Feedback stabilizes propagation of synchronous spiking in cortical neural networks
Abstract
Feedback projections are ubiquitous in the brain, but little is known about what they contribute to information processing. The results presented here provide testable hypotheses for the functional role of the feedback projections in the brain. Our work suggests that feedback projections could be responsible for information encoded in spike times to reliably propagate through cortex, and thus could serve as an attentional mechanism to regulate the flow of information in the cortex. Our work also suggests that feedback projections may also be critically involved in organizing neural populations involved in cognitive functions by generating and sharpening spike-time synchronization among populations of neurons. Thus, feedback projections could be key to understanding how the cortex is globally organized.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 09, 2015
- Source ID
- 10.1073/pnas.1500643112
Entities
People
- Maxim Bazhenov
- Samat Moldakarimov
- Terrence J. Sejnowski
Organizations
- Howard Hughes Medical Institute
- National Institute of Neurological Disorders and Stroke
- Office of Naval Research
- University of California
- University of California, San Diego