English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Meeting Abstract

Low frequency oscillatory bursts in the macaque prefrontal cortex predict spontaneous transitions in the content of consciousness

MPS-Authors
/persons/resource/persons84459

Dwarakanath,  A
Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Dwarakanath, A. (2019). Low frequency oscillatory bursts in the macaque prefrontal cortex predict spontaneous transitions in the content of consciousness. Neuroforum, 25(Supplement 1): S9-6, 78.


Cite as: https://hdl.handle.net/21.11116/0000-0003-1F60-F
Abstract
In multistable perception, the content of consciousness alternates spontaneously between mutually exclusive or mixed interpretations of competing representations. Identifying neural signals predictive of such intrinsically driven perceptual transitions is fundamental in resolving the mechanism and localizing
the brain areas giving rise to visual consciousness. Here we employed a no-report paradigm of binocular motion rivalry based on the optokinetic nystagmus reflex read-out of spontaneous perceptual transitions coupled with multielectrode recordings of local field potentials and single neuron discharges in the macaque prefrontal cortex. We show that an increase of oscillatory bursts in the delta-theta (1-9 Hz), and a decrease in the beta (20-40 Hz) bands, along with significant perceptual modulation of single neurons during periods of dominance and perceptual switches, are predictive of spontaneous transitions in the
content of visual consciousness. These results suggest that the balance of stochastic prefrontal fluctuations is critical in refreshing conscious perception, casting doubt on a posterior cortical mechanism for visual awareness.