Los códigos neurales de la percepción conciente y la memoria de trabajo
Abstract
ResumenÂ
La Memoria de Trabajo (MT) y la cognición conciente constituyen funciones neurocognitivas Ãntimamente relacionadas. Si el procesamiento conciente interactúa con la información almacenada y disponible en la MT, y si el acceso a la conciencia es una condición necesaria para que cierta información sea capaz de ser retenida en la MT, entonces ciertos correlatos, mecanismos y códigos neurales podrÃan ser compartidos. En el presente artÃculo de revisión y opinión se examina de manera particular el rol en la percepción conciente y en la MT de una actividad distribuida en una red cortical fronto-parietal y la actividad oscilatoria sincronizada de poblaciones neuronales en diferentes bandas de frecuencia y en diferentes escalas espaciales. Si bien el acceso conciente y las primeras fases de codificación de información comparten parte de sus códigos neurales, la retención de información en la MT en un estado particular podrÃa involucrar códigos adicionales. Al final del artÃculo se sugiere que un código neural de fase, el código theta-gamma, podrÃa ser el mecanismo implementado por un espacio de trabajo neuronal global para codificar contenidos concientes y retener información en la MT.
Palabras clave:Â acceso conciente; procesamiento conciente; memoria de trabajo; control cognitivo; sincronÃa; correlatos neurales.
Â
Abstract
Working Memory (WM) and conscious cognition are intimately related neurocognitive functions. If conscious processing interacts with the information stored and available in WM, and if access to consciousness is a necessary condition for certain information to be able to be retained in WM, then certain correlates, mechanisms and neural codes could be shared. In this review and opinion article, the role in conscious perception and WM of a distributed activity in a fronto-parietal cortical network and the synchronized oscillatory activity of neuronal populations in different frequency bands and at different spatial scales is examined. Although conscious access and the first phases of information encoding share part of their neural codes, the retention of information in WM in a particular state could involve additional codes. At the end of the article it is suggested that a neural phase code, the theta-gamma code, could be the mechanism implemented by a global neuronal workspace to encode conscious contents and retain information in WM.
Key Words:Â conscious access; conscious processing; working memory; synchrony; cognitive control; neural correlates
Â
Resumo
A Memória de Trabalho (MT) e a cognição consciente constituem funções neurocognitivas intimamente relacionadas. Se o processamento consciente interage com a informação armazenada e disponÃvel na MT, e se o acesso à consciência é uma condição necessária para que certa informação seja capaz de ser retida na MT, então certos correlatos, mecanismos e códigos neurais poderiam ser compartilhados. No presente artigo de revisão e opinião se examina de maneira particular o rol na percepção consciente e na MT de uma atividade distribuÃda numa rede cortical fronto-parietal e a atividade oscilatória sincronizada de populações neuronais em diferentes bandas de frequência e em diferentes escalas espaciais. Se bino acesso consciente e as primeiras fases de codificação de informação compartilham parte de seus códigos neurais, a retenção de informação na MT num estado particular poderia envolver códigos adicionais. No final do artigo sugere-se que um código neural de fase, o código theta-gamma, poderia ser o mecanismo implementado por um espaço de trabalho neuronal global para codificar conteúdos conscientes e reter informação na MT.
Palavras-chave: acesso consciente; processamento consciente; memória de trabalho; controle cognitivo; sincronia; correlatos neurais.
Downloads
How to Cite
Issue
Section
License
Articles published in this journal are protected under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) license. This means that authors retain full rights over their research and publications at all times. As a journal, we fully respect and promote the principles of open access established by this license, allowing the work to be shared, adapted, and distributed for non-commercial purposes, provided that appropriate credit is given to the authors and any derivative works are licensed under the same terms.
Authors are responsible for obtaining the required permission when they wish to reproduce part of the material (figures, etc.) from other publications.
Likewise, CNPs allows authors to host in their personal sites or other repositories that they deem convenient the Final and Definitive Version of the published article with the format assigned by the journal. In no case do we allow access to preprints of the article under evaluation or already published.
When submitting an article to CNPs you are aware that all the contents of CNPs are under a Creative Commons License. In which it is allowed to copy and share the contents freely, always making reference to the origin of the publication and its author.
