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Bottlenecks of Motion Processing during a Visual Glance: The Leaky Flask Model
Where do the bottlenecks for information and attention lie when our visual system processes incoming stimuli? The human visual system encodes the incoming stimulus and transfers its contents into three major memory systems with increasing time scales, viz., sensory (or iconic) memory, visual short-t...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3877086/ https://www.ncbi.nlm.nih.gov/pubmed/24391806 http://dx.doi.org/10.1371/journal.pone.0083671 |
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author | Öğmen, Haluk Ekiz, Onur Huynh, Duong Bedell, Harold E. Tripathy, Srimant P. |
author_facet | Öğmen, Haluk Ekiz, Onur Huynh, Duong Bedell, Harold E. Tripathy, Srimant P. |
author_sort | Öğmen, Haluk |
collection | PubMed |
description | Where do the bottlenecks for information and attention lie when our visual system processes incoming stimuli? The human visual system encodes the incoming stimulus and transfers its contents into three major memory systems with increasing time scales, viz., sensory (or iconic) memory, visual short-term memory (VSTM), and long-term memory (LTM). It is commonly believed that the major bottleneck of information processing resides in VSTM. In contrast to this view, we show major bottlenecks for motion processing prior to VSTM. In the first experiment, we examined bottlenecks at the stimulus encoding stage through a partial-report technique by delivering the cue immediately at the end of the stimulus presentation. In the second experiment, we varied the cue delay to investigate sensory memory and VSTM. Performance decayed exponentially as a function of cue delay and we used the time-constant of the exponential-decay to demarcate sensory memory from VSTM. We then decomposed performance in terms of quality and quantity measures to analyze bottlenecks along these dimensions. In terms of the quality of information, two thirds to three quarters of the motion-processing bottleneck occurs in stimulus encoding rather than memory stages. In terms of the quantity of information, the motion-processing bottleneck is distributed, with the stimulus-encoding stage accounting for one third of the bottleneck. The bottleneck for the stimulus-encoding stage is dominated by the selection compared to the filtering function of attention. We also found that the filtering function of attention is operating mainly at the sensory memory stage in a specific manner, i.e., influencing only quantity and sparing quality. These results provide a novel and more complete understanding of information processing and storage bottlenecks for motion processing. |
format | Online Article Text |
id | pubmed-3877086 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-38770862014-01-03 Bottlenecks of Motion Processing during a Visual Glance: The Leaky Flask Model Öğmen, Haluk Ekiz, Onur Huynh, Duong Bedell, Harold E. Tripathy, Srimant P. PLoS One Research Article Where do the bottlenecks for information and attention lie when our visual system processes incoming stimuli? The human visual system encodes the incoming stimulus and transfers its contents into three major memory systems with increasing time scales, viz., sensory (or iconic) memory, visual short-term memory (VSTM), and long-term memory (LTM). It is commonly believed that the major bottleneck of information processing resides in VSTM. In contrast to this view, we show major bottlenecks for motion processing prior to VSTM. In the first experiment, we examined bottlenecks at the stimulus encoding stage through a partial-report technique by delivering the cue immediately at the end of the stimulus presentation. In the second experiment, we varied the cue delay to investigate sensory memory and VSTM. Performance decayed exponentially as a function of cue delay and we used the time-constant of the exponential-decay to demarcate sensory memory from VSTM. We then decomposed performance in terms of quality and quantity measures to analyze bottlenecks along these dimensions. In terms of the quality of information, two thirds to three quarters of the motion-processing bottleneck occurs in stimulus encoding rather than memory stages. In terms of the quantity of information, the motion-processing bottleneck is distributed, with the stimulus-encoding stage accounting for one third of the bottleneck. The bottleneck for the stimulus-encoding stage is dominated by the selection compared to the filtering function of attention. We also found that the filtering function of attention is operating mainly at the sensory memory stage in a specific manner, i.e., influencing only quantity and sparing quality. These results provide a novel and more complete understanding of information processing and storage bottlenecks for motion processing. Public Library of Science 2013-12-31 /pmc/articles/PMC3877086/ /pubmed/24391806 http://dx.doi.org/10.1371/journal.pone.0083671 Text en © 2013 Öğmen et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Öğmen, Haluk Ekiz, Onur Huynh, Duong Bedell, Harold E. Tripathy, Srimant P. Bottlenecks of Motion Processing during a Visual Glance: The Leaky Flask Model |
title | Bottlenecks of Motion Processing during a Visual Glance: The Leaky Flask Model |
title_full | Bottlenecks of Motion Processing during a Visual Glance: The Leaky Flask Model |
title_fullStr | Bottlenecks of Motion Processing during a Visual Glance: The Leaky Flask Model |
title_full_unstemmed | Bottlenecks of Motion Processing during a Visual Glance: The Leaky Flask Model |
title_short | Bottlenecks of Motion Processing during a Visual Glance: The Leaky Flask Model |
title_sort | bottlenecks of motion processing during a visual glance: the leaky flask model |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3877086/ https://www.ncbi.nlm.nih.gov/pubmed/24391806 http://dx.doi.org/10.1371/journal.pone.0083671 |
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