Music; D013998:Time Perception / Q000502:physiology*
Auditory discrimination; Music; Rhythm; Tempo; Zebra finches