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Related Experiment Video

Updated: May 29, 2026

Examining Local Network Processing using Multi-contact Laminar Electrode Recording
13:40

Examining Local Network Processing using Multi-contact Laminar Electrode Recording

Published on: September 8, 2011

Examining local network processing using multi-contact laminar electrode recording.

Bryan J Hansen1, Sarah Eagleman, Valentin Dragoi

  • 1Graduate School of Biomedical Science, Neuroscience Program, University of Texas, USA.

Journal of Visualized Experiments : Jove
|September 21, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method using multi-contact laminar electrodes to record from individual neurons and local field potentials (LFPs) across all cortical layers. This technique precisely identifies cortical layers for detailed laminar circuit analysis in the primary visual cortex (V1).

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Multi-unit Recording Methods to Characterize Neural Activity in the Locust (Schistocerca Americana) Olfactory Circuits
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Related Experiment Videos

Last Updated: May 29, 2026

Examining Local Network Processing using Multi-contact Laminar Electrode Recording
13:40

Examining Local Network Processing using Multi-contact Laminar Electrode Recording

Published on: September 8, 2011

Multiscale Investigations of Cortical Processing by Integrating Laminar Polytrodes and Optogenetics with Micro Electrocorticography in Rodents
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Multi-unit Recording Methods to Characterize Neural Activity in the Locust (Schistocerca Americana) Olfactory Circuits
12:13

Multi-unit Recording Methods to Characterize Neural Activity in the Locust (Schistocerca Americana) Olfactory Circuits

Published on: January 25, 2013

Area of Science:

  • Neuroscience
  • Computational Neuroscience

Background:

  • Cortical layers in the neocortex feature recurrent local networks.
  • Understanding laminar-specific neuronal population encoding remains a challenge.
  • Current multi-electrode array techniques are limited for laminar circuit analysis.

Purpose of the Study:

  • To present a novel method for recording individual neurons and LFPs across cortical layers.
  • To enable detailed investigation of laminar-specific information processing.
  • To overcome limitations of existing techniques for laminar circuit studies.

Main Methods:

  • Utilized multi-contact laminar electrodes (Plextrode U-Probe).
  • Developed techniques for recording device construction and receptive field identification.
  • Employed evoked response potentials (ERPs) and current-source density (CSD) analysis for precise cortical layer identification.

Main Results:

  • Successfully recorded individual neurons and LFPs across cortical layers in primary visual cortex (V1).
  • Accurately identified cortical layers using ERPs and CSD analysis, pinpointing layer 4.
  • CSD analysis provided insights into transmembrane current flow for electrode positioning.

Conclusions:

  • The presented method allows for accurate laminar positioning of electrodes.
  • This technique facilitates the study of neuronal encoding in a laminar-specific manner.
  • Enables detailed analysis of local cortical circuits across all layers.