Fig. 3

Intrapallidal inhibition of GAT-1 decreases the power spectra in the beta frequency band. A Power spectrum showing the effect of intrapallidal inhibition of GAT-1 in the 13 to 30 Hz frequency. B Statistics the effect of tiagabine applied in the ipsilateral globus pallidus on low (13–19 Hz; p < 0.012; paired Student´s t-test; n = 10 neurons) and high beta band (20–30 Hz; p < 0.027; paired Student´s t-test; n = 10 neurons). C Plot showing significantly coherent activity between motor cortex and RTn at frequencies associated with the beta activity. Dashed lines are 95% confidence intervals. D Graph showing coherence values of tiagabine at frequencies associated with the low and high beta activity