Figure 6.

Response of a pallidal neuron to internal capsule (IC) stimulation. (A) Six overlaid traces of neuronal activity show that the neuron often fires around 6–8 ms post-stimulation. The arrowhead points to a neuronal spike occurring along with the stimulation artefact. The neuronal spike was successfully recognized after processing the data with a stimulus artefact removal algorithm. (B) Peri-stimulus histogram depicting the firing rate of the neuron during the first 20 ms post-stimulation shows an early excitation response (red) to internal capsule stimulation. Peri-stimulus histogram generated from 100 randomly spaced consecutive stimuli (bin size = 1 ms), as described in the ‘Materials and methods’ section. The neuronal traces (A) and peri-stimulus histograms (B) are aligned to identical time axes.