Figure 2.

Block diagram of the proposed multimodality neuromonitoring system. (A) The proposed system is capable of simultaneously recording ECoG, brain oxygen tension, cortical temperature, and cerebral blood flow in awake tethered rats. (B) Detailed diagram of the interface circuits in the headstage. It contains circuits for 1-ch ECoG and 2-ch potentiostat, and electrical interfaces for high-level signals including cortical temperature and cerebral blood flow. RE, reference electrode; WE1, working electrode channel 1; WE2, working electrode channel 2; CE, counter electrode.