Essential tremor and tremor in Parkinson's disease are associated with distinct 'tremor clusters' in the ventral thalamus

► Simultaneous EMG and LFP-activity was analyzed in the motor thalamus for coherence. ► Two different tremor entities were taken into consideration (ET and PD). ► Individual spatial distribution of coherence exists within the motor thalamus. ► 'Tremor clusters' exist in different subcortical areas for tremulous patients. ► ET and PD show distinct tremor-related coherence between VLp and tremulous muscles.