Dynamics underlying auditory‐object‐boundary detection in primary auditory cortex

Auditory object analysis requires the fundamental perceptual process of detecting boundaries between auditory objects. However, the dynamics underlying the identification of discontinuities at object boundaries are not well understood. Here, we employed a synthetic stimulus composed of frequency‐mod...

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Bibliographic Details
Published in:The European journal of neuroscience 2021-11, Vol.54 (9), p.7274-7288
Main Authors: Dheerendra, Pradeep, Barascud, Nicolas, Kumar, Sukhbinder, Overath, Tobias, Griffiths, Timothy D.
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Auditory Cortex
auditory object
Boundaries
Brain Mapping
change detection
Cortex (auditory)
Drift
Evoked Potentials, Auditory
Frequency dependence
Functional magnetic resonance imaging
Hearing
Humans
Magnetic Resonance Imaging
Magnetoencephalography
MEG
Neuroimaging
perceptual decision making
Statistical analysis
statistical learning
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Summary:Auditory object analysis requires the fundamental perceptual process of detecting boundaries between auditory objects. However, the dynamics underlying the identification of discontinuities at object boundaries are not well understood. Here, we employed a synthetic stimulus composed of frequency‐modulated ramps known as ‘acoustic textures’, where boundaries were created by changing the underlying spectrotemporal statistics. We collected magnetoencephalographic (MEG) data from human volunteers and observed a slow (
ISSN:0953-816X
1460-9568
DOI:10.1111/ejn.15471