Fig. 4From: Telemetry-controlled simultaneous stimulation-and-recording device (SRD) to study interhemispheric cortical circuits in rat primary somatosensory (SI) cortexa Cortico-cortical evoked response to ICMS delivered to the wrist representation at 8 days post-implantation. b Photograph of rat wearing the SRD system. The SRD was fixed to the vest with Velcro and connected to the electrode interface board (EIB) on the headstage using a wire interconnect. Cortico-cortical evoked responses to ICMS delivered to the wrist representation at 8 days post-implantation are shown in (c). Each of the six rows of traces represents cortico-cortical evoked responses seen during two 60-min sessions of chronic ICMS (100 μA). Each plot shows 10 traces. Triangle (▲) indicates location of stimulus artifact which was removed after data was transmitted to the host PC. Artifact was replaced with a value of zero if rectified trace sample was greater than the maximum rectified amplitude of the post-stimulus evoked response. d Mean peak-to-peak signal amplitudes for each time point in (b) are shown with error bars representing one standard deviation. e Mean instantaneous RMS peaks for each time point in (b) are shown with error bars representing one standard deviationBack to article page