Filters








1,549 Hits in 5.4 sec

Neural dynamics of change detection in crowded acoustic scenes

Ediz Sohoglu, Maria Chait
2016 NeuroImage  
Two key questions concerning change detection in crowded acoustic environments are the extent to which cortical processing is specialized for different forms of acoustic change and when in the time-course  ...  Here, we address these issues by using magnetoencephalography (MEG) to probe the cortical dynamics of change detection in ongoing acoustic scenes containing as many as ten concurrent sources.  ...  Discussion We investigated the dynamics of cortical change-evoked responses in rapidly unfolding, crowded acoustic scenes.  ... 
doi:10.1016/j.neuroimage.2015.11.050 pmid:26631816 pmcid:PMC4739509 fatcat:bwou2xmz6jayne3xpswfjkfycu

On the Emergence and Awareness of Auditory Objects

Shihab Shamma
2008 PLoS Biology  
awareness of the target, i.e., a change in the auditory scene as the target becomes the object of conscious perception and is differentiated from the stimulus.  ...  From left to right, natural acoustic scenes usually contain mixtures of multiple speakers (red and blue signals) and music.  ...  Streams: Streams serve the role of "objects" in the auditory perception of acoustic scenes.  ... 
doi:10.1371/journal.pbio.0060155 pmid:18578570 pmcid:PMC2435155 fatcat:degfhfwjj5bednczmbeb65isua

The encoding of auditory objects in auditory cortex: Insights from magnetoencephalography

Jonathan Z. Simon
2015 International Journal of Psychophysiology  
The studies use neural responses obtained from different experiments in which subjects selectively listen to one of two competing auditory streams embedded in a variety of auditory scenes.  ...  Using magnetoencephalography (MEG) recordings of the neural responses of human subjects listening to complex auditory scenes, we review studies that demonstrate that auditory objects are indeed neurally  ...  Acknowledgments This research was supported by the National Institute of Deafness and Other Communication Disorders Grant R01-DC-008342.  ... 
doi:10.1016/j.ijpsycho.2014.05.005 pmid:24841996 pmcid:PMC4233196 fatcat:o3wsb4z2kjaurdtgaljmlzwfky

Push-pull competition between bottom-up and top-down auditory attention to natural soundscapes

Nicholas Huang, Mounya Elhilali
2020 eLife  
In line with a hypothesis of limited attentional resources, the modulation of neural activity by bottom-up attention is graded by degree of salience of ambient events.  ...  The current study uses electroencephalography to explore how the push-pull interaction between top-down and bottom-up attention manifests itself in dynamic auditory scenes.  ...  Acknowledgements This research was supported by National Institutes of Health grants R01HL133043 and U01AG058532, National Science Foundation research grant 1734744 and Office of Naval Research grants  ... 
doi:10.7554/elife.52984 pmid:32196457 fatcat:exjzyq2ja5d65i6supv6c4larq

Memory for sound, with an ear toward hearing in complex auditory scenes

Joel S. Snyder, Melissa K. Gregg
2011 Attention, Perception & Psychophysics  
These studies have provided important information about how well auditory objects are encoded in memory and how well listeners can notice changes in auditory scenes.  ...  An area of research that has experienced recent growth is the study of memory during perception of simple and complex auditory scenes.  ...  Determining whether dynamic visual scenes (e.g., a video of a crowded café scene) are better remembered than corresponding dynamic auditory scenes (e.g., the sound track of a café scene) requires further  ... 
doi:10.3758/s13414-011-0189-4 pmid:21809152 fatcat:sbaw3pqc4jbszfyqo2inkwqgg4

Automatic Event Detection for Signal-based Surveillance [article]

Jingxin Xu, Clinton Fookes, Sridha Sridharan
2016 arXiv   pre-print
This article provides an overview of automatic surveillance event detection techniques .  ...  Despite it's popularity in research, it is still too challenging a problem to be realised in a real world deployment.  ...  Histogram of Oriented Swarms" to capture the crowd dynamic and detect abnormal behaviours.  ... 
arXiv:1612.01611v1 fatcat:bv57e3k2qbaxle3hy2pdehovxq

Contextual modulation of sound processing in the auditory cortex

C Angeloni, MN Geffen
2018 Current Opinion in Neurobiology  
Our auditory system needs to efficiently encode the same sounds in a variety of different contexts, while preserving the ability to separate complex sounds within an acoustic scene.  ...  In everyday acoustic environments, we navigate through a maze of sounds that possess a complex spectrotemporal structure, spanning many frequencies and exhibiting temporal modulations that differ within  ...  , providing a potential neural substrate for CMR, and behavioral detection of sounds in complex environments [44, 59, 60] .  ... 
doi:10.1016/j.conb.2017.10.012 pmid:29125987 pmcid:PMC6037899 fatcat:nj6db5ce7bdnzfjk6q7kim2ud4

Automatic for the People: Crowd-driven Generative Scores Using Machine Vision and Manhattan

Chris Nash
2021 Zenodo  
realtime movements of objects and people in a live scene, such as crowds on a public concourse.  ...  The approach presented here uses machine vision to process a video feed from a scene, from which detected objects and people are input to the Manhattan digital music notation, which integrates music editing  ...  changing structures in an external chaotic system, such as a crowd of people.  ... 
doi:10.5281/zenodo.4764766 fatcat:wyoxtdum6vhyllwrznnjwhrpki

Listening in Complex Acoustic Scenes

Andrew J King, Kerry MM Walker
2020 Current Opinion in Physiology  
Furthermore, the neural processing underlying auditory scene analysis is shaped by experience over multiple timescales.  ...  Central to this ability is the capacity of neurons to adapt to the statistics of sounds reaching the ears, which helps to generate noise-tolerant representations of sounds in the brain.  ...  The hope is that this information can be used to amplify target-relevant acoustical features in a listener's hearing prosthetic within a crowded auditory scene.  ... 
doi:10.1016/j.cophys.2020.09.001 pmid:33479600 pmcid:PMC7116612 fatcat:5p23w4cturbbrc4o6jqrpfm7fy

Detecting and representing predictable structure during auditory scene analysis

Ediz Sohoglu, Maria Chait
2016 eLife  
MEG in passive listeners and those actively detecting appearance events revealed increased sustained activity in auditory and parietal cortex in REG relative to RAND scenes, emerging ~400 ms of scene-onset  ...  Listeners were more accurate and quicker to detect source appearance in scenes comprised of temporally-regular (REG), rather than random (RAND), sources.  ...  The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.  ... 
doi:10.7554/elife.19113 pmid:27602577 pmcid:PMC5014546 fatcat:unngm3fsizeb5obxczipcsdyxm

Crowd-driven Music: Interactive and Generative Approaches using Machine Vision and Manhattan

Chris Nash
2020 Proceedings of the International Conference on New Interfaces for Musical Expression  
The approach presented uses realtime machine vision applied to a live video feed of a scene, from which detected objects and people are fed into Manhattan (Nash, 2014), a digital music notation that integrates  ...  This paper details technologies and artistic approaches to crowd-driven music, discussed in the context of a live public installation in which activity in a public space (a busy railway platform) is used  ...  This project was principally funded through the award of a Vice Chancellor's Early Career Researcher fellowship from the University of the West of England (UWE Bristol).  ... 
doi:10.5281/zenodo.4813346 fatcat:zg2lxqjibjhj7aaedse5f5stzy

Detection of Appearing and Disappearing Objects in Complex Acoustic Scenes

Francisco Cervantes Constantino, Leyla Pinggera, Supathum Paranamana, Makio Kashino, Maria Chait, Claude Alain
2012 PLoS ONE  
Together, our results suggest a role for neural adaptation and sensitivity to transients in the process of auditory change detection, similar to what has been demonstrated for visual change detection.  ...  Here, we investigate listeners' sensitivity to changes in complex acoustic scenes-what makes certain events "pop-out" and grab attention while others remain unnoticed?  ...  Our stimuli were specifically designed to model such fluctuating sources as a means for investigating change detection in realistically dynamic acoustic scenes.  ... 
doi:10.1371/journal.pone.0046167 pmid:23029426 pmcid:PMC3459829 fatcat:psxnysrr6nglvl7kku4dcs2noe

Sensitivity to temporal structure facilitates perceptual analysis of complex auditory scenes

Lucie Aman, Samantha Picken, Lefkothea-Vasiliki Andreou, Maria Chait
2020 Hearing Research  
These findings establish that perception of complex acoustic scenes relies on the availability of detailed representations of the regularities automatically extracted from multiple concurrent streams.  ...  Here we investigated this issue in the context of hearing.  ...  This reveals that even in very crowded scenes, participants are able to utilize temporal regularity, of which they are not consciously aware, to efficiently detect change events.  ... 
doi:10.1016/j.heares.2020.108111 pmid:33333425 pmcid:PMC7812374 fatcat:g73xur5mvrd3zjytnv4wm4lnry

Audio Surveillance through Known Event Classification

F. Grezl, J. Cernocky
2009 Radioengineering  
Further, a specific audio event is detected with use of audio classification, which helps the detection to focus on a signal of specific behavior.  ...  The use of the proposed system for unknown event detection is also suggested and evaluated.  ...  This is relevant especially when the sound ambiance changes (from quiet station to crowd of normally behaving people Evaluation of Unknown Event Detection Detection of unknown events is a basic classification  ... 
doaj:90a66fb18e814239ae2e1d9101af1553 fatcat:r3v25w2d65gtdd6vqvtvpvksoy

Attention to natural auditory signals

Emily Caporello Bluvas, Timothy Q. Gentner
2013 Hearing Research  
auditory attention are implemented in single neurons or neural circuits.  ...  Here we review the role of selective attention in modulating auditory responses to complex natural stimuli in humans.  ...  that have adapted in the context of natural acoustic scenes.  ... 
doi:10.1016/j.heares.2013.08.007 pmid:23981812 fatcat:aahc23yrdbgcbnnr3vng64m4me
« Previous Showing results 1 — 15 out of 1,549 results