What Language is Spoken Here? Conversations Between Neurons in Primate Visual Cortex

  • Vivien A. Casagrande
  • Xin Chen
  • Walter J. Jermakowicz
Conference paper

Abstract

In this review we summarize results of our recent studies examining the role of spike timing between cells across early primate visual areas. Using methods that allowed us to examine spike timing between both pairs and larger groups of neurons we provide evidence that spike timing may be an important mechanism for propagating feed forward signals between the primary, secondary and tertiary cortical visual areas and that the propagation of this form of local cooperativity in the network is supported by oscillatory activity in the gamma frequency range.

Keywords

Synchrony coding vision primate scillations 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Jermakowicz, W.J., Casagrande, V.A.: Neuronal Networks a Century After Cajal in A Century of Neuroscience Discovery: Reflecting on the 1906 Nobel Prizes to Golgi and Cajal in Brain Research Reviews (L. Swanson, ed.), Elsevier, in press. (2007).Google Scholar
  2. 2.
    Shadlen, M.N., Movshon, J.A.: Synchrony unbound: a critical evaluation of the temporal binding hypothesis. Neuron 24 (1999) 67–25.PubMedCrossRefGoogle Scholar
  3. 3.
    Singer, W., Gray, C.M. Visual feature integration and the temporal correlation hypothesis. Annu. Rev. Neurosci. 18 (1995) 555–586.3.Google Scholar
  4. 4.
    Usrey, W.M., Reid, R.C.: Synchronous activity in the visual system. Annu. Rev. Physiol. 61 (1999) 435–456.PubMedCrossRefGoogle Scholar
  5. 5.
    Samonds, J.M., Zhou, Z., Bernard, M.R., Bonds, A.B.: Synchronous activity in cat visual cortex encodes collinear and cocircular contours. J. Neurophysiol. 95 (2006) 2602–2616.PubMedCrossRefGoogle Scholar
  6. 6.
    Aertsen, A.M., Gerstein, G.L., Habib, M.K., Palm, G.: Dynamics of neuronal firing correlation: modulation of “effective connectivity”. J. Neurophysiol. 61 (1989) 900–917.PubMedGoogle Scholar
  7. 7.
    Jermakowicz, W.J., Chen, X., Khaytin, I., Zhou, Z., Bernard, M., Bonds, A.B., Casagrande, V.A.: Is local neuronal synchrony better at discriminating stimulus spatial frequency in primary visual cortex (V1) than firing rate? Society for Neuroscience (2006) Program No. 734.12/J14.Google Scholar
  8. 8.
    Jermakowicz, W.J., Chen, X., Purushothaman, G., Khaytin, I., Madison, C., Bonds, A.B., Casagrande, V.A.: Synchronous spikes are readily propagated between the early cortical visual areas. Submitted (2007).Google Scholar
  9. 9.
    Jermakowicz, W.J., Chen, X., Khaytin, I., Zhou, Z., Bernard, M., Bonds, A.B., Casagrande, V.A.: Is synchrony a reasonable coding strategy for visual areas beyond V1 in primates? J. Vision 7 (2007) 325.CrossRefGoogle Scholar
  10. 10.
    Azouz R.: Dynamic spatiotemporal synaptic integration in cortical neurons: neuronal gain, revisited. J. Neurophysiol. 94 (2005) 2785–2796.PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Vivien A. Casagrande
    • 1
  • Xin Chen
  • Walter J. Jermakowicz
  1. 1.Departments of & Developmental BiologyPsychology, Ophthalmology & Visual Sciences Vanderbilt Medical SchoolUSA

Personalised recommendations