Figure 9
From: A biopotential optrode array: operation principles and simulations

Simulated spatial performance of a 169 channel optrode device. Cross-sectional view of the optrode array at different time points relative to the endpoint of the electrical current pulse used to excite the leftmost segment of the neuron. The extracellular potential at the neuron, V e , is overlaid on the electric polarisation of the liquid crystal in the direction perpendicular to the plane of sensing, P Gz . The neuron diameter is not drawn to scale.