Overcoming Long-Term Variability in Local Field Potentials Using an Adaptive Decoder

2017 ◽  
Vol 64 (2) ◽  
pp. 319-328 ◽  
Keyword(s):  
Local Field ◽  
Local Field Potentials ◽  
Field Potentials

scholarly journals Long-Term Task- and Dopamine-Dependent Dynamics of Subthalamic Local Field Potentials in Parkinson’s Disease

2016 ◽  
Vol 6 (4) ◽  
pp. 57 ◽  
Author(s):  
Sara Hanrahan ◽  
Joshua Nedrud ◽  
Bradley Davidson ◽  
Sierra Farris ◽  
Monique Giroux ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Local Field ◽  
Local Field Potentials ◽  
Field Potentials

Long-term decoding stability of local field potentials from silicon arrays in primate motor cortex during a 2D center out task

2014 ◽  
Vol 11 (3) ◽  
pp. 036009 ◽  
Author(s):  
Dong Wang ◽  
Qiaosheng Zhang ◽  
Yue Li ◽  
Yiwen Wang ◽  
Junming Zhu ◽  
...  
Keyword(s):  
Motor Cortex ◽  
Local Field ◽  
Local Field Potentials ◽  
Field Potentials ◽  
Silicon Arrays

scholarly journals Long-term recording performance and biocompatibility of chronically implanted cylindrically-shaped, polymer-based neural interfaces

2018 ◽  
Vol 63 (3) ◽  
pp. 301-315 ◽  
Author(s):  
Richárd Fiáth ◽  
Katharina T. Hofer ◽  
Vivien Csikós ◽  
Domonkos Horváth ◽  
Tibor Nánási ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Local Field ◽  
Unit Activity ◽  
Single Unit ◽  
Local Field Potentials ◽  
Field Potential ◽  
Tissue Reaction ◽  
Field Potentials ◽  
Depth Electrodes

Abstract Stereo-electroencephalography depth electrodes, regularly implanted into drug-resistant patients with focal epilepsy to localize the epileptic focus, have a low channel count (6–12 macro- or microelectrodes), limited spatial resolution (0.5–1 cm) and large contact area of the recording sites (~mm2). Thus, they are not suited for high-density local field potential and multiunit recordings. In this paper, we evaluated the long-term electrophysiological recording performance and histocompatibility of a neural interface consisting of 32 microelectrodes providing a physical shape similar to clinical devices. The cylindrically-shaped depth probes made of polyimide (PI) were chronically implanted for 13 weeks into the brain of rats, while cortical or thalamic activity (local field potentials, single-unit and multi-unit activity) was recorded regularly to monitor the temporal change of several features of the electrophysiological performance. To examine the tissue reaction around the probe, neuron-selective and astroglia-selective immunostaining methods were applied. Stable single-unit and multi-unit activity were recorded for several weeks with the implanted depth probes and a weak or moderate tissue reaction was found around the probe track. Our data on biocompatibility presented here and in vivo experiments in non-human primates provide a strong indication that this type of neural probe can be applied in stereo-electroencephalography recordings of up to 2 weeks in humans targeting the localization of epileptic foci providing an increased spatial resolution and the ability to monitor local field potentials and neuronal spiking activity.

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