Figure 4.

Photographs and data from murine validation experiments. a) The anatomy and locations of the stretchable neural electrode arrays relative to the visual cortex. Schematic illustration of nine channels of stretchable neural electrode array, four channels of stainless‐steel screw electrode, and one channel of reference electrode. b) Images of electrode array after connection with heat seal connector. c) Photograph of a nine‐channel stretchable neural electrode array placed on the visual cortical surface of the left hemisphere of a rat. d) Representative ECoG signals recorded by the stretchable neural electrode array with a 467 µm thick PDMS substrate (channels 1–9) and stainless‐steel screw electrodes (channels 10–13). e) Representative ECoG signals recorded by stretchable neural electrode array with a 50 µm thick PDMS substrate (channels 1–9) and stainless‐steel screw electrodes (channels 10–13).