In this recent study titled “Feature selectivity and invariance in marsupial primary visual cortex”, led by Young Jun Jung and Michael R. Ibbotson, researchers used NeuroNexus 32-channel multi-electrode arrays to conduct extracellular recordings in the primary visual cortex of marsupials.
They employed two types of microlelectrode arrays: a single-shank probe with 32 sites spaced at 100 μm intervals along the lower 3.2 mm, and a four-shank probe with 8 sites per shank, also spaced at 100 μm intervals along the lower 0.8 mm. These probes were vertically inserted into the cortex to capture neural activity across different cortical layers, enabling the team to analyze receptive field properties and assess feature selectivity and invariance in the visual processing of these animals.
