IFIBA   22255
INSTITUTO DE FISICA DE BUENOS AIRES
Unidad Ejecutora - UE
artículos
Título:
The Spatial and Temporal Construction of Confidence in the Visual Scene
Autor/es:
M GRAZIANO; M SIGMAN
Revista:
PLOS ONE
Editorial:
PUBLIC LIBRARY SCIENCE
Referencias:
Año: 2009 vol. 4 p. 1 - 10
ISSN:
1932-6203
Resumen:
Abstract
Human subjects can report many items of a cluttered field a few hundred milliseconds after stimulus presentation. This
memory decays rapidly and after a second only 3 or 4 items can be stored in working memory. Here we compared the
dynamics of objective performance with a measure of subjective report and we observed that 1) Objective performance
beyond explicit subjective reports (blindsight) was significantly more pronounced within a short temporal interval and
within specific locations of the visual field which were robust across sessions 2) High confidence errors (false beliefs) were
largely confined to a small spatial window neighboring the cue. The size of this window did not change in time 3) Subjective
confidence showed a moderate but consistent decrease with time, independent of all other experimental factors. Our study
allowed us to asses quantitatively the temporal and spatial access to an objective response and to subjective reports.