English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Neural mechanisms of conscious visual perception in the prefrontal cortex: From single units to correlations and spatiotemporal patterns

Panagiotaropoulos, T. I. (2014). Neural mechanisms of conscious visual perception in the prefrontal cortex: From single units to correlations and spatiotemporal patterns. Talk presented at Newcastle University: Extra IoN Seminar. Newcastle, UK.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0001-3412-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-39FF-1
Genre: Talk

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Panagiotaropoulos, Theofanis I1, 2, Author              
Affiliations:
1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

Content

show
hide
Free keywords: -
 Abstract: Until recently the temporal cortex was the only known area where neuronal discharges during subjective visual perception closely matched the respective activity during perception without a subjective component, indicating a robust representation of the content of visual awareness. However, it was not clear whether conscious perception should be uniquely localized in the temporal association cortex. We focused on the next level of the ventral visual stream, the ventrolateral prefrontal cortex (PFC), and found single units that also represent reliably conscious content, suggesting a frontotemporal cortical workspace of conscious access. We also studied whether emergent properties of functional connectivity patterns like the structure of interneuronal firing correlations in the PFC could constrain the population coding accuracy and found a non-detrimental correlation structure during subjective perception. These empirical findings are used to constrain biophysically realistic models in an effort to pin down the dynamic mechanisms of perceptual stability and spontaneous perceptual transitions. The latter could be ascribed to spontaneous fluctuations of intrinsic activity that induce perceptual reorganization. In order to gain a preliminary understanding of these fluctuations in the PFC we used multielectrode (Utah array) recordings and mapped the dynamic spatiotemporal structure of oscillatory activity revealing a dominant travelling wave pattern in the beta (15-30Hz) frequency band.

Details

show
hide
Language(s):
 Dates: 2014-04-09
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: BibTex Citekey: Panagiotaropoulos2014_2
 Degree: -

Event

show
hide
Title: Newcastle University: Extra IoN Seminar
Place of Event: Newcastle, UK
Start-/End Date: -
Invited: Yes

Legal Case

show

Project information

show

Source

show