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Gamma (40-100 Hz) oscillation in the hippocampus of the behaving rat
It is suggested that gamma oscillation emerges from an interaction between intrinsic oscillatory properties of interneurons and the network properties of the dentate gyrus and that Gamma oscillation in the CA3-CA1 circuitry is suppressed by either the hilar region or the entorhinal cortex.
High-frequency network oscillation in the hippocampus.
Simultaneous, multisite recordings revealed temporal and spatial coherence of neuronal activity during population oscillations in CA1 hippocampal region and synchronous output of cooperating CA1 pyramidal cells may serve to induce synaptic enhancement in target structures of the hippocampus.
Wireless implantable microsystems: high-density electronic interfaces to the nervous system
This paper describes the development of a high-density electronic interface to the central nervous system that permits the long-term monitoring of neural activity in vivo as well as the insertion of electronic signals into neural networks at the cellular level.
Polytrodes: high-density silicon electrode arrays for large-scale multiunit recording.
A variety of 54-channel high-density silicon electrode arrays (polytrodes) designed to record from large numbers of neurons spanning millimeters of brain, which have negligible channel crosstalk, comparable reliability, and low site impedances and are capable of making high-fidelity multiunit recordings with minimal tissue damage.
Surface modification of neural recording electrodes with conducting polymer/biomolecule blends.
  • X. Cui, V. Lee, +4 authors D. Martin
  • Materials Science, Medicine
    Journal of biomedical materials research
  • 1 August 2001
The results indicate that the chemical composition, morphology, electronic transport, and bioactivity of polymer coatings on electrode surfaces on a multichannel micromachined neural probe can be adjusted by controlling electrochemical deposition conditions.
Electrochemical deposition and characterization of conducting polymer polypyrrole/PSS on multichannel neural probes
Abstract The conducting polymer polypyrrole (PPy) doped with polystyrene sulfonate (PSS) was electrochemically deposited onto the electrode sites of micromachined neural probes. The surface
Chronic neural recording using silicon-substrate microelectrode arrays implanted in cerebral cortex
The results of this study demonstrate that these planar silicon probes are suitable for long-term recording in the cerebral cortex and provide an effective platform technology foundation for microscale intracortical neural interfaces for use in humans.
Silicon-substrate intracortical microelectrode arrays for long-term recording of neuronal spike activity in cerebral cortex
This study investigated the use of planar, silicon-substrate microelectrodes for chronic unit recording in the cerebral cortex and provided a performance baseline to support further electrode system development for intracortical neural implant systems for medical applications.
Batch fabricated thin-film electrodes for stimulation of the central auditory system
In vivo tests were performed in the central auditory pathways to demonstrate neural activation using the iridium stimulating arrays to show a selective activation both as a function of site separation and site size.
Strength characterization of silicon microprobes in neurophysiological tissues
  • K. Najafi, J. Hetke
  • Materials Science, Medicine
    IEEE Transactions on Biomedical Engineering
  • 1 May 1990
It is shown that by proper selection of the substrate length, width, and thickness, silicon substrates can be designed and used to penetrate a variety of biological tissues without breakage or excessive dimpling.