Format

Send to

Choose Destination
Nat Rev Neurosci. 2019 Oct;20(10):609-623. doi: 10.1038/s41583-019-0206-5. Epub 2019 Aug 29.

Cortical mechanisms of spatial hearing.

Author information

1
Department of ENT/Audiology, School for Mental Health and Neuroscience (MHeNS), Faculty of Health, Medicine, and Life Sciences, Maastricht University Medical Center, Maastricht, Netherlands. kiki.vanderheijden@maastrichtuniversity.nl.
2
Laboratory of Integrative Neuroscience and Cognition, Department of Neuroscience, Georgetown Medical Center, Washington, DC, USA.
3
Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands.

Abstract

Humans and other animals use spatial hearing to rapidly localize events in the environment. However, neural encoding of sound location is a complex process involving the computation and integration of multiple spatial cues that are not represented directly in the sensory organ (the cochlea). Our understanding of these mechanisms has increased enormously in the past few years. Current research is focused on the contribution of animal models for understanding human spatial audition, the effects of behavioural demands on neural sound location encoding, the emergence of a cue-independent location representation in the auditory cortex, and the relationship between single-source and concurrent location encoding in complex auditory scenes. Furthermore, computational modelling seeks to unravel how neural representations of sound source locations are derived from the complex binaural waveforms of real-life sounds. In this article, we review and integrate the latest insights from neurophysiological, neuroimaging and computational modelling studies of mammalian spatial hearing. We propose that the cortical representation of sound location emerges from recurrent processing taking place in a dynamic, adaptive network of early (primary) and higher-order (posterior-dorsal and dorsolateral prefrontal) auditory regions. This cortical network accommodates changing behavioural requirements and is especially relevant for processing the location of real-life, complex sounds and complex auditory scenes.

PMID:
31467450
DOI:
10.1038/s41583-019-0206-5

Supplemental Content

Full text links

Icon for Nature Publishing Group
Loading ...
Support Center