EUROSENSORS 2014, the XXVIII edition of the conference series Optrode for multimodal deep -brain infrared stimulation

In recent years, optical stimulation in neuroscience has emerge d as an alternative to electrical stimulation. In this work, we present the concept and optical simulation of an optrode capable of delivering focused infrared light to brain tissue, while simultaneously recording electrical signals from the surrounding area. The system combines the advantages of silicon microfabrication and silicon’s transparency in the near-infrared . For efficient coupling into the probe and controlling the illuminated volu me in the brain, silicon microlenses w ere simulated using MATLAB. The lens system can focus light in 2-D, with configurable focal length and spot size. © 2014 The Authors. Published by Elsevier Ltd. Peer -review under responsibility of the scientific committee of Euros ensors 2014 .