linear-array multicontact electrode that had 24 contacts with a spacing of 150 µm  (plexon inc)

Journal: Frontiers in neuroscience

Article Title: Mirror Neurons in a New World Monkey, Common Marmoset.

doi: 10.3389/fnins.2015.00459

Figure Lengend Snippet: FIGURE 2 | Electrophysiological mapping of STS under anesthetic condition. (A) Cortical surface around STS of a common marmoset. Four green dots indicate the penetration sites of four shanks of a linear array multicontact electrode. The red line indicates the presumed cortical surface because only 4–5 bottom contacts of each shank were inserted. The yellow dotted line indicates STS. (B) Multiunit responses to the sight of grasping action of another marmoset, which were arranged by channel configuration. Rasters and peristimulus time histograms were aligned to the stimulus onset at time = 0. The bin width for the peristimulus time histogram was 20 ms. To minimize damage to the cortex caused by the electrode penetration, multiunits were recorded only from channels on the upper part of each shank. The multiunits on the bottom two channels on the second shank strongly responded to the movie. (C) Multiunit responses to the sight of human grasping action, which were arranged by channel configuration. As in (B), the multiunits on the bottom two channels on the second shank strongly responded to the movie.

Article Snippet: Two micromanipulators were used to lower linear array multicontact electrodes (Neuronexus, Ann Arbor, MI, US) vertically perpendicular to the cortical surface in the STS injection site and in the labeled spots in the lateral frontal cortex for the chronic experiment.

Techniques: