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dc.contributor.author
Graziano, Martín
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dc.contributor.author
Sigman, Mariano
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dc.date.available
2018-10-03T19:04:50Z
dc.date.issued
2008-12
dc.identifier.citation
Graziano, Martín; Sigman, Mariano; The dynamics of sensory buffers: Geometric, spatial, and experience-dependent shaping of iconic memory; Association for Research in Vision and Ophthalmology; Journal of Vision; 8; 5; 12-2008; 1-13
dc.identifier.issn
1534-7362
dc.identifier.uri
http://hdl.handle.net/11336/61574
dc.description.abstract
When a stimulus is presented, its sensory trace decays rapidly, lasting for approximately 1000 ms. This brief and labile memory, referred as iconic memory, serves as a buffer before information is transferred to working memory and executive control. Here we explored the effect of different factors - geometric, spatial, and experience - with respect to the access and the maintenance of information in iconic memory and the progressive distortion of this memory. We studied performance in a partial report paradigm, a design wherein recall of only part of a stimulus array is required. Subjects had to report the identity of a letter in a location that was cued in a variable delay after the stimulus onset. Performance decayed exponentially with time, and we studied the different parameters (time constant, zero-delay value, and decay amplitude) as a function of the different factors. We observed that experience (determined by letter frequency) affected the access to iconic memory but not the temporal decay constant. On the contrary, spatial position affected the temporal course of delay. The entropy of the error distribution increased with time reflecting a progressive morphological distortion of the iconic buffer. We discuss our results on the context of a model of information access to executive control and how it is affected by learning and attention. © ARVO.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Association for Research in Vision and Ophthalmology
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Attention
dc.subject
Memory
dc.subject
Object Recognition
dc.subject
Perceptual Learning
dc.subject
Reading
dc.subject
Search
dc.subject.classification
Otras Ciencias Biológicas
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
The dynamics of sensory buffers: Geometric, spatial, and experience-dependent shaping of iconic memory
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-03T17:45:49Z
dc.journal.volume
8
dc.journal.number
5
dc.journal.pagination
1-13
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Rockville, MD 20852
dc.description.fil
Fil: Graziano, Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.description.fil
Fil: Sigman, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.journal.title
Journal of Vision
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.journalofvision.org/8/5/9/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1167/8.5.9
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