Figure 1.

Single-segment, time-frequency analysis of spectral power changes in (A) MC- and (B) SMA-EEG related to single-cell spiking in the STN. These time-frequency maps are based on data pooled from all STN cells recorded in the normal state (n = 39 neurons) or in the parkinsonian state (n = 36). The data were normalized to the whole-segment baseline power (100%) and then averaged for each frequency across all available segments and cells. The x-axis shows time in milliseconds, the y-axis frequency in Hertz. Power values are color coded: green colors represent the whole-segment baseline, warmer colors indicate increases in spectral power, and cooler colors indicate decreases in spectral power. Time 0 is the onset of the chosen ISIs.