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Little is known about how different modalities of spinal cord stimulation (SCS) suppress pain
The article was published in Neuromodulation: Technology at the Neural Interface
Data were collected from samples of four chronic pain patients who received cervical or thoracic epidural spinal cord stimulation for neuropathic pain due to peripheral and spinal cord injury
Blood vessel
Analysis of the neuromodulation effect of SCS on brain oscillations
Electroencephalograms (EEGs) were recorded from 61 standard scalp locations using a Brainamp recording system (Brain Products GmbH, Germany) with electrodes AFz grounded and FCz referenced
It is important to note that the analysis is not for detailed differences between specific mode parameters, but for general differences between modes
We used the maximum possible sampling rate of 5000 Hz for EEG recordings to reduce distortion caused by SCS artifacts
Spatial Filters for Artifact Attenuation (SFA) and Response Enhancement (SFR)
In EEG regions responsive to SCS, neuromodulation greatly reduced activity in theta and low alpha range (6-10 Hz) in all SCS modalities
Although SCS has been a clinically effective treatment for neuropathic pain for decades, its mechanism of action, especially its effect on supraspinal neuronal processing, is still not fully understood
They may arise from hidden artifact sources unrelated to our artifact signals, or by SCS-evoked brain reaction times and phase-locking to the SCS cycle, but not entirely related to the SCS artifact itself
Buentjen, L.
Buentjen, L.
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