Electrophysiological correlates to the intrinsic optical signal in the rat neocortical slice.

Journal Article (Journal Article)

The study sought to further our understanding of the correlation between electrophysiological activity and the intrinsic optical signal (IOS) in neocortical slice by combining imaging of IOS with whole-cell and extracellular electrical recording. Columnar-shaped areas of IOS were evoked with electrical stimulation of the layer VI/white matter border. The distribution of IOS intensities linearly correlated with the distribution of evoked excitatory post-synaptic potential amplitudes (R=0.89). The distribution of field potentials was narrower than the distribution of IOS intensities with significantly smaller amplitude of the normalized field potentials in the edge of the column. The data suggest that in the neocortical slice the IOS at the edge of the evoked column reflects primarily the sub-threshold excitatory synaptic activity.

Full Text

Duke Authors

Cited Authors

  • Cerne, R; Haglund, MM

Published Date

  • January 14, 2002

Published In

Volume / Issue

  • 317 / 3

Start / End Page

  • 147 - 150

PubMed ID

  • 11755261

International Standard Serial Number (ISSN)

  • 0304-3940

Digital Object Identifier (DOI)

  • 10.1016/s0304-3940(01)02453-3


  • eng

Conference Location

  • Ireland