Dynamic cross-frequency couplings of local field potential oscillations in rat striatum and hippocampus during performance of a T-maze task

Oscillatory rhythms in different frequency ranges mark different behavioral states and are thought to provide distinct temporal windows that coherently bind cooperating neuronal assemblies. However, the rhythms in different bands can also interact with each other, suggesting the possibility of higher-order representations of brain states by such rhythmic activity. To explore this possibility, we analyzed local field potential oscillations recorded simultaneously from the striatum and the hippocampus. As rats performed a task requiring active navigation and decision making, the amplitudes of multiple high-frequency oscillations were dynamically modulated in task-dependent patterns by the phase of cooccurring…

• NS
  National Science Foundation
• BW
  Burroughs Wellcome Fund
• CD
  Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
• NI
  National Institutes of Health
• MI
  McGovern Institute for Brain Research, Massachusetts Institute of Technology
• OO
  Office of Naval Research

  Awards: N00014-04-1-0208, N00014