About
Contact
Help
Sending publications
How to publish
Advanced Search
View Item 
  •   Home
  • Facultad de Medicina
  • Artículos de revistas
  • View Item
  •   Home
  • Facultad de Medicina
  • Artículos de revistas
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse byCommunities and CollectionsDateAuthorsTitlesSubjectsThis CollectionDateAuthorsTitlesSubjects

My Account

Login to my accountRegister
Biblioteca Digital - Universidad de Chile
Revistas Chilenas
Repositorios Latinoamericanos
Tesis LatinoAmericanas
Tesis chilenas
Related linksRegistry of Open Access RepositoriesOpenDOARGoogle scholarCOREBASE
My Account
Login to my accountRegister

Synchronization of Neuronal Responses in Primary Visual Cortex of Monkeys Viewing Natural Images

Artículo
Thumbnail
Open/Download
Icon132034_C11_Maldonado_Grun_J_Neurophysiolgy_2008.pdf (659.5Kb)
Publication date
2008-09
Metadata
Show full item record
Cómo citar
Maldonado Arbogast, Pedro
Cómo citar
Synchronization of Neuronal Responses in Primary Visual Cortex of Monkeys Viewing Natural Images
.
Copiar
Cerrar

Author
  • Maldonado Arbogast, Pedro;
  • Babul Ayub, María Cecilia;
  • Singer, Wolf;
  • Rodríguez Silva, Eugenio;
  • Berger, Denise;
  • Grün, Sonja;
Abstract
When inspecting visual scenes, primates perform on average four saccadic eye movements per second, which implies that scene segmentation, feature binding, and identification of image components is accomplished in 200 ms. Thus individual neurons can contribute only a small number of discharges for these complex computations, suggesting that information is encoded not only in the discharge rate but also in the timing of action potentials. While monkeys inspected natural scenes we registered, with multielectrodes from primary visual cortex, the discharges of simultaneously recorded neurons. Relating these signals to eye movements revealed that discharge rates peaked around 90 ms after fixation onset and then decreased to near baseline levels within 200 ms. Unitary event analysis revealed that preceding this increase in firing there was an episode of enhanced response synchronization during which discharges of spatially distributed cells coincided within 5-ms windows significantly more often than predicted by the discharge rates. This episode started 30 ms after fixation onset and ended by the time discharge rates had reached their maximum. When the animals scanned a blank screen a small change in firing rate, but no excess synchronization, was observed. The short latency of the stimulation-related synchronization phenomena suggests a fast-acting mechanism for the coordination of spike timing that may contribute to the basic operations of scene segmentation.
Identifier
URI: https://repositorio.uchile.cl/handle/2250/128468
DOI: doi:10.1152/jn.00076.2008
Quote Item
J Neurophysiol • VOL 100 • SEPTEMBER 2008, pp. 1523–1532
Collections
  • Artículos de revistas
xmlui.footer.title
31 participating institutions
More than 73,000 publications
More than 110,000 topics
More than 75,000 authors
Published in the repository
  • How to publish
  • Definitions
  • Copyright
  • Frequent questions
Documents
  • Dating Guide
  • Thesis authorization
  • Document authorization
  • How to prepare a thesis (PDF)
Services
  • Digital library
  • Chilean academic journals portal
  • Latin American Repository Network
  • Latin American theses
  • Chilean theses
Dirección de Servicios de Información y Bibliotecas (SISIB)
Universidad de Chile

© 2020 DSpace
  • Access my account