Medial dorsal thalamic unit activity preceded HCSs in the ACC. Ai, Coronal sections of the ACC and MT with the electrode tracks marked. Aii, CSD trace with high-amplitude sink in the ACC (top) and simultaneously recorded multiunit activity in the MT (bottom). Bi, HCSs in the ACC (yellow) could trigger spikes in the MD. Red vertical line indicates the peak of HCSs. Bii, Comparison of the latency between HCSs in the ACC and HCS-triggered spikes in the MT. C, Serial recording tracks in the ACC and MT. Colored dots represent the correlation between HCSs in the ACC and multiunit activity in the MT. MDL, Medial dorsal lateral thalamic nucleus; MDC, medial dorsal central thalamic nucleus; MDM, medial dorsal medial thalamic nucleus; PC, paracentral thalamic nucleus; VL, ventral lateral thalamic nucleus; M1, primary motor cortex; M2, secondary motor cortex; Cg1, cingulate cortex, area 1; PrL, prelimbic cortex; IL, infralimbic cortex.