Stimulus encoding within the barn owl optic tectum using gamma oscillations vs. spike rate: a modeling approach.

Journal Article (Journal Article)

The optic tectum of the barn owl is a multimodal structure with multiple layers, with each layer topographically organized according to spatial receptive field. The response of a site to a stimulus can be measured as either spike rate or local field potential (LFP) gamma (25-90 Hz) power; within superficial layers, spike rate and gamma power spatial tuning curves are narrow and contrast-response functions rise slowly. Within deeper layers, however, spike rate tuning curves broaden and gamma power contrast-response functions sharpen. In this work, we employ a computational model to describe the inputs required to generate these transformations from superficial to deep layers and show that gamma power and spike rate can act as parallel information processing streams.

Full Text

Duke Authors

Cited Authors

  • Patel, M; Reed, M

Published Date

  • January 2013

Published In

Volume / Issue

  • 24 / 2

Start / End Page

  • 52 - 74

PubMed ID

  • 23406211

Electronic International Standard Serial Number (EISSN)

  • 1361-6536

International Standard Serial Number (ISSN)

  • 0954-898X

Digital Object Identifier (DOI)

  • 10.3109/0954898x.2013.763405


  • eng