Spatial organization of repetition rate processing in cat anterior auditory field

Auditory cortex updates incoming information on a segment by segment basis for human speech and animal communication. Measuring repetition rate transfer functions (RRTFs) captures temporal responses to repetitive sounds. In this study, we used repetitive click trains to describe the spatial distribu...

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Bibliographic Details
Published in:Hearing research 2011-10, Vol.280 (1-2), p.70-81
Main Authors: Imaizumi, Kazuo, Priebe, Nicholas J., Cheung, Steven W., Schreiner, Christoph E.
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Animals
Audition
Auditory Cortex - physiology
Auditory Pathways - physiology
Auditory Perception - physiology
Biological and medical sciences
Cats - physiology
Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation
Female
Fundamental and applied biological sciences. Psychology
Models, Animal
Models, Biological
Perception
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Vertebrates: nervous system and sense organs
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Summary:Auditory cortex updates incoming information on a segment by segment basis for human speech and animal communication. Measuring repetition rate transfer functions (RRTFs) captures temporal responses to repetitive sounds. In this study, we used repetitive click trains to describe the spatial distribution of RRTF responses in cat anterior auditory field (AAF) and to discern potential variations in local temporal processing capacity. A majority of RRTF filters are band-pass. Temporal parameters estimated from RRTFs and corrected for characteristic frequency or latency dependencies are non-homogeneously distributed across AAF. Unlike the shallow global gradient observed in spectral receptive field parameters, transitions from loci with high to low temporal parameters are steep. Quantitative spatial analysis suggests non-uniform, circumscribed local organization for temporal pattern processing superimposed on global organization for spectral processing in cat AAF. ► Measuring repetition rate transfer functions captures temporal pattern responses in cat AAF. ► The majority of synchronized rate transfer functions are band-pass. ► The average best repetition rate is 15.5 ± 9.6 Hz, in line with other studies of auditory core areas. ► Local clusters of similar response properties indicate a small-scale spatial organization for temporal processing.
ISSN:0378-5955
1878-5891
DOI:10.1016/j.heares.2011.04.008