Abstract
Local field potentials (LFPs) are signals generated primarily by the result of the synchronous discharge of post-synaptic potentials. Detection of LFPs from intracranial electrodes sited within the basal ganglia has led to the recognition that there are specific features of the LFP that could serve as neurophysiological biomarkers of different disease states. For example, in Parkinson’s disease peaks in the beta frequency range of the power spectrum are known to correlate with the degree of bradykinesia and rigidity, whereas low frequency, alpha-theta peaks are increasingly considered a biomarker of dystonic activity. The introduction of newer deep brain stimulation (DBS) devices capable of simultaneous stimulation and LFP detection creates opportunities to investigate new strategies for treating patients with dystonia. This review aims to summarise the LFP findings seen in patients with dystonia undergoing DBS with a particular focus on the potential implications for future clinical practice and the development of adaptive DBS systems.
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