Online ISSN: 2515-8260

Keywords : micro electrodes


Computer Analysis of Local Field Potentials of MER Data with STN Deep Brain Stimulation in Parkinson`s Disease

Anji Reddy Dabbeta; Narsimha G; Venkateshwarla Rama Raju

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 1, Pages 2405-2414

The local field potentials, i.e., the electrical-potentials of the deep brain stimulations (DBS) and micro electrode signal recordings of STN-neurons adjoining and contiguous DBS leads can vivid to give pragmatic rejoinder or snap therapeutic-surgical STN-DBS. Nevertheless, predictable square (conservative) DBS lead-electrodes amid four cylindrical macro/electrodes (for macrostimulations) likely under-sample the spatial circulation of sinks and sources in a given area of the brain. This study gives the exploration of the power-spectral-density (PSD) and spatial-feature dimensions of LFP-activity in primate subthalamic-nuclei (STN/or s-nuclei) and globus pallidus internus (GPi) by means of unendingly 32embedded-channel directional DBS-array-electrodes. The waveforms of s-nuclei and GPi were acquired as of directional-DBS-micro electrode-arrays in the latent or quiescent state and in a reach-and-retrieval task in two-primates in adolescent, naïve and immature (raw) animal Parkinson conditions. The potentials of signal acquisitions recordings were evaluated amongst bipolar-pairs of micro electrodes using personage and agglomerative (bunched) electrode configurations, with the latter mimicking the cylindrical macro electrode (for macro stimulations) arrangements/specifications employed in the present - current clinical settings of field-potentials signal acquisition. Signal recordings from these DBS-electrodes shown that, β-oscillatory frequency fluctuations have spatial-finger-prints in s-nuclei and GPi, and that these fluctuations were muted when clustering the electrode contacts together to create cylindrical macro electrodes alike in parallel and in