Brain Bases for Auditory Stimulus-Driven Figure-Ground Segregation
<p>Auditory figure–ground segregation, listeners' ability to selectively hear out a sound of interest from a background of sounds, is a fundamental aspect of scene analysis. In contrast to the disordered acoustic environment we experience during listening, most studies of auditory segrega...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Published: |
Society for Neuroscience
2011
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| _version_ | 1797100134414155776 |
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| author | Teki, S Chait, M Kumar, S von Kriegstein, K Griffiths, T |
| author_facet | Teki, S Chait, M Kumar, S von Kriegstein, K Griffiths, T |
| author_sort | Teki, S |
| collection | OXFORD |
| description | <p>Auditory figure–ground segregation, listeners' ability to selectively hear out a sound of interest from a background of sounds, is a fundamental aspect of scene analysis. In contrast to the disordered acoustic environment we experience during listening, most studies of auditory segregation have used relatively simple, temporally regular signals. We developed new figure–ground stimulus that incorporates stochastic variation of the figure and background that captures the rich spectrotemporal of natural acoustic scenes. Figure and background signals overlap in spectrotemporal space, but vary in the statistics fluctuation, such that the only way to extract the figure is by integrating the patterns over time and frequency. Our behavioral demonstrate that human listeners are remarkably sensitive to the appearance of such figures. </p> <p>In a functional magnetic resonance imaging experiment, aimed at investigating preattentive, stimulus-driven, auditory segregation, naive subjects listened to these stimuli while performing an irrelevant task. Results demonstrate significant in the intraparietal sulcus (IPS) and the superior temporal sulcus related to bottom-up, stimulus-driven figure–ground. We did not observe any significant activation in the primary auditory cortex. Our results support a role for, bottom-up mechanisms in the IPS in mediating stimulus-driven, auditory figure–ground segregation, which is consistent accumulating evidence implicating the IPS in structuring sensory input and perceptual organization. </p> |
| first_indexed | 2024-03-07T05:33:27Z |
| format | Journal article |
| id | oxford-uuid:e30fa512-37ef-4100-82bf-1fc119dac2fb |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:33:27Z |
| publishDate | 2011 |
| publisher | Society for Neuroscience |
| record_format | dspace |
| spelling | oxford-uuid:e30fa512-37ef-4100-82bf-1fc119dac2fb2022-03-27T10:06:10ZBrain Bases for Auditory Stimulus-Driven Figure-Ground SegregationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e30fa512-37ef-4100-82bf-1fc119dac2fbSymplectic Elements at OxfordSociety for Neuroscience2011Teki, SChait, MKumar, Svon Kriegstein, KGriffiths, T<p>Auditory figure–ground segregation, listeners' ability to selectively hear out a sound of interest from a background of sounds, is a fundamental aspect of scene analysis. In contrast to the disordered acoustic environment we experience during listening, most studies of auditory segregation have used relatively simple, temporally regular signals. We developed new figure–ground stimulus that incorporates stochastic variation of the figure and background that captures the rich spectrotemporal of natural acoustic scenes. Figure and background signals overlap in spectrotemporal space, but vary in the statistics fluctuation, such that the only way to extract the figure is by integrating the patterns over time and frequency. Our behavioral demonstrate that human listeners are remarkably sensitive to the appearance of such figures. </p> <p>In a functional magnetic resonance imaging experiment, aimed at investigating preattentive, stimulus-driven, auditory segregation, naive subjects listened to these stimuli while performing an irrelevant task. Results demonstrate significant in the intraparietal sulcus (IPS) and the superior temporal sulcus related to bottom-up, stimulus-driven figure–ground. We did not observe any significant activation in the primary auditory cortex. Our results support a role for, bottom-up mechanisms in the IPS in mediating stimulus-driven, auditory figure–ground segregation, which is consistent accumulating evidence implicating the IPS in structuring sensory input and perceptual organization. </p> |
| spellingShingle | Teki, S Chait, M Kumar, S von Kriegstein, K Griffiths, T Brain Bases for Auditory Stimulus-Driven Figure-Ground Segregation |
| title | Brain Bases for Auditory Stimulus-Driven Figure-Ground Segregation |
| title_full | Brain Bases for Auditory Stimulus-Driven Figure-Ground Segregation |
| title_fullStr | Brain Bases for Auditory Stimulus-Driven Figure-Ground Segregation |
| title_full_unstemmed | Brain Bases for Auditory Stimulus-Driven Figure-Ground Segregation |
| title_short | Brain Bases for Auditory Stimulus-Driven Figure-Ground Segregation |
| title_sort | brain bases for auditory stimulus driven figure ground segregation |
| work_keys_str_mv | AT tekis brainbasesforauditorystimulusdrivenfiguregroundsegregation AT chaitm brainbasesforauditorystimulusdrivenfiguregroundsegregation AT kumars brainbasesforauditorystimulusdrivenfiguregroundsegregation AT vonkriegsteink brainbasesforauditorystimulusdrivenfiguregroundsegregation AT griffithst brainbasesforauditorystimulusdrivenfiguregroundsegregation |